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Thursday, May 15, 2025

Cyborg

From Wikipedia, the free encyclopedia
Artist's illustration of a cyborg

A cyborg (/ˈsbɔːrɡ/, a portmanteau of cybernetic and organism) is a being with both organic and biomechatronic body parts. The term was coined in 1960 by Manfred Clynes and Nathan S. Kline. In contrast to biorobots and androids, the term cyborg applies to a living organism that has restored function or enhanced abilities due to the integration of some artificial component or technology that relies on feedback.

Description and definition

Alternative names for a cyborg include cybernetic organism, cyber-organism, cyber-organic being, cybernetically enhanced organism, cybernetically augmented organism, technorganic being, techno-organic being, and techno-organism.

Unlike bionics, biorobotics, or androids, a cyborg is an organism that has restored function or, especially, enhanced abilities due to the integration of some artificial component or technology that relies on some sort of feedback, for example: prostheses, artificial organs, implants or, in some cases, wearable technology. Cyborg technologies may enable or support collective intelligence. A related idea is the "augmented human". While cyborgs are commonly thought of as mammals, including humans, the term can apply to any organism.

Placement and distinctions

D. S. Halacy's Cyborg: Evolution of the Superman (1965) featured an introduction which spoke of a "new frontier" that was "not merely space, but more profoundly the relationship between 'inner space' to 'outer space' – a bridge...between mind and matter."

In "A Cyborg Manifesto", Donna Haraway rejects the notion of rigid boundaries between humanity and technology, arguing that, as humans depend on more technology over time, humanity and technology have become too interwoven to draw lines between them. She believes that since we have allowed and created machines and technology to be so advanced, there should be no reason to fear what we have created, and cyborgs should be embraced because they are part of human identities. However, Haraway has also expressed concern over the contradictions of scientific objectivity and the ethics of technological evolution, and has argued that "There are political consequences to scientific accounts of the world."

Biosocial definition

According to some definitions of the term, the physical attachments that humans have with even the most basic technologies have already made them cyborgs. In a typical example, a human with an artificial cardiac pacemaker or implantable cardioverter-defibrillator would be considered a cyborg, since these devices measure voltage potentials in the body, perform signal processing, and can deliver electrical stimuli, using a synthetic feedback mechanism to keep that person alive. Implants, especially cochlear implants, that combine mechanical modification with any kind of feedback response are also cybernetic enhancements. Some theorists cite such modifications as contact lenses, hearing aids, smartphones, or intraocular lenses as examples of fitting humans with technology to enhance their biological capabilities.

The emerging trend of implanting microchips inside the body (mainly the hands), to make financial operations like a contactless payment, or basic tasks like opening a door, has been erroneously marketed as more recent examples of cybernetic enhancement. The latter has not yet seen significant traction outside niche areas in Scandinavia and in actual function is little more than a pre-programmed Radio-frequency identification (RFID) microchip encased in glass that does not interact with the human body (it is the same technology used in the microchips injected into animals for ease of identification), thus not fitting the definition of a cybernetic implant.

As cyborgs currently are on the rise, some theorists argue there is a need to develop new definitions of aging. For instance, a bio-techno-social definition of aging has been suggested.

The term is also used to address human-technology mixtures in the abstract. This includes not only commonly-used pieces of technology such as phones, computers, the Internet, and so on, but also artifacts that are not usually considered technology; for example, pen and paper, and speech and language. When augmented with these technologies and connected in communication with people in other times and places, a person becomes capable of more than they were before. An example is a computer, which gains power by using Internet protocols to connect with other computers. Another example is a social-media bot—either a bot-assisted human or a human-assisted-bot—used to target social media with likes and shares. Cybernetic technologies thus include highways, pipes, electrical wiring, buildings, electrical plants, libraries, and other infrastructural constructs.

Bruce Sterling, in his Shaper/Mechanist universe, suggested an idea of an alternative cyborg called 'Lobster', which is made not by using internal implants, but by using an external shell (e.g. a powered exoskeleton). Unlike human cyborgs, who appear human externally but are synthetic internally (e.g., the Bishop type in the Alien franchise), Lobster looks inhuman externally but contains a human internally (such as in Elysium and RoboCop). The computer game Deus Ex: Invisible War prominently features cyborgs called Omar, Russian for 'lobster'.

Evolutionary perspective

In 1994, Hans Hass formulated a scientific view of the human-machine hybrids he called "hypercells". They can expand their biological cell body with artificial artifacts and thus expand their performance body. The theory of hypercells or "Homo proteus", as Hass called the human-machine hybrid to distinguish Homo sapiens, extends Charles Darwin's theory of evolution and deals with the course of evolution beyond humans.

In his 2019 book Novacene, James Lovelock used the term "cyborgs" to refer to the next generation of beings who will become the "understanders of the future" and "lead the cosmos to self-knowledge". While acknowledging the organic component in Clynes' and Kline's definition, he proposed that these cyborgs "will have designed and built themselves from the artificial intelligence systems we have already constructed", and used the term cyborg "to emphasize that the new intelligent beings will have arisen, like us, from Darwinian evolution."

Origins

Engraving by an unknown author depicting a man-machine hybrid, 1569

The concept of a man-machine mixture was widespread in science fiction before World War II. As early as 1843, Edgar Allan Poe described a man with extensive prostheses in the short story "The Man That Was Used Up". In 1911, Jean de La Hire introduced the Nyctalope, a science fiction hero who was perhaps the first literary cyborg, in Le Mystère des XV [fr] (later translated as The Nyctalope on Mars). Nearly two decades later, Edmond Hamilton presented space explorers with a mixture of organic and machine parts in his 1928 novel The Comet Doom. He later featured the talking, living brain of an old scientist, Simon Wright, floating in a transparent case, and in all the adventures of his famous hero, Captain Future. In 1944, in the short story "No Woman Born", C. L. Moore wrote of Deirdre, a dancer, whose body was burned completely and whose brain was placed in a faceless but beautiful and supple mechanical body.

In 1960, the term "cyborg" was coined by Manfred E. Clynes and Nathan S. Kline to refer to their conception of an enhanced human being who could survive in extraterrestrial environments:

For the exogenously extended organizational complex functioning as an integrated homeostatic system unconsciously, we propose the term 'Cyborg'.

Their concept was the outcome of thinking about the need for an intimate relationship between human and machine as the new frontier of space exploration was beginning to develop. A designer of physiological instrumentation and electronic data-processing systems, Clynes was the chief research scientist in the Dynamic Simulation Laboratory at Rockland State Hospital in New York.

The term first appears in print 5 months earlier when The New York Times reported on the "Psychophysiological Aspects of Space Flight Symposium" where Clynes and Kline first presented their paper:

A cyborg is essentially a man-machine system in which the control mechanisms of the human portion are modified externally by drugs or regulatory devices so that the being can live in an environment different from the normal one.

Thereafter, Hamilton would first use the term "cyborg" explicitly in the 1962 short story, "After a Judgment Day", to describe the "mechanical analogs" called "Charlies," explaining that "[c]yborgs, they had been called from the first one in the 1960s...cybernetic organisms."

In 2001, a book titled Cyborg: Digital Destiny and Human Possibility in the Age of the Wearable computer was published by Doubleday. Some of the ideas in the book were incorporated into the documentary film Cyberman that same year.

Cyborg tissues in engineering

Cyborg tissues structured with carbon nanotubes and plant or fungal cells have been used in artificial tissue engineering to produce new materials for mechanical and electrical uses.

Such work was presented by Raffaele Di Giacomo, Bruno Maresca, and others, at the Materials Research Society's spring conference on 3 April 2013. The cyborg obtained was inexpensive, light and had unique mechanical properties. It could also be shaped in the desired forms. Cells combined with multi-walled carbon nanotubes (MWCNTs) co-precipitated as a specific aggregate of cells and nanotubes that formed a viscous material. Likewise, dried cells still acted as a stable matrix for the MWCNT network. When observed by optical microscopy, the material resembled an artificial "tissue" composed of highly packed cells. The effect of cell drying was manifested by their "ghost cell" appearance. A rather specific physical interaction between MWCNTs and cells was observed by electron microscopy, suggesting that the cell wall (the outermost part of fungal and plant cells) may play a major active role in establishing a carbon nanotube's network and its stabilization. This novel material can be used in a wide range of electronic applications, from heating to sensing. For instance, using Candida albicans cells, a species of yeast that often lives inside the human gastrointestinal tract, cyborg tissue materials with temperature sensing properties have been reported.

Actual cyborgization attempts

Cyborg Neil Harbisson with his antenna implant

In current prosthetic applications, the C-Leg system developed by Otto Bock HealthCare, is used to replace a human leg that has been amputated because of injury or illness. The use of sensors in the artificial C-Leg aids in walking significantly by attempting to replicate the user's natural gait, as it would be prior to amputation. A similar system is being developed by the Swedish orthopedic company Integrum, the OPRA Implant System, which is surgically anchored and integrated by means of osseointegration into the skeleton of the remainder of the amputated limb. The same company has developed e-OPRA, a will-powered upper limb prosthesis system that is being evaluated in a clinical trial to allow sensory input to the central nervous system using pressure and temperature sensors in the prosthesis' finger tips.[ Prostheses like the C-Leg, the e-OPRA Implant System, and the iLimb, are considered by some to be the first real steps towards the next generation of real-world cyborg applications. Additionally, cochlear implants and magnetic implants, which provide people with a sense that they would not otherwise have had, can additionally be thought of as creating cyborgs.

In vision science, direct brain implants have been used to treat non-congenital (acquired) blindness. One of the first scientists to come up with a working brain interface to restore sight was private researcher William Dobelle. Dobelle's first prototype was implanted into "Jerry", a man blinded in adulthood, in 1978. A single-array BCI containing 68 electrodes was implanted onto Jerry's visual cortex and succeeded in producing phosphenes, the sensation of seeing light. The system included cameras mounted on glasses to send signals to the implant. Initially, the implant allowed Jerry to see shades of grey in a limited field of vision at a low frame-rate. This also required him to be hooked up to a two-ton mainframe, but shrinking electronics and faster computers made his artificial eye more portable and now enable him to perform simple tasks unassisted.

In 1997, Philip Kennedy, a scientist and physician, created the world's first human cyborg from Johnny Ray, a Vietnam War veteran who suffered a stroke. Ray's body, as doctors called it, was "locked in". Ray wanted his old life back so he agreed to Kennedy's experiment. Kennedy embedded an implant he designed (and named a "neurotrophic electrode") near the injured part of Ray's brain so that Ray would be able to have some movement back in his body. The surgery went successfully, but in 2002, Ray died.

In 2002, Canadian Jens Naumann, also blinded in adulthood, became the first in a series of 16 paying patients to receive Dobelle's second-generation implant, marking one of the earliest commercial uses of BCIs. The second-generation device used a more sophisticated implant enabling better mapping of phosphenes into coherent vision. Phosphenes are spread out across the visual field in what researchers call the starry-night effect. Immediately after his implant, Naumann was able to use his imperfectly restored vision to drive slowly around the parking area of the research institute.

In contrast to replacement technologies, in 2002, under the heading Project Cyborg, a British scientist, Kevin Warwick, had an array of 100 electrodes fired into his nervous system to link his nervous system into the internet to investigate enhancement possibilities. With this in place, Warwick successfully carried out a series of experiments including extending his nervous system over the internet to control a robotic hand, also receiving feedback from the fingertips to control the hand's grip. This was a form of extended sensory input. Subsequently, he investigated ultrasonic input to remotely detect the distance to objects. Finally, with electrodes also implanted into his wife's nervous system, they conducted the first direct electronic communication experiment between the nervous systems of two humans.

Since 2004, British artist Neil Harbisson has had a cyborg antenna implanted in his head that allows him to extend his perception of colors beyond the human visual spectrum through vibrations in his skull. His antenna was included within his 2004 passport photograph which has been said to confirm his cyborg status. In 2012 at TEDGlobal, Harbisson explained that he started to feel like a cyborg when he noticed that the software and his brain had united and given him an extra sense. Harbisson is a co-founder of the Cyborg Foundation (2004) and cofounded the Transpecies Society in 2017, which is an association that empowers individuals with non-human identities and supports them in their decisions to develop unique senses and new organs. Neil Harbisson is a global advocate for the rights of cyborgs.

Rob Spence, a Toronto-based filmmaker, who titles himself a real-life "Eyeborg", severely damaged his right eye in a shooting accident on his grandfather's farm as a child. Many years later, in 2005, he decided to have his ever-deteriorating and now technically blind eye surgically removed, whereafter he wore an eyepatch for some time before he later, after having played for some time with the idea of installing a camera instead, contacted professor Steve Mann at the Massachusetts Institute of Technology, an expert in wearable computing and cyborg technology.

Under Mann's guidance, Spence, at age 36, created a prototype in the form of the miniature camera which could be fitted inside his prosthetic eye; an invention that would come to be named by Time magazine as one of the best inventions of 2009. The bionic eye records everything he sees and contains a 1.5 mm2, low-resolution video camera, a small round printed circuit board, a wireless video transmitter, which allows him to transmit what he is seeing in real-time to a computer, and a 3-volt rechargeable VARTA microbattery. The eye is not connected to his brain and has not restored his sense of vision. Additionally, Spence has also installed a laser-like LED light in one version of the prototype.

Furthermore, many people with multifunctional radio frequency identification (RFID) microchips injected into a hand are known to exist. With the chips they are able to swipe cards, open or unlock doors, operate devices such as printers or, with some using cryptocurrency, buy products, such as drinks, with a wave of the hand.

bodyNET

bodyNET is an application of human-electronic interaction currently in development by researchers from Stanford University. The technology is based on stretchable semiconductor materials (Elastronic). According to their article in Nature, the technology is composed of smart devices, screens, and a network of sensors that can be implanted into the body, woven into the skin or worn as clothes. It has been suggested that this platform can potentially replace the smartphone in the future.

Practical applications

In medicine and biotechnology

In medicine, there are two important and different types of cyborgs: the restorative and the enhanced. Restorative technologies "restore lost function, organs, and limbs." The key aspect of restorative cyborgization is the repair of broken or missing processes to revert to a healthy or average level of function. There is no enhancement to the original faculties and processes that were lost.

On the contrary, the enhanced cyborg "follows a principle, and it is the principle of optimal performance: maximising output (the information or modifications obtained) and minimising input (the energy expended in the process)". Thus, the enhanced cyborg intends to exceed normal processes or even gain new functions that were not originally present.

Prosthetics

Although prostheses in general supplement lost or damaged body parts with the integration of a mechanical artifice, bionic implants in medicine allow model organs or body parts to mimic the original function more closely. Michael Chorost wrote a memoir of his experience with cochlear implants, or bionic ears, titled Rebuilt: How Becoming Part Computer Made Me More Human. Jesse Sullivan became one of the first people to operate a fully robotic limb through a nerve-muscle graft, enabling him a complex range of motions beyond that of previous prosthetics. By 2004, a fully functioning artificial heart was developed. The continued technological development of bionic and (bio-)nanotechnologies begins to raise the question of enhancement, and of the future possibilities for cyborgs which surpass the original functionality of the biological model. The ethics and desirability of "enhancement prosthetics" have been debated; their proponents include the transhumanist movement, with its belief that new technologies can assist the human race in developing beyond its present, normative limitations such as aging and disease, as well as other, more general inabilities, such as limitations on speed, strength, endurance, and intelligence. Opponents of the concept describe what they believe to be biases which propel the development and acceptance of such technologies; namely, a bias towards functionality and efficiency that may compel assent to a view of human people which de-emphasizes as defining characteristics actual manifestations of humanity and personhood, in favor of definition in terms of upgrades, versions, and utility.

Retinal implants are another form of cyborgization in medicine. The theory behind retinal stimulation to restore vision for those suffering from retinitis pigmentosa and vision loss due to aging (conditions in which people have an abnormally low number of retinal ganglion cells), is that the retinal implant and electrical stimulation would act as a substitute for the missing ganglion cells (cells which connect the eye to the brain).

While the work to perfect this technology is still being done, there have already been major advances in the use of electronic stimulation of the retina to allow the eye to sense patterns of light. A specialized camera is worn by the subject, such as on the frames of their glasses, which converts the image into a pattern of electrical stimulation. A chip located in the user's eye would then electrically stimulate the retina with this pattern by exciting certain nerve endings which transmit the image to the optic centers of the brain, and the image would then appear to the user. If technological advances proceed as planned, this technology may be used by thousands of blind people and restore vision to most of them.

A similar process has been created to aid people who have lost their vocal cords. This experimental device would do away with previously used robotic-sounding voice simulators. The transmission of sound would start with a surgery to redirect the nerve that controls the voice and sound production to a muscle in the neck, where a nearby sensor would be able to pick up its electrical signals. The signals would then move to a processor which would control the timing and pitch of a voice simulator. That simulator would then vibrate producing a multi-tonal sound that could be shaped into words by the mouth.

An article published in Nature Materials in 2012 reported research on "cyborg tissues" (engineered human tissues with embedded three-dimensional mesh of nanoscale wires), with possible medical implications.

In 2014, researchers from the University of Illinois at Urbana–Champaign and Washington University in St. Louis had developed a device that could keep a heart beating endlessly. By using 3D printing and computer modeling, these scientists developed an electronic membrane that could successfully replace pacemakers. The device uses a "spider-web like network of sensors and electrodes" to monitor and maintain a normal heart rate with electrical stimuli. Unlike traditional pacemakers that are similar from patient to patient, the elastic heart glove is made custom by using high-resolution imaging technology. The first prototype was created to fit a rabbit's heart, operating the organ in an oxygen and nutrient-rich solution. The stretchable material and circuits of the apparatus were first constructed by Professor John A. Rogers in which the electrodes are arranged in an s-shape design to allow them to expand and bend without breaking. Although the device is only currently used as a research tool to study changes in heart rate, in the future the membrane may serve as a safeguard against heart attacks.

Neural enhancement and restoration

A brain–computer interface, or BCI, provides a direct path of communication from the brain to an external device, effectively creating a cyborg. Research into invasive BCIs, which use electrodes implanted directly into the grey matter of the brain, has focused on restoring damaged eyesight in the blind and providing functionality to paralyzed people, most notably those with severe cases, such as locked-in syndrome. This technology could enable people who are missing a limb or are in a wheelchair the power to control the devices that aid them through neural signals sent from the brain implants directly to computers or the devices. It is possible that this technology will also eventually be used with healthy people.

Deep brain stimulation is a neurological surgical procedure used for therapeutic purposes. This process has aided in treating patients diagnosed with Parkinson's disease, Alzheimer's disease, Tourette syndrome, epilepsy, chronic headaches, and mental disorders. After the patient is unconscious, through anesthesia, brain pacemakers or electrodes, are implanted into the region of the brain where the cause of the disease is present. The region of the brain is then stimulated by bursts of electric current to disrupt the oncoming surge of seizures. Like all invasive procedures, deep brain stimulation may put the patient at a higher risk. However, there have been more improvements in recent years with deep brain stimulation than any available drug treatment.

Pharmacology

Automated insulin delivery systems, colloquially also known as the "artificial pancreas", are a substitute for the lack of natural insulin production by the body, most notably in Type 1 Diabetes. Currently available systems combine a continuous glucose monitor with an insulin pump that can be remote controlled, forming a control loop that automatically adjusts the insulin dosage depending on the current blood glucose level. Examples of commercial systems that implement such a control loop are the MiniMed 670G from Medtronic and the t:slim x2 from Tandem Diabetes Care. Do-it-yourself artificial pancreas technologies also exist, though these are not verified or approved by any regulatory agency. Upcoming next-generation artificial pancreas technologies include automatic glucagon infusion in addition to insulin, to help prevent hypoglycemia and improve efficiency. One example of such a bi-hormonal system is the Beta Bionics iLet.

In the military

Military organizations' research has recently focused on the use of cyborg animals for the purposes of a supposed tactical advantage. DARPA has announced its interest in developing "cyborg insects" to transmit data from sensors implanted into the insect during the pupa stage. The insect's motion would be controlled from a microelectromechanical system (MEMS) and could conceivably survey an environment or detect explosives and gas. Similarly, DARPA is developing a neural implant to remotely control the movement of sharks. The shark's unique senses would then be exploited to provide data feedback in relation to enemy ship movement or underwater explosives.

In 2006, researchers at Cornell University invented a new surgical procedure to implant artificial structures into insects during their metamorphic development. The first insect cyborgs, moths with integrated electronics in their thorax, were demonstrated by the same researchers. The initial success of the techniques has resulted in increased research and the creation of a program called Hybrid-Insect-MEMS (HI-MEMS). Its goal, according to DARPA's Microsystems Technology Office, is to develop "tightly coupled machine-insect interfaces by placing micro-mechanical systems inside the insects during the early stages of metamorphosis."

The use of neural implants has recently been attempted, with success, on cockroaches. Surgically applied electrodes were put on the insect, which was remotely controlled by a human. The results, although sometimes different, basically showed that the cockroach could be controlled by the impulses it received through the electrodes. DARPA is now funding this research because of its obvious beneficial applications to the military and other areas.

In 2009 at the Institute of Electrical and Electronics Engineers (IEEE) MEMS conference in Italy, researchers demonstrated the first "wireless" flying-beetle cyborg. Engineers at the University of California, Berkeley, have pioneered the design of a "remote-controlled beetle", funded by the DARPA HI-MEMS Program. This was followed later that year by the demonstration of wireless control of a "lift-assisted" moth-cyborg.

Eventually researchers plan to develop HI-MEMS for dragonflies, bees, rats, and pigeons. For the HI-MEMS cybernetic bug to be considered a success, it must fly 100 metres (330 ft) from a starting point, guided via computer into a controlled landing within 5 metres (16 ft) of a specific end point. Once landed, the cybernetic bug must remain in place.

In 2020, an article published in Science Robotics by researchers at the University of Washington reported a mechanically steerable wireless camera attached to beetles. Miniature cameras weighing 248 mg were attached to live beetles of the Tenebrionid genera Asbolus and Eleodes. The camera wirelessly streamed video to a smartphone via Bluetooth for up to 6 hours and the user could remotely steer the camera to achieve a bug's-eye view.

In sports

In 2016, Cybathlon became the first cyborg 'Olympics'; celebrated in Zurich, Switzerland, it was the first worldwide and official celebration of cyborg sports. In this event, 16 teams of people with disabilities used technological developments to turn themselves into cyborg athletes. There were 6 different events and its competitors used and controlled advanced technologies such as powered prosthetic legs and arms, robotic exoskeletons, bikes, and motorized wheelchairs.

This was already a remarkable improvement, as it allowed disabled people to compete and showed the several technological enhancements that are already making a difference; however, it showed that there is still a long way to go. For instance, the exoskeleton race still required its participants to stand up from a chair and sit down, navigate a slalom and other simple activities such as walking over stepping stones and climbing up and down stairs. Despite the simplicity of these activities, 8 of the 16 teams that participated in the event drop off before the start.

Nonetheless, one of the main goals of this event and such simple activities is to show how technological enhancements and advanced prosthetics can make a difference in people's lives. The next Cybathlon that was expected to occur in 2020, was cancelled due to the coronavirus pandemic.

In Art

Cyborg artist Moon Ribas, founder of the Cyborg Foundation performing with her seismic sense implant at TED (2016)

The concept of the cyborg is often associated with science fiction. However, many artists have incorporated and reappropriated the idea of cybernetic organisms into their work, using disparate aesthetics and often realising actual cyborg constructs; their works range from performances, to paintings and installations. Some of the pioneering artists who created such works are H. R. Giger, Stelarc, Orlan, Shu Lea Cheang, Lee Bul, Tim Hawkinson, Steve Mann, Patricia Piccinini. More recently, this type of artistic practice has been expanded upon by artists such as Marco Donnarumma, Wafaa Bilal, Neil Harbisson, Moon Ribas, Manel De Aguas and Quimera Rosa.

Stelarc is a performance artist who has visually probed and acoustically amplified his body. He uses medical instruments, prosthetics, robotics, virtual reality systems, the Internet and biotechnology to explore alternate, intimate and involuntary interfaces with the body. He has made three films of the inside of his body and has performed with a third hand and a virtual arm. Between 1976 and 1988 he completed 25 body suspension performances with hooks into the skin. For 'Third Ear', he surgically constructed an extra ear within his arm that was internet-enabled, making it a publicly accessible acoustical organ for people in other places. He is presently performing as his avatar from his second life site.

Tim Hawkinson promotes the idea that bodies and machines are coming together as one, where human features are combined with technology to create the Cyborg. Hawkinson's piece Emoter presented how society is now dependent on technology.

Marco Donnarumma is a performance artist and new media artist. In his work the body becomes a morphing language to speak critically of ritual, power and technology. For his "7 Configurations" cycle, between 2014 and 2019, he engineered and created six AI prostheses, each embodying an uncanny configuration of the machinic with the organic. The prostheses – designed together with a team of artists and scientists – are useless prostheses, paradoxical objects designed for the body, but not to enhance it, rather to subtract functions from it: a skin-cutting robot with a steel metal knife, a facial prosthesis which blocks the wearer’s gaze with a mechanical arm, and two robotic spines that function as additional limbs without a body. The prostheses have been created to act as performers with their own agency, that is, to interact with their human partners without being controlled externally. The machines are embedded with biomimetic neural networks, information processing algorithms inspired by the biological nervous system of mammals. Developed by Donnarumma in collaboration with the Neurorobotics Research Laboratory (DE), these neural networks endow the machines with artificial cognitive and sensorimotor skills.

Wafaa Bilal is an Iraqi-American performance artist who had a small 10-megapixel digital camera surgically implanted into the back of his head, part of a project entitled 3rd I. For one year, beginning 15 December 2010, an image was captured once per minute 24 hours a day and streamed live to www.3rdi.me and the Mathaf: Arab Museum of Modern Art. The site also displays Bilal's location via GPS. Bilal says that the reason why he put the camera in the back of the head was to make an "allegorical statement about the things we don't see and leave behind." As a professor at NYU, this project raised privacy issues, and so Bilal was asked to ensure that his camera did not take photographs in NYU buildings.

Machines are becoming more ubiquitous in the artistic process itself, with computerized drawing pads replacing pen and paper, and drum machines becoming nearly as popular as human drummers. Composers such as Brian Eno have developed and used software that can build entire musical scores from a few basic mathematical parameters.

Scott Draves is a generative artist whose work is explicitly described as a "cyborg mind". His Electric Sheep project generates abstract art by combining the work of many computers and people over the internet.

Artists as cyborgs

Artists have explored the term cyborg from a perspective involving imagination. Some work to make an abstract idea of technological and human-bodily union apparent to reality in an art form using varying mediums, from sculptures and drawings to digital renderings. Artists who seek to make cyborg-based fantasies a reality often call themselves cyborg artists, or may consider their artwork "cyborg". How an artist or their work may be considered cyborg will vary depending upon the interpreter's flexibility with the term.

Scholars that rely upon a strict, technical description of a cyborg, often going by Norbert Wiener's cybernetic theory and Manfred E. Clynes and Nathan S. Kline's first use of the term, would likely argue that most cyborg artists do not qualify to be considered cyborgs. Scholars considering a more flexible description of cyborgs may argue it incorporates more than cybernetics. Others may speak of defining subcategories, or specialized cyborg types, that qualify different levels of cyborg at which technology influences an individual. This may range from technological instruments being external, temporary, and removable to being fully integrated and permanent. Nonetheless, cyborg artists are artists. Being so, it can be expected for them to incorporate the cyborg idea rather than a strict, technical representation of the term, seeing how their work will sometimes revolve around other purposes outside of cyborgism.

In body modification

As medical technology becomes more advanced, some techniques and innovations are adopted by the body modification community. While not yet cyborgs in the strict definition of Manfred Clynes and Nathan Kline, technological developments like implantable silicon silk electronics, augmented reality and QR codes are bridging the disconnect between technology and the body. Hypothetical technologies such as digital tattoo interfaces would blend body modification aesthetics with interactivity and functionality, bringing a transhumanist way of life into present day reality.

In addition, it is quite plausible for anxiety expression to manifest. Individuals may experience pre-implantation feelings of fear and nervousness. To this end, individuals may also embody feelings of uneasiness, particularly in a socialized setting, due to their post-operative, technologically augmented bodies, and mutual unfamiliarity with the mechanical insertion. Anxieties may be linked to notions of otherness or a cyborged identity.

In space

Sending humans to space is a dangerous task in which the implementation of various cyborg technologies could be used in the future for risk mitigation. Stephen Hawking, a renowned physicist, stated "Life on Earth is at the ever-increasing risk of being wiped out by a disaster such as sudden global warming, nuclear war ... I think the human race has no future if it doesn't go into space." The difficulties associated with space travel could mean it might be centuries before humans ever become a multi-planet species. There are many effects of spaceflight on the human body. One major issue of space exploration is the biological need for oxygen. If this necessity was taken out of the equation, space exploration would be revolutionized. A theory proposed by Manfred E. Clynes and Nathan S. Kline is aimed at tackling this problem. The two scientists theorized that the use of an inverse fuel cell that is "capable of reducing CO2 to its components with the removal of the carbon and re-circulation of the oxygen ..." could make breathing unnecessary. Another prominent issue is radiation exposure. Yearly, the average human on earth is exposed to approximately 0.30 rem of radiation, while an astronaut aboard the International Space Station for 90 days is exposed to 9 rem. To tackle the issue, Clynes and Kline theorized a cyborg containing a sensor that would detect radiation levels and a Rose osmotic pump "which would automatically inject protective pharmaceuticals in appropriate doses." Experiments injecting these protective pharmaceuticals into monkeys have shown positive results in increasing radiation resistance.

Although the effects of spaceflight on our bodies are an important issue, the advancement of propulsion technology is just as important. With our current technology, it would take us about 260 days to get to Mars. A study backed by NASA proposes an interesting way to tackle this issue through deep sleep, or torpor. With this technique, it would "reduce astronauts' metabolic functions with existing medical procedures." So far experiments have only resulted in patients being in torpor state for one week. Advancements to allow for longer states of deep sleep would lower the cost of the trip to Mars as a result of reduced astronaut resource consumption.

In cognitive science

Theorists such as Andy Clark suggest that interactions between humans and technology result in the creation of a cyborg system. In this model, cyborg is defined as a part-biological, part-mechanical system that results in the augmentation of the biological component and the creation of a more complex whole. Clark argues that this broadened definition is necessary to an understanding of human cognition. He suggests that any tool which is used to offload part of a cognitive process may be considered the mechanical component of a cyborg system. Examples of this human and technology cyborg system can be very low tech and simplistic, such as using a calculator to perform basic mathematical operations or pen and paper to make notes, or as high tech as using a personal computer or phone. According to Clark, these interactions between a person and a form of technology integrate that technology into the cognitive process in a way that is analogous to the way that a technology that would fit the traditional concept of cyborg augmentation becomes integrated with its biological host. Because all humans in some way use technology to augment their cognitive processes, Clark comes to the conclusion that we are "natural-born cyborgs." Professor Donna Haraway also theorizes that people, metaphorically or literally, have been cyborgs since the late twentieth century. If one considers the mind and body as one, much of humanity is aided with technology in almost every way, which hybridizes humans with technology.

Future scope and regulation of implantable technologies

Given the technical scope of current and future implantable sensory/telemetric devices, such devices will be greatly proliferated, and will have connections to commercial, medical, and governmental networks. For example, in the medical sector, patients will be able to log in to their home computer, and thus visit virtual doctor's offices, medical databases, and receive medical prognoses from the comfort of their own home from the data collected through their implanted telemetric devices. However, this online network presents large security concerns because it has been proven by several U.S. universities that hackers could get onto these networks and shut down peoples' electronic prosthetics. Cyborg data mining refers to the collection of data produced by implantable devices.

These sorts of technologies are already present in the U.S. workforce as a firm in River Falls, Wisconsin, called Three Square Market partnered with a Swedish firm Biohacks Technology to implant RFID microchips (which are about the size of a grain of rice) in the hands of its employees that allow employees to access offices, computers, and even vending machines. More than 50 of the firm's 85 employees were chipped. It was confirmed that the American Food and Drug Administration approved of these implantations. If these devices are to be proliferated within society, then the question that begs to be answered is what regulatory agency will oversee the operations, monitoring, and security of these devices? According to this case study of Three Square Market, it seems that the FDA is assuming a role in regulating and monitoring these devices. It has been argued that a new regulatory framework needs to be developed so that the law keeps up with developments in implantable technologies.

Cyborg Foundation

In 2010, the Cyborg Foundation became the world's first international organization dedicated to help humans become cyborgs. The foundation was created by cyborg Neil Harbisson and Moon Ribas as a response to the growing number of letters and emails received from people around the world interested in becoming cyborgs. The foundation's main aims are to extend human senses and abilities by creating and applying cybernetic extensions to the body, to promote the use of cybernetics in cultural events and to defend cyborg rights. In 2010, the foundation, based in Mataró (Barcelona), was the overall winner of the Cre@tic Awards, organized by Tecnocampus Mataró.

In 2012, Spanish film director Rafel Duran Torrent, created a short film about the Cyborg Foundation. In 2013, the film won the Grand Jury Prize at the Sundance Film Festival's Focus Forward Filmmakers Competition and was awarded US$100,000.

In fiction

Cyborgs are a recurring feature of science fiction literature and other media.

Animal cyborgs

Remote-controlled rechargeable cyborg insects

The US-based company Backyard Brains released what they refer to as the "world's first commercially available cyborg" called the RoboRoach. The project started as a senior design project for a University of Michigan biomedical engineering student in 2010, and was launched as an available beta product on 25 February 2011. The RoboRoach was officially released into production via a TED talk at the TED Global conference; and via the crowdsourcing website Kickstarter in 2013, the kit allows students to use microstimulation to momentarily control the movements of a walking cockroach (left and right) using a Bluetooth-enabled smartphone as the controller.

Other groups have developed cyborg insects, including researchers at North Carolina State University, UC Berkeley, and Nanyang Technological University, Singapore, but the RoboRoach was the first kit available to the general public and was funded by the National Institute of Mental Health as a device to serve as a teaching aid to promote an interest in neuroscience. Several animal welfare organizations including the RSPCA and PETA have expressed concerns about the ethics and welfare of animals in this project. In 2022, remote controlled cyborg cockroaches functional if moving (or moved) to sunlight for recharging were presented. They could be used e.g. for purposes of inspecting hazardous areas or quickly finding humans underneath hard-to-access rubbles at disaster sites.

In the late 2010s, scientists created cyborg jellyfish using a microelectronic prosthetic that propels the animal to swim almost three times faster while using just twice the metabolic energy of their unmodified peers. The prosthetics can be removed without harming the jellyfish.

Bacterial cyborg cells

A combination of synthetic biology, nanotechnology and materials science approaches have been used to create a few different iterations of bacterial cyborg cells. These different types of mechanically enhanced bacteria are created with so called bionic manufacturing principles that combine natural cells with abiotic materials. In 2005, researchers from the Department of Chemical Engineering at the University of Nebraska, Lincoln created a super sensitive humidity sensor by coating the bacteria Bacillus cereus with gold nanoparticles, being the first to use a microorganism to make an electronic device and presumably the first cyborg bacteria or cellborg circuit. Researchers from the Department of Chemistry at the University of California, Berkeley published a series of articles in 2016 describing the development of cyborg bacteria capable to harvest sunlight more efficiently than plants. In the first study, the researchers induced the self-photosensitization of a nonphotosynthetic bacterium, Moorella thermoacetica, with cadmium sulfide nanoparticles, enabling the photosynthesis of acetic acid from carbon dioxide. A follow-up article described the elucidation of the mechanism of semiconductor-to-bacterium electron transfer that allows the transformation of carbon dioxide and sunlight into acetic acid. Scientists of the Department of Biomedical Engineering at the University of California, Davis and Academia Sinica in Taiwan, developed a different approach to create cyborg cells by assembling a synthetic hydrogel inside the bacterial cytoplasm of Escherichia. coli cells rendering them incapable of dividing and making them resistant to environmental factors, antibiotics and high oxidative stress. The intracellular infusion of synthetic hydrogel provides these cyborg cells with an artificial cytoskeleton and their acquired tolerance makes them well placed to become a new class of drug-delivery systems positioned between classical synthetic materials and cell-based systems.

Mind uploading

From Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Mind_uploading
Refer to caption
Schematic representation of a mind being uploaded from a human brain to a computer

Mind uploading is a speculative process of whole brain emulation in which a brain scan is used to completely emulate the mental state of the individual in a digital computer. The computer would then run a simulation of the brain's information processing, such that it would respond in essentially the same way as the original brain and experience having a sentient conscious mind.

Substantial mainstream research in related areas is being conducted in neuroscience and computer science, including animal brain mapping and simulation, development of faster supercomputers, virtual reality, brain–computer interfaces, connectomics, and information extraction from dynamically functioning brains. According to supporters, many of the tools and ideas needed to achieve mind uploading already exist or are under active development; however, they will admit that others are, as yet, very speculative, but say they are still in the realm of engineering possibility.

Mind uploading may potentially be accomplished by either of two methods: copy-and-upload or copy-and-delete by gradual replacement of neurons (which can be considered as a gradual destructive uploading), until the original organic brain no longer exists and a computer program emulating the brain takes control of the body. In the case of the former method, mind uploading would be achieved by scanning and mapping the salient features of a biological brain, and then by storing and copying that information state into a computer system or another computational device. The biological brain may not survive the copying process or may be deliberately destroyed during it in some variants of uploading. The simulated mind could be within a virtual reality or simulated world, supported by an anatomic 3D body simulation model. Alternatively, the simulated mind could reside in a computer inside—or either connected to or remotely controlled by—a (not necessarily humanoid) robot, biological, or cybernetic body.

Among some futurists and within part of transhumanist movement, mind uploading is treated as an important proposed life extension or immortality technology (known as "digital immortality"). Some believe mind uploading is humanity's current best option for preserving the identity of the species, as opposed to cryonics. Another aim of mind uploading is to provide a permanent backup to our "mind-file", to enable interstellar space travel, and a means for human culture to survive a global disaster by making a functional copy of a human society in a computing device. Whole-brain emulation is discussed by some futurists as a "logical endpoint" of the topical computational neuroscience and neuroinformatics fields, both about brain simulation for medical research purposes. It is discussed in artificial intelligence research publications as an approach to strong AI (artificial general intelligence) and to at least weak superintelligence. Another approach is seed AI, which would not be based on existing brains. Computer-based intelligence such as an upload could think much faster than a biological human even if it were no more intelligent. A large-scale society of uploads might, according to futurists, give rise to a technological singularity, meaning a sudden time constant decrease in the exponential development of technology. Mind uploading is a central conceptual feature of numerous science fiction novels, films, and games.

Overview

Many neuroscientists believe that the human mind is largely an emergent property of the information processing of its neuronal network.

Neuroscientists have stated that important functions performed by the mind, such as learning, memory, and consciousness, are due to purely physical and electrochemical processes in the brain and are governed by applicable laws. For example, Christof Koch and Giulio Tononi wrote in IEEE Spectrum:

Consciousness is part of the natural world. It depends, we believe, only on mathematics and logic and on the imperfectly known laws of physics, chemistry, and biology; it does not arise from some magical or otherworldly quality.

Eminent computer scientists and neuroscientists have predicted that advanced computers will be capable of thought and even attain consciousness, including Koch and Tononi, Douglas Hofstadter, Jeff Hawkins, Marvin Minsky, Randal A. Koene, and Rodolfo Llinás.

Many theorists have presented models of the brain and have established a range of estimates of the amount of computing power needed for partial and complete simulations. Using these models, some have estimated that uploading may become possible within decades if trends such as Moore's law continue. As of December 2022, this kind of technology is almost entirely theoretical.

Theoretical benefits and applications

"Immortality" or backup

In theory, if the information and processes of the mind can be disassociated from the biological body, they are no longer tied to the individual limits and lifespan of that body. Furthermore, information within a brain could be partly or wholly copied or transferred to one or more other substrates (including digital storage or another brain), thereby—from a purely mechanistic perspective—reducing or eliminating "mortality risk" of such information. This general proposal was discussed in 1971 by biogerontologist George M. Martin of the University of Washington. This questions the concept of identity. From the perspective of the biological brain, the simulated brain may just be a copy, even if it is conscious and has an indistinguishable character. As such, the original biological being, before the uploading, might consider the digital twin to be a new and independent being rather than the future self.

Space exploration

An "uploaded astronaut" could be used instead of a "live" astronaut in human spaceflight, avoiding the perils of zero gravity, the vacuum of space, and cosmic radiation to the human body. It would allow for the use of smaller spacecraft, such as the proposed StarChip, and it would enable virtually unlimited interstellar travel distances.

Mind editing

While some researchers believe editing human brains to be physically possible in theory, for example by performing neurosurgery with nanobots, it would require particularly advanced technology. Editing an uploaded mind would be much easier, as long as the exact edits to be made are known. This would facilitate cognitive enhancement and the precise control of the well-being, motivations or personality of the emulated beings.

Speed

Although the number of neuronal connections in the human brain is very significant (around 100 trillions), the frequency of activation of biological neurons is limited to around 200 Hz, whereas electronic hardware can easily operate at multiple GHz. With sufficient hardware parallelism, a simulated brain could thus in theory be made to run faster than a biological brain. Uploaded beings may therefore not only be more efficient, but also supposedly have a faster rate of subjective experience than biological brains (e.g. experiencing an hour of lifetime in a single second of real time).

Relevant technologies and techniques

The focus of mind uploading, in the case of copy-and-transfer, is on data acquisition, rather than data maintenance of the brain. A set of approaches known as loosely coupled off-loading (LCOL) may be used in the attempt to characterize and copy the mental contents of a brain. The LCOL approach may take advantage of self-reports, life-logs and video recordings that can be analyzed by artificial intelligence. A bottom-up approach may focus on the specific resolution and morphology of neurons, the spike times of neurons, the times at which neurons produce action potential responses.

Computational complexity

Estimates of how much processing power is needed to emulate a human brain at various levels, along with the fastest and slowest supercomputers from TOP500 and a $1000 PC. Note the logarithmic scale. The (exponential) trend line for the fastest supercomputer reflects a doubling every 14 months. Kurzweil believes that mind uploading will be possible at neural simulation, while the Sandberg & Bostrom report is less certain about where consciousness arises.

Advocates of mind uploading point to Moore's law to support the notion that the necessary computing power is expected to become available within a few decades. However, the actual computational requirements for running an uploaded human mind are very difficult to quantify, potentially rendering such an argument specious.

Regardless of the techniques used to capture or recreate the function of a human mind, the processing demands are likely to be immense, due to the large number of neurons in the human brain along with the considerable complexity of each neuron.

Required computational capacity strongly depends on the chosen level of simulation model scale:

Level CPU demand
(FLOPS)
Memory demand
(Tb)
$1 million super‐computer
(Earliest year of making)
Analog network population model 1015 102 2008
Spiking neural network 1018 104 2019
Electrophysiology 1022 104 2033
Metabolome 1025 106 2044
Proteome 1026 107 2048
States of protein complexes 1027 108 2052
Distribution of complexes 1030 109 2063
Stochastic behavior of single molecules 1043 1014 2111
Estimates from Sandberg, Bostrom, 2008

Scanning and mapping scale of an individual

When modelling and simulating the brain of a specific individual, a brain map or connectivity database showing the connections between the neurons must be extracted from an anatomic model of the brain. For whole brain simulation, this network map should show the connectivity of the whole nervous system, including the spinal cord, sensory receptors, and muscle cells. Destructive scanning of a small sample of tissue from a mouse brain including synaptic details is possible as of 2010.

However, if short-term memory and working memory include prolonged or repeated firing of neurons, as well as intra-neural dynamic processes, the electrical and chemical signal state of the synapses and neurons may be hard to extract. The uploaded mind may then perceive a memory loss of the events and mental processes immediately before the time of brain scanning.

A full brain map has been estimated to occupy less than 2 x 1016 bytes (20,000 TB) and would store the addresses of the connected neurons, the synapse type and the synapse "weight" for each of the brains' 1015 synapses. However, the biological complexities of true brain function (e.g. the epigenetic states of neurons, protein components with multiple functional states, etc.) may preclude an accurate prediction of the volume of binary data required to faithfully represent a functioning human mind.

Serial sectioning

Serial sectioning of a brain

A possible method for mind uploading is serial sectioning, in which the brain tissue and perhaps other parts of the nervous system are frozen and then scanned and analyzed layer by layer, which for frozen samples at nano-scale requires a cryo-ultramicrotome, thus capturing the structure of the neurons and their interconnections. The exposed surface of frozen nerve tissue would be scanned and recorded, and then the surface layer of tissue removed. While this would be a very slow and labor-intensive process, research is underway to automate the collection and microscopy of serial sections. The scans would then be analyzed, and a model of the neural net recreated in the system into which the mind was being uploaded.

There are uncertainties with this approach using current microscopy techniques. If it is possible to replicate neuron function from its visible structure alone, then the resolution afforded by a scanning electron microscope would suffice for such a technique. However, as the function of brain tissue is partially determined by molecular events (particularly at synapses, but also at other places on the neuron's cell membrane), this may not suffice for capturing and simulating neuron functions. It may be possible to extend the techniques of serial sectioning and to capture the internal molecular makeup of neurons, through the use of sophisticated immunohistochemistry staining methods that could then be read via confocal laser scanning microscopy. However, as the physiological genesis of 'mind' is not currently known, this method may not be able to access all of the necessary biochemical information to recreate a human brain with sufficient fidelity.

Brain imaging

Process from MRI acquisition to whole brain structural network
Magnetoencephalography

It may be possible to create functional 3D maps of the brain activity, using advanced neuroimaging technology, such as functional MRI (fMRI, for mapping change in blood flow), magnetoencephalography (MEG, for mapping of electrical currents), or combinations of multiple methods, to build a detailed three-dimensional model of the brain using non-invasive and non-destructive methods. Today, fMRI is often combined with MEG for creating functional maps of human cortex during more complex cognitive tasks, as the methods complement each other. Even though current imaging technology lacks the spatial resolution needed to gather the information needed for such a scan, important recent and future developments are predicted to substantially improve both spatial and temporal resolutions of existing technologies.

Brain simulation

Ongoing work in the field of brain simulation includes partial and whole simulations of some animals. For example, the C. elegans roundworm, Drosophila fruit fly, and mouse have all been simulated to various degrees.

The Blue Brain Project, initiated by the Brain and Mind Institute of the École Polytechnique Fédérale de Lausanne in Switzerland, is an attempt to create a synthetic brain by reverse-engineering mammalian brain circuitry, in order to accelerate experimental research on the brain. In 2009, after a successful simulation of part of a rat brain, the director Henry Markram claimed that "A detailed, functional artificial human brain can be built within the next 10 years". In 2013, Markram became the director of the new decade-long Human Brain Project. But less than two years into it, the project was recognized to be mismanaged and its claims overblown, and Markram was asked to step down.

Nanobots

One approach to digital immortality is gradually "replacing" neurons in the brain with advanced medical technology such as nanobiotechnology, possibly using wetware computer technology or using nanobots to read brain structure as described by Alexey Turchin.

Issues

Philosophical issues

The main philosophical problem faced by "mind uploading" or mind copying is the hard problem of consciousness: the difficulty of explaining how a physical entity such as a human can have qualia, phenomenal consciousness, or subjective experience. Many philosophical responses to the hard problem entail that mind uploading is fundamentally or practically impossible, while others are compatible with at least some formulations of mind uploading. Many proponents of mind uploading defend the possibility of mind uploading by recourse to physicalism, which includes the philosophical belief that consciousness is an emergent feature that arises from large neural network high-level patterns of organization, which could be realized in other processing devices. Mind uploading relies on the idea that the human mind (the "self" and the long-term memory) reduces to the current neural network paths and the weights of synapses in the brain. In contrast, many dualistic and idealistic accounts seek to avoid the hard problem of consciousness by explaining it in terms of immaterial (and presumably inaccessible) substances like soul, which would pose a fundamental or at least practical challenge to the feasibility of artificial consciousness in general.

Assuming physicalism is true, the mind can be defined as the information state of the brain, so it is immaterial only in the same sense as the information content of a data file, or the state of software residing in a computer's memory. In this case, data specifying the information state of the neural network could be captured and copied as a "computer file" from the brain and re-implemented into a different physical form. This is not to deny that minds are richly adapted to their substrates. An analogy to mind uploading is to copy the information state of a computer program from the memory of the computer on which it is executing to another computer and then continue its execution on the second computer. The second computer may perhaps have different hardware architecture, but it emulates the hardware of the first computer.

These philosophical issues have a long history. In 1775, Thomas Reid wrote: “I would be glad to know... whether when my brain has lost its original structure, and when some hundred years after the same materials are fabricated so curiously as to become an intelligent being, whether, I say that being will be me; or, if, two or three such beings should be formed out of my brain; whether they will all be me, and consequently one and the same intelligent being.” Although the name of the hard problem of consciousness was coined in 1994, debate surrounding the problem itself is ancient. Augustine of Hippo argued against physicalist "Academians" in the 5th century, writing that consciousness cannot be an illusion because only a conscious being can be deceived or experience an illusion. René Descartes, the founder of mind-body dualism, made a similar objection in the 17th century, coining the popular phrase "Je pense, donc je suis" ("I think, therefore I am"). Although physicalism is known to have been proposed in ancient times, Thomas Huxley was among the first to describe mental experience as merely an epiphenomenon of interactions within the brain, having no causal power of its own and being entirely downstream from the brain's activity.

A considerable portion of transhumanists and singularitarians place great hope in the belief that they may become immortal, by creating one or many non-biological functional copies of their brains, thereby leaving their "biological shell". However, the philosopher and transhumanist Susan Schneider claims that at best, uploading would create a copy of the original person's mind. Schneider agrees that consciousness has a computational basis, but this does not mean we can upload and survive. According to her views, "uploading" would probably result in the death of the original person's brain, while only outside observers can maintain the illusion of the original person still being alive. For it is implausible to think that one's consciousness would leave one's brain and travel to a remote location; ordinary physical objects do not behave this way. Ordinary objects (rocks, tables, etc.) are not simultaneously here, and elsewhere. At best, a copy of the original mind is created. Neural correlates of consciousness, a sub-branch of neuroscience, states that consciousness may be thought of as a state-dependent property of some undefined complex, adaptive, and highly interconnected biological system.

Others have argued against such conclusions. For example, Buddhist transhumanist James Hughes has pointed out that this consideration only goes so far: if one believes the self is an illusion, worries about survival are not reasons to avoid uploading, and Keith Wiley has presented an argument wherein all resulting minds of an uploading procedure are granted equal primacy in their claim to the original identity, such that survival of the self is determined retroactively from a strictly subjective position. Some have also asserted that consciousness is a part of an extra-biological system that is yet to be discovered; therefore it cannot be fully understood under the present constraints of neurobiology. Without the transference of consciousness, true mind-upload or perpetual immortality cannot be practically achieved.

Another potential consequence of mind uploading is that the decision to "upload" may then create a mindless symbol manipulator instead of a conscious mind (see philosophical zombie). If a computer could process sensory inputs to generate the same outputs that a human mind does (speech, muscle movements, etc.) without necessarily having any experience of consciousness, then it may be impossible to determine whether the uploaded mind is truly conscious, and not merely an automaton that externally behaves the way a human would. Thought experiments like the Chinese room raise fundamental questions about mind uploading: If an upload displays behaviors that are highly indicative of consciousness, or even verbally insists that it is conscious, does that prove it is conscious? There might also be an absolute upper limit in processing speed, above which consciousness cannot be sustained. The subjectivity of consciousness precludes a definitive answer to this question.

Numerous scientists, including Ray Kurzweil, believe that whether a separate entity is conscious is impossible to know with confidence, since consciousness is inherently subjective (see also: solipsism). Regardless, some scientists believe consciousness is the consequence of computational processes which are substrate-neutral. Still other scientists, prominent among them Roger Penrose, believe consciousness may emerge from some form of quantum computation that is dependent on the organic substrate (see quantum mind).

In light of uncertainty about whether mind uploads are conscious, Sandberg proposes a cautious approach:

Principle of assuming the most (PAM): Assume that any emulated system could have the same mental properties as the original system and treat it correspondingly.

The process of developing emulation technology raises ethical issues related to animal welfare and artificial consciousness. The neuroscience required to develop brain emulation would require animal experimentation, first on invertebrates and then on small mammals before moving on to humans. Sometimes the animals would just need to be euthanized in order to extract, slice, and scan their brains, but sometimes behavioral and in vivo measures would be required, which might cause pain to living animals.

In addition, the resulting animal emulations themselves might suffer, depending on one's views about consciousness. Bancroft argues for the plausibility of consciousness in brain simulations on the basis of the "fading qualia" thought experiment of David Chalmers. He then concludes: “If, as I argue above, a sufficiently detailed computational simulation of the brain is potentially operationally equivalent to an organic brain, it follows that we must consider extending protections against suffering to simulations.” Chalmers himself has argued that such virtual realities would be genuine realities. However, if mind uploading occurs and the uploads are not conscious, there may be a significant opportunity cost. In the book Superintelligence, Nick Bostrom expresses concern that we could build a "Disneyland without children."

It might help reduce emulation suffering to develop virtual equivalents of anaesthesia, as well as to omit processing related to pain and/or consciousness. However, some experiments might require a fully functioning and suffering animal emulation. Animals might also suffer by accident due to flaws and lack of insight into what parts of their brains are suffering. Questions also arise regarding the moral status of partial brain emulations, as well as creating neuromorphic emulations that draw inspiration from biological brains but are built somewhat differently.

Brain emulations could be erased by computer viruses or malware, without the need to destroy the underlying hardware. This may make assassination easier than for physical humans. The attacker might take the computing power for its own use.

Many questions arise regarding the legal personhood of emulations. Would they be given the rights of biological humans? If a person makes an emulated copy of themselves and then dies, does the emulation inherit their property and official positions? Could the emulation ask to "pull the plug" when its biological version was terminally ill or in a coma? Would it help to treat emulations as adolescents for a few years so that the biological creator would maintain temporary control? Would criminal emulations receive the death penalty, or would they be given forced data modification as a form of "rehabilitation"? Could an upload have marriage and child-care rights?

If simulated minds would come true and if they were assigned rights of their own, it may be difficult to ensure the protection of "digital human rights". For example, social science researchers might be tempted to secretly expose simulated minds, or whole isolated societies of simulated minds, to controlled experiments in which many copies of the same minds are exposed (serially or simultaneously) to different test conditions.

Research led by cognitive scientist Michael Laakasuo has shown that attitudes towards mind uploading are predicted by an individual's belief in an afterlife; the existence of mind uploading technology may threaten religious and spiritual notions of immortality and divinity.

Political and economic implications

Emulations might be preceded by a technological arms race driven by first-strike advantages. Their emergence and existence may lead to increased risk of war, including inequality, power struggles, strong loyalty and willingness to die among emulations, and new forms of racism, xenophobia, and religious prejudice. If emulations run much faster than humans, there might not be enough time for human leaders to make wise decisions or negotiate. It is possible that humans would react violently against the growing power of emulations, especially if that depresses human wages. Emulations may not trust each other, and even well-intentioned defensive measures might be interpreted as offense.

The book The Age of Em by Robin Hanson poses many hypotheses on the nature of a society of mind uploads, including that the most common minds would be copies of adults with personalities conducive to long hours of productive specialized work.

Emulation timelines and AI risk

Kenneth D. Miller, a professor of neuroscience at Columbia University and a co-director of the Center for Theoretical Neuroscience, raised doubts about the practicality of mind uploading. His major argument is that reconstructing neurons and their connections is in itself a formidable task, but it is far from being sufficient. Operation of the brain depends on the dynamics of electrical and biochemical signal exchange between neurons; therefore, capturing them in a single "frozen" state may prove insufficient. In addition, the nature of these signals may require modeling at the molecular level and beyond. Therefore, while not rejecting the idea in principle, Miller believes that the complexity of the "absolute" duplication of an individual mind is insurmountable for the nearest hundreds of years.

There are very few feasible technologies that humans have refrained from developing. The neuroscience and computer-hardware technologies that may make brain emulation possible are widely desired for other reasons, and logically their development will continue into the future. We may also have brain emulations for a brief but significant period on the way to non-emulation based human-level AI. Assuming that emulation technology will arrive, a question becomes whether we should accelerate or slow its advance.

Arguments for speeding up brain-emulation research:

  • If neuroscience is the bottleneck on brain emulation rather than computing power, emulation advances may be more erratic and unpredictable based on when new scientific discoveries happen. Limited computing power would mean the first emulations would run slower and so would be easier to adapt to, and there would be more time for the technology to transition through society.
  • Improvements in manufacturing, 3D printing, and nanotechnology may accelerate hardware production, which could increase the "computing overhang" from excess hardware relative to neuroscience.
  • If one AI-development group had a lead in emulation technology, it would have more subjective time to win an arms race to build the first superhuman AI. Because it would be less rushed, it would have more freedom to consider AI risks.

Arguments for slowing brain-emulation research:

  • Greater investment in brain emulation and associated cognitive science might enhance the ability of artificial intelligence (AI) researchers to create "neuromorphic" (brain-inspired) algorithms, such as neural networks, reinforcement learning, and hierarchical perception. This could accelerate risks from uncontrolled AI. Participants at a 2011 AI workshop estimated an 85% probability that neuromorphic AI would arrive before brain emulation. This was based on the idea that brain emulation would require understanding of the workings and functions of the different brain components, along with the technological know-how to emulate neurons. To counter this idea, reverse engineering the Microsoft Windows code base is already hard, so reverse engineering the brain would likely be much harder. By a very narrow margin, the participants on balance leaned toward the view that accelerating brain emulation would increase expected AI risk.
  • Waiting might give society more time to think about the consequences of brain emulation and develop institutions to improve cooperation.

Emulation research would also accelerate neuroscience as a whole, which might accelerate medical advances, cognitive enhancement, lie detectors, and capability for psychological manipulation.

Emulations might be easier to control than de novo AI because:

  1. Human abilities, behavioral tendencies, and vulnerabilities are more thoroughly understood, thus control measures might be more intuitive and easier to plan.
  2. Emulations could more easily inherit human motivations.
  3. Emulations are harder to manipulate than de novo AI, because brains are messy and complicated; this could reduce risks of their rapid takeoff. Also, emulations may be bulkier and require more hardware than AI, which would also slow the speed of a transition. Unlike AI, an emulation would not be able to rapidly expand beyond the size of a human brain. Emulations running at digital speeds would have less intelligence differential vis-à-vis AI and so might more easily control AI.

As counterpoint to these considerations, Bostrom notes some downsides:

  1. Even if we better understand human behavior, the evolution of emulation behavior under self-improvement might be much less predictable than the evolution of safe de novo AI under self-improvement.
  2. Emulations may not inherit all human motivations. Perhaps they would inherit our darker motivations or would behave abnormally in the unfamiliar environment of cyberspace.
  3. Even if there is a slow takeoff toward emulations, there would still be a second transition to de novo AI later on. Two intelligence explosions may mean more total risk.

Because of the postulated difficulties that a whole brain emulation-generated superintelligence would pose for the control problem, computer scientist Stuart J. Russell in his book Human Compatible rejects creating one, simply calling it "so obviously a bad idea".

Advocates

In 1979, Hans Moravec (1979) described and endorsed mind uploading using a brain surgeon. Moravec used a similar description in 1988, calling it "transmigration".

Ray Kurzweil, director of engineering at Google, has long predicted that people will be able to "upload" their entire brains to computers and become "digitally immortal" by 2045. Kurzweil made this claim for many years, e.g. during his speech in 2013 at the Global Futures 2045 International Congress in New York, which claims to subscribe to a similar set of beliefs. Mind uploading has also been advocated by a number of researchers in neuroscience and artificial intelligence, such as Marvin Minsky. In 1993, Joe Strout created a small web site called the Mind Uploading Home Page, and began advocating the idea in cryonics circles and elsewhere on the net. That site has not been actively updated in recent years, but it has spawned other sites including MindUploading.org, run by Randal A. Koene, who also moderates a mailing list on the topic. These advocates see mind uploading as a medical procedure which could eventually save countless lives.

Many transhumanists look forward to the development and deployment of mind uploading technology, with transhumanists such as Nick Bostrom predicting that it will become possible within the 21st century due to technological trends such as Moore's law.

Michio Kaku, in collaboration with Science, hosted a documentary, Sci Fi Science: Physics of the Impossible, based on his book Physics of the Impossible. Episode four, titled "How to Teleport", mentions that mind uploading via techniques such as quantum entanglement and whole brain emulation using an advanced MRI machine may enable people to be transported vast distances at near light-speed.

The book Beyond Humanity: CyberEvolution and Future Minds by Gregory S. Paul & Earl D. Cox, is about the eventual (and, to the authors, almost inevitable) evolution of computers into sentient beings, but also deals with human mind transfer. Richard Doyle's Wetwares: Experiments in PostVital Living deals extensively with uploading from the perspective of distributed embodiment, arguing for example that humans are currently part of the "artificial life phenotype". Doyle's vision reverses the polarity on uploading, with artificial life forms such as uploads actively seeking out biological embodiment as part of their reproductive strategy.

In fiction

Mind uploading—transferring an individual's personality to a computer—appears in several works of science fiction. It is distinct from the concept of transferring a consciousness from one human body to another. It is sometimes applied to a single person and other times to an entire society. Recurring themes in these stories include whether the computerized mind is truly conscious, and if so, whether identity is preserved. It is a common feature of the cyberpunk subgenre, sometimes taking the form of digital immortality.

Pythagoras

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