Search This Blog

Saturday, February 1, 2020

Sadomasochism

From Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Sadomasochism

Joe Shuster (1950s), co-creator of Superman, from Nights of Horror
 
A male dominant whipping a female submissive while another woman watches (Paris, 1930)

Sadomasochism (/ˌsdˈmæsəkɪzəm/ SAY-doh-MASS-ə-kiz-əm) is the giving or receiving of pleasure from acts involving the receipt or infliction of pain or humiliation. Practitioners of sadomasochism may seek sexual gratification from their acts. While the terms sadist and masochist refer respectively to one who enjoys giving and receiving pain, practitioners of sadomasochism may switch between activity and passivity. 

The word sadomasochism is a portmanteau of the words sadism (/ˈsdɪzəm/) and masochism. The abbreviation S&M is often used for Sadomasochism (or Sadism & Masochism), although practitioners themselves normally remove the ampersand and use the acronym S-M or SM or S/M when written throughout the literature. Sadomasochism is not considered a clinical paraphilia unless such practices lead to clinically significant distress or impairment for a diagnosis. Similarly, sexual sadism within the context of mutual consent, generally known under the heading BDSM, is distinguished from non-consensual acts of sexual violence or aggression.

Definition and etymology

Portrait of Marquis de Sade by Charles-Amédée-Philippe van Loo (1761)
 
The term sadomasochism is used in a variety of different ways. It can refer to cruel individuals or those who brought misfortunes onto themselves and psychiatrists define it as pathological. However, recent research suggests that sadomasochism is mostly simply a sexual interest, and not a pathological symptom of past abuse, or a sexual problem, and that people with sadomasochistic sexual interest are in general neither damaged nor dangerous.

The two words incorporated into this compound, "sadism" and "masochism", were originally derived from the names of two authors. The term "Sadism" has its origin in the name of the Marquis de Sade (1740–1814), who not only practiced sexual sadism, but also wrote novels about these practices, of which the best known is Justine. "Masochism" is named after Leopold von Sacher-Masoch, who wrote novels expressing his masochistic fantasies. These terms were first selected for identifying human behavioural phenomena and for the classification of psychological illnesses or deviant behaviour. The German psychiatrist Richard von Krafft-Ebing introduced the terms "Sadism" and "Masochism"' into medical terminology in his work Neue Forschungen auf dem Gebiet der Psychopathia sexualis ("New research in the area of Psychopathology of Sex") in 1890.

In 1905, Sigmund Freud described sadism and masochism in his Drei Abhandlungen zur Sexualtheorie ("Three papers on Sexual Theory") as stemming from aberrant psychological development from early childhood. He also laid the groundwork for the widely accepted medical perspective on the subject in the following decades. This led to the first compound usage of the terminology in Sado-Masochism (Loureiroian "Sado-Masochismus") by the Viennese Psychoanalyst Isidor Isaak Sadger in his work Über den sado-masochistischen Komplex ("Regarding the sadomasochistic complex") in 1913.

In the later 20th century, BDSM activists have protested against these ideas, because, they argue, they are based on the philosophies of the two psychiatrists, Freud and Krafft-Ebing, whose theories were built on the assumption of psychopathology and their observations of psychiatric patients. The DSM nomenclature referring to sexual psychopathology has been criticized as lacking scientific veracity, and advocates of sadomasochism have sought to separate themselves from psychiatric theory by the adoption of the term BDSM instead of the common psychological abbreviation, "S&M".[citation needed] However, the term BDSM also includes B&D (bondage and discipline), D/s (dominance and submission), and S&M (sadism and masochism). The terms bondage and discipline usually refer to the use of either physical or psychological restraint or punishment, and sometimes involves sexual role playing, including the use of costumes.

Autosadism is inflicting of pain or humiliation on oneself. The photo shows pornographic actress Felicia Fox pouring hot wax over herself in front of an audience (U.S. 2005). Her nipples and genitals are also clamped.
 
In contrast to frameworks seeking to explain sadomasochism through psychological, psychoanalytic, medical or forensic approaches, which seek to categorize behavior and desires, and find a root cause, Romana Byrne suggests that such practices can be seen as examples of "aesthetic sexuality", in which a founding physiological or psychological impulse is irrelevant. Rather, according to Byrne, sadism and masochism may be practiced through choice and deliberation, driven by certain aesthetic goals tied to style, pleasure, and identity, which in certain circumstances, she claims can be compared with the creation of art.

Psychology


Historical perspective

Both terms were introduced to the medical field by German psychiatrist Richard von Krafft-Ebing in his 1886 compilation of case studies Psychopathia Sexualis. Pain and physical violence are not essential in Krafft-Ebing's conception, and he defined "masochism" (German Masochismus) entirely in terms of control. Sigmund Freud, a psychoanalyst and a contemporary of Krafft-Ebing, noted that both were often found in the same individuals, and combined the two into a single dichotomous entity known as "sadomasochism" (German Sadomasochismus, often abbreviated as S&M or S/M). This observation is commonly verified in both literature and practice; many practitioners, both sadists and masochists, define themselves as switches and "switchable" — capable of taking and deriving pleasure in either role. However, French philosopher Gilles Deleuze argued that the concurrence of sadism and masochism proposed in Freud's model is the result of "careless reasoning," and should not be taken for granted.

Freud introduced the terms "primary" and "secondary" masochism. Though this idea has come under a number of interpretations, in a primary masochism the masochist undergoes a complete, rather than partial, rejection by the model or courted object (or sadist), possibly involving the model taking a rival as a preferred mate. This complete rejection is related to the death drive (Todestrieb) in Freud's psychoanalysis. In a secondary masochism, by contrast, the masochist experiences a less serious, more feigned rejection and punishment by the model. Secondary masochism, in other words, is the relatively casual version, more akin to a charade, and most commentators are quick to point out its contrivedness.

Rejection is not desired by a primary masochist in quite the same sense as the feigned rejection occurring within a mutually consensual relationship—or even where the masochist happens to be the one having actual initiative power. In Things Hidden Since the Foundation of the World, René Girard attempts to resuscitate and reinterpret Freud's distinction of primary and secondary masochism, in connection with his own philosophy.

Both Krafft-Ebing and Freud assumed that sadism in men resulted from the distortion of the aggressive component of the male sexual instinct. Masochism in men, however, was seen as a more significant aberration, contrary to the nature of male sexuality. Freud doubted that masochism in men was ever a primary tendency, and speculated that it may exist only as a transformation of sadism. Sadomasochism in women received comparatively little discussion, as it was believed that it occurred primarily in men. Both also assumed that masochism was so inherent to female sexuality that it would be difficult to distinguish as a separate inclination.

A submissive woman bound to a Saint Andrew's Cross being whipped at the Folsom Street Fair. The red marks on her body are from the whipping.
 
Havelock Ellis, in Studies in the Psychology of Sex, argued that there is no clear distinction between the aspects of sadism and masochism, and that they may be regarded as complementary emotional states. He also made the important point that sadomasochism is concerned only with pain in regard to sexual pleasure, and not in regard to cruelty, as Freud had suggested. In other words, the sadomasochist generally desires that the pain be inflicted or received in love, not in abuse, for the pleasure of either one or both participants. This mutual pleasure may even be essential for the satisfaction of those involved.

Here, Ellis touches upon the often paradoxical nature of widely reported consensual S&M practices. It is described as not simply pain to initiate pleasure, but violence—"or the simulation of involuntary violent acts"—said to express love. This irony is highly evident in the observation by many, that not only are popularly practiced sadomasochistic activities usually performed at the express request of the masochist, but that it is often the designated masochist who may direct such activities, through subtle emotional cues perceived or mutually understood and consensually recognized by the designated sadist.

In his essay Coldness and Cruelty, (originally Présentation de Sacher-Masoch, 1967) Gilles Deleuze rejects the term "sadomasochism" as artificial, especially in the context of the quintessentially modern masochistic work, Sacher-Masoch's Venus In Furs. Deleuze's counterargument is that the tendency toward masochism is based on intensified desire brought on or enhanced by the acting out of frustration at the delay of gratification. Taken to its extreme, an intolerably indefinite delay is 'rewarded' by punitive perpetual delay, manifested as unwavering coldness. The masochist derives pleasure from, as Deleuze puts it, the "Contract": the process by which he can control another individual and turn the individual into someone cold and callous. The sadist, in contrast, derives pleasure from the "Law": the unavoidable power that places one person below another. The sadist attempts to destroy the ego in an effort to unify the id and super-ego, in effect gratifying the most base desires the sadist can express while ignoring or completely suppressing the will of the ego, or of the conscience. Thus, Deleuze attempts to argue that masochism and sadism arise from such different impulses that the combination of the two terms is meaningless and misleading. A masochist's perception of their own self-subjugating sadistic desires and capacities are treated by Deleuze as reactions to prior experience of sadistic objectification. (For example, in terms of psychology, compulsively defensive appeasement of pathological guilt feelings as opposed to the volition of a strong free will.) The epilogue of Venus In Furs shows the character of Severin has become embittered by his experiment in the alleged control of masochism, and advocates instead the domination of women.

Before Deleuze, however, Sartre had presented his own theory of sadism and masochism, at which Deleuze's deconstructive argument, which took away the symmetry of the two roles, was probably directed. Because the pleasure or power in looking at the victim figures prominently in sadism and masochism, Sartre was able to link these phenomena to his famous philosophy of the "Look of the Other". Sartre argued that masochism is an attempt by the "For-itself" (consciousness) to reduce itself to nothing, becoming an object that is drowned out by the "abyss of the Other's subjectivity". By this Sartre means that, given that the "For-itself" desires to attain a point of view in which it is both subject and object, one possible strategy is to gather and intensify every feeling and posture in which the self appears as an object to be rejected, tested, and humiliated; and in this way the For-itself strives toward a point of view in which there is only one subjectivity in the relationship, which would be both that of the abuser and the abused. Conversely, Sartre held sadism to be the effort to annihilate the subjectivity of the victim. That means that the sadist is exhilarated by the emotional distress of the victim because they seek a subjectivity that views the victim as both subject and object.

This argument may appear stronger if it is understood that this "Look of the Other" theory is either only an aspect of the faculties of desire, or somehow its primary faculty. This does not account for the turn that Deleuze took for his own theory of these matters, but the premise of "desire as 'Look'" is associated with theoretical distinctions always detracted by Deleuze, in what he regarded as its essential error to recognize "desire as lack"—which he identified in the philosophical temperament of Plato, Socrates, and Lacan. For Deleuze, insofar as desire is a lack it is reducible to the "Look".

Finally, after Deleuze, René Girard included his account of sado-masochism in Things Hidden Since the Foundation of The World (1978), making the chapter on masochism a coherent part of his theory of mimetic desire. In this view of sado-masochism, the violence of the practices are an expression of a peripheral rivalry that has developed around the actual love-object. There is clearly a similarity to Deleuze, since both in the violence surrounding the memory of mimetic crisis and its avoidance, and in the resistance to affection that is focused on by Deleuze, there is an understanding of the value of the love object in terms of the processes of its valuation, acquisition and the test it imposes on the suitor.

S&M may involve painful acts such as cock and ball torture. Image shows a dominatrix, holding a bound man's penis, applying electricity to his balls at the Folsom Street Fair.

Modern psychology

There are a number of reasons commonly given for why a sadomasochist finds the practice of S&M enjoyable, and the answer is largely dependent on the individual. For some, taking on a role of compliance or helplessness offers a form of therapeutic escape; from the stresses of life, from responsibility, or from guilt. For others, being under the power of a strong, controlling presence may evoke the feelings of safety and protection associated with childhood. They likewise may derive satisfaction from earning the approval of that figure. A sadist, on the other hand, may enjoy the feeling of power and authority that comes from playing the dominant role, or receive pleasure vicariously through the suffering of the masochist. It is poorly understood, though, what ultimately connects these emotional experiences to sexual gratification, or how that connection initially forms. Dr. Joseph Merlino, author and psychiatry adviser to the New York Daily News, said in an interview that a sadomasochistic relationship, as long as it is consensual, is not a psychological problem: 


It is usually agreed on by psychologists that experiences during early sexual development can have a profound effect on the character of sexuality later in life. Sadomasochistic desires, however, seem to form at a variety of ages. Some individuals report having had them before puberty, while others do not discover them until well into adulthood. According to one study, the majority of male sadomasochists (53%) developed their interest before the age of 15, while the majority of females (78%) developed their interest afterwards (Breslow, Evans, and Langley 1985). The prevalence of sadomasochism within the general population is unknown. Despite female sadists being less visible than males, some surveys have resulted in comparable amounts of sadistic fantasies between females and males. The results of such studies demonstrate that one's sex does not determine preference for sadism.

Medical and forensic classification


Medical categorization


BDSM

Medical opinion of sadomasochistic activities has changed over time. The classification of sadism and masochism in the Diagnostic and Statistical Manual of Mental Disorders (DSM) has always been separate; sadism was included in the DSM-I in 1952, while masochism was added in the DSM-II in 1968. Contemporary psychology continues to identify sadism and masochism separately, and categorizes them as either practised as a life style, or as a medical condition.

The current version of the American Psychiatric Association's manual, DSM-5, excludes consensual BDSM from diagnosis as a disorder when the sexual interests cause no harm or distress.

The DSM‐5 Sexual sadism disorder, however, do not distinguish between arousal patterns involving consenting and non‐consenting others.

ICD

June 18, 2018 WHO, The World Health Organization, published ICD-11, and Sadomasochism, together with Fetishism and Transvestic Fetishism, are now removed as psychiatric diagnoses. Moreover, discrimination of fetish- and BDSM individuals is considered inconsistent with human rights principles endorsed by the United Nations and The World Health Organization.
The classifications of sexual disorders reflect contemporary sexual norms and have moved from a model of pathologization or criminalization of non-reproductive sexual behaviors to a model which reflects sexual well-being and pathologizes the absence or limitation of consent in sexual relations.

The ICD-11 classification, contrary to ICD-10 and DSM-5, clearly distinguishes consensual sadomasochistic behaviours (BDSM) that do not involve inherent harm to self or others, from harmful violence on non‐consenting persons (Coercive sexual sadism disorder).

In this regard, ”ICD-11 go further than the changes made for DSM-5 … in the removal of disorders diagnosed based on consenting behaviors that are not in and of themselves associated with distress or functional impairment.” 

In Europe, an organization called ReviseF65 has worked to remove sadomasochism from the ICD. On commission from the WHO ICD-11 Working Group on Sexual Disorders and Sexual Health, ReviseF65 in 2009 and 2011 delivered reports documenting that sadomasochism and sexual violence are two different phenomena. The report concluded that the Sadomasochism diagnosis were outdated, non scientific, and stigmatizing. In 1995, Denmark became the first European Union country to have completely removed sadomasochism from its national classification of diseases. This was followed by Sweden in 2009, Norway in 2010, Finland in 2011 and Iceland in 2015.

"Based on advances in research and clinical practice, and major shifts in social attitudes and in relevant policies, laws, and human rights standards”, the World Health Organization June 18, 2018, removed Fetishism, Transvestic Fetishism and Sadomasochism as psychiatric diagnoses.

The ICD-11 classification consider Sadomasochism as a variant in sexual arousal and private behaviour without appreciable public health impact and for which treatment is neither indicated nor sought.” 

Further the ICD-11 guidelines ”respect the rights of individuals whose atypical sexual behavior is consensual and not harmful.” 

WHO’s ICD-11 Working Group admits that psychiatric diagnoses has been abused to harass, silence, or imprison sadomasochists. Labeling them as such may create harm, convey social judgment, and exacerbate existing stigma and violence to individuals so labeled.
According to ICD-11, psychiatric diagnoses can no longer be used to discriminate against BDSM people and fetishists.

Recent surveys on the spread of BDSM fantasies and practices show strong variations in the range of their results. Nonetheless, researchers assume that 5 to 25 percent of the population practices sexual behavior related to pain or dominance and submission. The population with related fantasies is believed to be even larger.

Forensic classification

According to Anil Aggrawal, in forensic science, levels of sexual sadism and masochism are classified as follows:
Sexual masochists:
  • Class I: Bothered by, but not seeking out, fantasies. May be preponderantly sadists with minimal masochistic tendencies or non-sadomasochistic with minimal masochistic tendencies
  • Class II: Equal mix of sadistic and masochistic tendencies. Like to receive pain but also like to be dominant partner (in this case, sadists). Sexual orgasm is achieved without pain or humiliation.
  • Class III: Masochists with minimal to no sadistic tendencies. Preference for pain or humiliation (which facilitates orgasm), but not necessary to orgasm. Capable of romantic attachment.
  • Class IV: Exclusive masochists (i.e. cannot form typical romantic relationships, cannot achieve orgasm without pain or humiliation).
Sexual sadists:
  • Class I: Bothered by sexual fantasies but do not act on them.
  • Class II: Act on sadistic urges with consenting sexual partners (masochists or otherwise). Categorization as leptosadism is outdated.
  • Class III: Act on sadistic urges with non-consenting victims, but do not seriously injure or kill. May coincide with sadistic rapists.
  • Class IV: Only act with non-consenting victims and will seriously injure or kill them.
The difference between I–II and III–IV is consent.

BDSM

Woman's buttocks turned red as a result of a paddling
 
Play piercing on a woman's back using multiple needles
 
Pussy torture: wax play done on a bound nude woman's genitals at Wave-Gotik-Treffen festival, Germany, 2014.
 
A submissive man is consoled by his dominatrix after she has made his back bloody by beating.
 
The term BDSM is commonly used to describe consensual activities that contain sadistic and masochistic elements. Masochists tend to be very specific about the types of pain they enjoy, preferring some and disliking others. Many behaviors such as spanking, tickling, and love-bites contain elements of sadomasochism. Even if both parties legally consent to such acts this may not be accepted as a defense against criminal charges. Very few jurisdictions will permit consent as a legitimate defense if serious bodily injuries are caused. It has been argued that in many countries, the law disregards the sexual nature of sadomasochism - or the fact that participants enter these relationships voluntarily because they enjoy the experience. Instead, the criminal justice system focuses on what it views as dangerous or violent behavior. What this essentially means is that instead of attempting to understand and accommodate for voluntary sadomasochism, the law typically views these incidences as cases of assault. This can be seen with the well-known case in Great Britain, where 15 men were trialed for a range of offences relating to sadomasochism. Samois, the earliest known lesbian S/M organization in the United States, was founded in San Francisco in 1978.

Harsh acts of S&M may include consensual torture of the sensitive parts of body, such as cock and ball torture for males, and breast torture and pussy torture for females. Acts common for both genders may include ass torture (ex. using speculum), face torture (ex. nose torture), etc. In extreme cases, sadism and masochism can include fantasies, sexual urges or behavior which cause observably significant distress or impairment in social, occupational, or other important areas of functioning, to the point that they can be considered part of a mental disorder. However, this is widely considered to be rare, as psychiatrists now regard such behaviors as clinically aberrant only if they are identifiable as symptoms or associated with other problems such as personality disorder or neurosis. There is some controversy in the psychology professions regarding a personality disorder referred to alternately as "self-defeating personality disorder" or "masochistic personality disorder", where masochistic behavior may not be in relation to other diagnosed mental disease. Ernulf and Innala (1995) observed discussions among individuals with such interests, one of whom described the goal of hyperdominance.

The Fifty Shades trilogy is a series of very popular erotic romance novels by E. L. James which involve S/M. These have been criticized for their inaccurate and harmful depiction of S/M. Their film adaptations have been similarly criticized.

Pain and pleasure

From Wikipedia, the free encyclopedia

Some philosophers, such as Jeremy Bentham, Baruch Spinoza, and Descartes, have hypothesized that the feelings of pain (or suffering) and pleasure are part of a continuum.

There is strong evidence of biological connections between the neurochemical pathways used for the perception of both pain and pleasure, as well as other psychological rewards.

Perception of pain


Sensory input system

From a stimulus-response perspective, the perception of physical pain starts with the nociceptors, a type of physiological receptor that transmits neural signals to the brain when activated. These receptors are commonly found in the skin, membranes, deep fascias, mucosa, connective tissues of visceral organs, ligaments and articular capsules, muscles, tendons, periosteum, and arterial vessels. Once stimuli are received, the various afferent action potentials are triggered and pass along various fibers and axons of these nociceptive nerve cells into the dorsal horn of the spinal cord through the dorsal roots. A neuroanatomical review of the pain pathway, "Afferent pain pathways" by Almeida, describes various specific nociceptive pathways of the spinal cord: spinothalamic tract, spinoreticular tract, spinomesencephalic tract, spinoparabrachial tract, spinohypothalamic tract, spinocervical tract, postsynaptic pathway of the spinal column.

Neural coding and modulation

Activity in many parts of the brain is associated with pain perception. Some of the known parts for the ascending pathway include the thalamus, hypothalamus, midbrain, lentiform nucleus, somatosensory cortices, insular, prefrontal, anterior and parietal cingulum. Then, there are also the descending pathways for the modulation of pain sensation. One of the brainstem regions responsible for this is the periaqueductal gray of the midbrain, which both relieves pain by behavior as well as inhibits the activity of the nociceptive neurons in the dorsal horn of the spinal cord. Other brainstem sites, such as the parabrachial nucleus, the dorsal raphe, locus coeruleus, and the medullary reticular formation also mediate pain relief and use many different neurotransmitters to either facilitate or inhibit activity of the neurons in the dorsal horn. These neurotransmitters include noradrenaline, serotonin, dopamine, histamine, and acetylcholine

Perception of pleasure

Pleasure can be considered from many different perspectives, from physiological (such as the hedonic hotspots that are activated during the experience) to psychological (such as the study of behavioral responses towards reward). Pleasure has also often been compared to, or even defined by many neuroscientists as, a form of alleviation of pain.

Neural coding and modulation

Pleasure has been studied in the systems of taste, olfaction, auditory (musical), visual (art), and sexual activity. Well known hedonic hotspots involved in the processing of pleasure include the nucleus accumbens, posterior ventral pallidum, amygdala, other cortical and subcortical regions. The prefrontal and limbic regions of the neocortex, particularly the orbitofrontal region of the prefrontal cortex, anterior cingulate cortex, and the insular cortex have all been suggested to be pleasure causing substrates in the brain.

Psychology of pain and pleasure (reward-punishment system)

One approach to evaluating the relationship between pain and pleasure is to consider these two systems as a reward-punishment based system. When pleasure is perceived, one associates it with reward. When pain is perceived, one associates with punishment. Evolutionarily, this makes sense, because often, actions that result in pleasure or chemicals that induce pleasure work towards restoring homeostasis in the body. For example, when the body is hungry, the pleasure of rewarding food to one-self restores the body back to a balanced state of replenished energy. Like so, this can also be applied to pain, because the ability to perceive pain enhances both avoidance and defensive mechanisms that were, and still are, necessary for survival.

Opioid and dopamine systems in pain and pleasure

The neural systems to be explored when trying to look for a neurochemical relationship between pain and pleasure are the opioid and dopamine systems. The opioid system is responsible for the actual experience of the sensation, whereas the dopamine system is responsible for the anticipation or expectation of the experience. Opioids work in the modulation of pleasure or pain relief by either blocking neurotransmitter release or by hyperpolarizing neurons by opening up a potassium channel which effectively temporarily blocks the neuron.

Pain and pleasure on a continuum

Arguments for pain and pleasure on a continuum

It has been suggested as early as 4th century BC that pain and pleasure occurs on a continuum. Aristotle claims this antagonistic relationship in his Rhetoric:
"We may lay it down that Pleasure is a movement, a movement by which the soul as a whole is consciously brought into its normal state of being; and that Pain is the opposite."
He describes pain and pleasure very much like a push-pull concept; human beings will move towards something that causes pleasure and will move away from something that causes pain.

Common neuroanatomy

On an anatomical level, it can be shown the source for the modulation of both pain and pleasure originates from neurons in the same locations, including the amygdala, the pallidum, and the nucleus accumbens. Not only have Leknes and Tracey, two leading neuroscientists in the study of pain and pleasure, concluded that pain and reward processing involve many of the same regions of the brain, but also that the functional relationship lies in that pain decreases pleasure and rewards increase analgesia, which is the relief from pain.

Arguments against pain and pleasure on a continuum


Asymmetry between pain and pleasure

Thomas Szasz, the late Professor of Psychiatry Emeritus at the State University of New York Health Science Center in Syracuse, New York, explored how pain and pleasure are not opposites ends of a spectrum in his 1957 book, "Pain and Pleasure -a study of bodily feelings".

Szasz notes that although we often refer to pain and pleasure as opposites in such a way, that this is incorrect; we have receptors for pain, but none in the same way for pleasure; and so it makes sense to ask "where is the pain?" but not "where is the pleasure?". With this vantage point established, the author delves into the topics of metaphorical pain and of legitimacy, of power relations, and of communications, and of myriad others.

Evolutionary hypotheses for the relationship between pain and pleasure

Whether or not pain and pleasure are indeed on a continuum, it still remains scientifically supported that parts of the neural pathways for the two perceptions overlap. There is also scientific evidence that one may have opposing effects on the other. So why would it be evolutionarily advantageous to human beings to develop a relationship between the two perceptions at all?

South African neuroscientists presented evidence that there was a physiological link on a continuum between pain and pleasure in 1980. First, the Neuroscientists, Gillman and Lichtigfeld demonstrated that there were two endogenous endorphin systems, one pain producing and the other pain relieving. A short time later they showed that these two systems might also be involved in addiction, which is initially pursued, presumably for the pleasure generating or pain relieving actions of the addictive substance. Soon after they provided evidence that the endorphins system was involved in sexual pleasure.

Dr. Kringelbach suggests that this relationship between pain and pleasure would be evolutionarily efficient, because it was necessary to know whether or not to avoid or approach something for survival. According to Dr. Norman Doidge, the brain is limited in the sense that it tends to focus on the most used pathways. Therefore, having a common pathway for pain and pleasure could have simplified the way in which human beings have interacted with the environment (Dr. Morten Kringelbach, personal communication, October 24, 2011).

Leknes and Tracey offer two theoretical perspectives to why a relationship could be evolutionarily advantageous.

Opponent process theory

The opponent-process theory is a model that views two components as being pairs that are opposite to each other, such that if one component is experienced, the other component will be repressed. Therefore, an increase in pain should bring about a decrease in pleasure, and a decrease in pain should bring about an increase in pleasure or pain relief. This simple model serves the purpose of explaining the evolutionarily significant role of homeostasis in this relationship. This is evident since both seeking pleasure and avoiding pain are important for survival. Leknes and Tracey provide an example:
"In the face of a large food reward, which can only be obtained at the cost of a small amount of pain, for instance, it would be beneficial if the pleasurable food reduced pain unpleasantness."
They then suggest that perhaps a common currency for which human beings determine the importance of the motivation for each perception can allow them to be weighed against each other in order to make a decision best for survival.

Motivation-decision model

The Motivation-Decision Model, suggested by Fields, is centered around the concept that decision processes are driven by motivations of highest priority. The model predicts that in the case that there is anything more important than pain for survival will cause the human body to mediate pain by activating the descending pain modulation system described earlier. Thus, it is suggested that human beings have developed the unconscious ability to endure pain or sometimes, even relieve pain if it can be more important for survival to gain a larger reward. It may have been more advantageous to link the pain and pleasure perceptions together to be able to reduce pain to gain a reward necessary for fitness, such as childbirth. Like the opponent-process theory, if the body can induce pleasure or pain relief to decrease the effect of pain, it would allow human beings to be able to make the best evolutionary decisions for survival.

Clinical applications


Related diseases

The following neurological and/or mental diseases have been linked to forms of pain or anhedonia: schizophrenia, depression, addiction, cluster headache, chronic pain.

Animal trials

A great deal of what is known about pain and pleasure today primarily comes from studies conducted with rats and primates.

Insertion of electrode during Deep Brain Stimulation surgery using a stereotactic frame
 

Deep brain stimulation

Deep brain stimulation involves the electrical stimulation of deep brain structures by electrodes implanted into the brain. The effects of this neurosurgery has been studied in patients with Parkinson's disease, tremors, dystonia, epilepsy, depression, obsessive-compulsive disorder, Tourette's syndrome, cluster headache and chronic pain. A fine electrode is inserted into the targeted area of the brain and secured to the skull. This is attached to a pulse generator which is implanted elsewhere on the body under the skin. The surgeon then turns the frequency of the electrode to the voltage and frequency desired. Deep brain stimulation has been shown in several studies to both induce pleasure or even addiction as well as ameliorate pain. For chronic pain, lower frequencies (about 5–50 Hz) have produced analgesic effects, whereas higher frequencies (about 120–180 Hz) have alleviated or stopped pyramidal tremors in Parkinson's patients.

There is still further research necessary into how and why exactly DBS works. However, by understanding the relationship between pleasure and pain, procedures like these can be used to treat patients suffering from a high intensity or longevity of pain. So far, DBS has been recognized as a treatment for Parkinson's disease, tremors, and dystonia by the Food and Drug Administration (FDA).

Friday, January 31, 2020

Wirehead (science fiction)

From Wikipedia, the free encyclopedia
 
The wires of an implanted deep brain stimulation (DBS) device are visible as white lines in an X-ray of the skull. Large white areas around maxilla and mandible are metal dentures and are unrelated to the DBS device
 
Artist's conception of two DBS wires/electrodes in the human brain.
 
Enlarged artist's conception of two DBS wires/electrodes with multiple contact points in each wire.

Wirehead is a term used in science fiction works to denote different kinds of interaction between people and technology. The typical wirehead idea is that of a wire going into a human's brain and safe amounts of electricity applied to the wire-conductor to directly interact with the brain, or the specific "pleasure centers" of the brain.

Written fiction


Known Space stories

In Larry Niven's Known Space stories, a wirehead is someone who has been fitted with an electronic brain implant (called a "droud" in the stories) to stimulate the pleasure centres of their brain. In the Known Space universe, wireheading is the most addictive habit known (Louis Wu is the only given example of a recovered addict), and wireheads usually die from neglecting themselves in favour of the ceaseless pleasure. Wireheading is so powerful and easy that it becomes an evolutionary pressure, selecting against that portion of Known Space humanity without self-control. Also in this science fiction there is a device called a "tasp" (similar to transcranial magnetic stimulation) that does not need a surgical implant; the pleasure center of a person's brain is found and remotely stimulated (considered a violation without seeking the person's consent beforehand), an important device in the Ringworld novels

A wirehead's death is central to Niven's Gil 'the Arm' Hamilton story, "Death by Ecstasy", published by Galaxy Magazine in 1969, and a main character in the book Ringworld Engineers is a former wirehead trying to quit. 

Niven's stories explain wireheads by mentioning a study in which experimental rats had electrodes implanted at strategic locations in their brains, so that an applied current would induce a pleasant feeling. If the current could be obtained any time the rats pushed the lever, they would use it over and over, ignoring food and physical necessities until they died. Such experiments were actually conducted by James Olds and Peter Milner in the 1950s, first discovering the locations of such areas, and later showing extremes to which rats would go to obtain the stimulus again.

Mindkiller

Mindkiller, a 1982 sci-fi novel by Spider Robinson set in the late 1980s, explores the social implications of technologies to manipulate the brain, beginning with wireheading, the use of electric current to stimulate the pleasure center of the brain in order to achieve a narcotic high.

Shaper/Mechanist stories

In the Shaper/Mechanist stories of Bruce Sterling, "wirehead" is the Mechanist term for a human who has given up corporeal existence and become an infomorph

The Terminal Man

In The Terminal Man (1972) by Michael Crichton, forty electrodes are implanted into the brain of the character Harold Franklin "Harry" Benson to control seizures. However, his pleasure center is also stimulated, and his body begins producing more seizures to receive the pleasurable sensation.

Film and Television


Brainstorm

In the 1983 film Brainstorm a wireless brain connection machine is made. A character named Hal Abramson abuses the device with a signal of never ending sexual pleasure. 

The Outer Limits 1995 TV series


In The Outer Limits episode named "Awakening", season three, episode 10, a neurologically impaired woman receives a brain implant to help her become more like a typical human.

The Centurions (animated series)

In episode 41, "Zone Dancer" of the 1986The Centurions animated series, the lead character Crystal Kane is accused of "Zone Dancing" (the series' term for computer hacking) and seen using a "droud" to interface her brain with computer networks in what is probably the first animated representation of cyberspace and virtual reality. The story, written by Michael Reaves, weaves a future noir tale of cyberpunk espionage, cloning and private-eye procedural, all set in the universe of the animated series and makes copious references to William Gibson's Neuromancer. There is even a Zone Dancer named Gibson and, in what may be an homage to Larry Niven's Louis Wu, a cyberneticst named Dr. Wu.

 

House

The title character of the television show House is a physician who suffers from chronic pain. In the episode "Half-Wit", House seeks a medical procedure to stimulate the "pleasure center" of his brain.

Non-fictional examples

In 1924, Dr Hans Berger succeeded in recording the first human electroencephalogram (EEG).

Dr William Grey Walter wrote a paper in 1938 on the EEG ELECTRO-ENCEPHALOGRAPHY, the measurement of electrical activity in the brain using wires of different types.

Dr Wilder Penfield and Dr Herbert Jasper stimulated the brain to find the places where the patients seizures were coming from.

Dr Reginald Bickford in 1944 is reported to have recorded the EEG of psychiatric patients who had had lobotomies.

After the 1949 Nobel prize was awarded to António Egas Moniz for the procedure of lobotomy, a more precise method of destroying brain structures was pursued. In the year 1955 the placing of wires into the mentally ill patient was performed by Dr C.W. Sem Jacobsen. Dr S. Sherwood also performed wire implantation. In the year 1961 five patients had wires implanted to treat their mental illness and a precision leucotomy was performed for favorable results.

In the 1950s there are several doctors who continued to place wires into the human brain. They worked on epileptic and psychiatric patients brains.

Silver and copper electrodes were found to be toxic to brain tissue. Electrodes are encapsulated by fibrous growths as a inflammatory bodily response to a foreign object.

Dr. J. Lawrence Pool wrote "Effects of Electrical Stimulation of the Human Cerebellar Cortex" and described stimulation of a patients brain. April 1943.

Dr. B S Nashold is used as a reference in many medical writings.

Dr. Robert Galbraith Heath placed electrodes in his subjects' brains in the 1950s to try to treat their mental illness. Dr. Heath wrote several papers on his work of stimulating the various regions of the brain.

Dr. Carl Wilhelm Sem-Jacobsen "Depth-electrographic stimulation of the human brain and behavior; from fourteen years of studies and treatment of Parkinson's disease and mental disorders with implanted electrodes,"

José Manuel Rodriguez Delgado also placed electrodes in his patients' brains. He called his inventions a "stimoceiver" and a "chemitrode".
  • 1953 "Induced paroxysmal electrical activity in man recorded simultaneously through subcortical and scalp electrodes"
  • 1955: The patient, a 27-year-old housewife "Stimulation of the amygdaloid nucleus in a schizophrenic patient" by Robert Galbraith Heath
  • 1963: "Electrical self-stimulation of the brain in man" by Robert Galbraith Heath.
  • 1972: A 24-year-old man with temporal lobe epilepsy, identified as patient "B-19". "He was permitted to wear the device for 3 hours at a time: on one occasion he stimulated his septal region 1,200 times, on another occasion 1,500 times, and on a third occasion 900 times. He protested each time the unit was taken from him, pleading to self-stimulate just a few more times..."
  • 1986: A 48-year-old woman with chronic pain. "The patient self-stimulated throughout the day, neglecting personal hygiene and family commitments."
  • 1986: To treat patients suffering from pain due to cancer Dr Young and Dr Brechner made a study of electrical stimulation of the brain.
  • 2012: Cathy Hutchinson who is paralyzed had one hundred electrodes placed on the surface of her brain. With this brain–computer interface she is able to control a variety of devices.
  • 2013: A 49-year-old, right-handed woman had multiple electrodes placed in her brain for epilepsy. She reported an orgasmic ecstasy following the stimulation of the left hippocampus.
  • 2016: The New England Journal of Medicine describes a growing do-it-yourself (DIY) medical engineering culture that includes DIY transcranial direct-current stimulation
  • 2019:"Electronic implants studied for treatment of drug addiction" In China, doctors are treating addiction with brain implants aimed to stimulate the nucleus accumbens.

Brain implant

From Wikipedia, the free encyclopedia
 
A laboratory rat with a brain implant used to record neuronal activity
 
Brain implants, often referred to as neural implants, are technological devices that connect directly to a biological subject's brain – usually placed on the surface of the brain, or attached to the brain's cortex. A common purpose of modern brain implants and the focus of much current research is establishing a biomedical prosthesis circumventing areas in the brain that have become dysfunctional after a stroke or other head injuries. This includes sensory substitution, e.g., in vision. Other brain implants are used in animal experiments simply to record brain activity for scientific reasons. Some brain implants involve creating interfaces between neural systems and computer chips. This work is part of a wider research field called brain-computer interfaces. (Brain-computer interface research also includes technology such as EEG arrays that allow interface between mind and machine but do not require direct implantation of a device.) 

Neural implants such as deep brain stimulation and Vagus nerve stimulation are increasingly becoming routine for patients with Parkinson's disease and clinical depression, respectively.

Purpose

Brain implants electrically stimulate, block or record (or both record and stimulate simultaneously) signals from single neurons or groups of neurons (biological neural networks) in the brain. The blocking technique is called intra-abdominal vagal blocking. This can only be done where the functional associations of these neurons are approximately known. Because of the complexity of neural processing and the lack of access to action potential related signals using neuroimaging techniques, the application of brain implants has been seriously limited until recent advances in neurophysiology and computer processing power. Much research is also being done on the surface chemistry of neural implants in effort to design products which minimize all negative effects that an active implant can have on the brain, and that the body can have on the function of the implant. Researchers are also exploring a range of delivery systems, such as using veins, to deliver these implants without brain surgery; by leaving the skull sealed shut, patients could receive their neural implants without running as great a risk of seizures, strokes, or permanent neural impairments, all of which can be caused by open-brain surgery.

Research and applications

Research in sensory substitution has made significant progress since 1970. Especially in vision, due to the knowledge of the working of the visual system, eye implants (often involving some brain implants or monitoring) have been applied with demonstrated success. For hearing, cochlear implants are used to stimulate the auditory nerve directly. The vestibulocochlear nerve is part of the peripheral nervous system, but the interface is similar to that of true brain implants.

Multiple projects have demonstrated success at recording from the brains of animals for long periods of time. As early as 1976, researchers at the NIH led by Edward Schmidt made action potential recordings of signals from rhesus monkey motor cortexes using immovable "hatpin" electrodes, including recording from single neurons for over 30 days, and consistent recordings for greater than three years from the best electrodes. 

The "hatpin" electrodes were made of pure iridium and insulated with Parylene, materials that are currently used in the Cyberkinetics implementation of the Utah array. These same electrodes, or derivations thereof using the same biocompatible electrode materials, are currently used in visual prosthetics laboratories, laboratories studying the neural basis of learning, and motor prosthetics approaches other than the Cyberkinetics probes.

Schematic of the "Utah" Electrode Array
 
Other laboratory groups produce their own implants to provide unique capabilities not available from the commercial products.

Breakthroughs include studies of the process of functional brain re-wiring throughout the learning of a sensory discrimination, control of physical devices by rat brains, monkeys over robotic arms, remote control of mechanical devices by monkeys and humans, remote control over the movements of roaches, the first reported use of the Utah Array in a human for bidirectional signalling. Currently a number of groups are conducting preliminary motor prosthetic implants in humans. These studies are presently limited to several months by the longevity of the implants. The array now forms the sensor component of the Braingate

Much research is also being done on the surface chemistry of neural implants in effort to design products which minimize all negative effects that an active implant can have on the brain, and that the body can have on the function of the implant. 

Another type of neural implant that is being experimented on is Prosthetic Neuronal Memory Silicon Chips, which imitate the signal processing done by functioning neurons that allows peoples' brains to create long-term memories. 

In 2016, scientists at the University of Illinois at Urbana–Champaign announced development of tiny brain sensors for use postoperative monitoring, which melt away when they are no longer needed.

In 2016, scientists out of the University of Melbourne published proof-of-concept data related to a discovery for Stentrode, a device implanted via the jugular vein, demonstrated the potential for a neural recording device to be engineered onto a stent and implanted into a blood vessel in the brain, without the need for open brain surgery. The technology platform is being developed for patients with paralysis to facilitate control of external devices such as robotic limbs, computers and exoskeletons by translating brain activity. It may ultimately help diagnose and treat a range of brain pathologies, such as epilepsy and Parkinson’s disease.

Military

DARPA has announced its interest in developing "cyborg insects" to transmit data from sensors implanted into the insect during the pupal stage. The insect's motion would be controlled from a Micro-Electro-Mechanical 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 were 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) Micro-electronic mechanical systems (MEMS) conference in Italy, researchers demonstrated the first "wireless" flying-beetle cyborg. Engineers at the University of California at Berkeley 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 2012, DARPA provided seed funding to Dr. Thomas Oxley, a neurointerventionist at Mount Sinai Hospital in New York City, for a technology that became known as Stentrode. Oxley’s group in Australia was the only non-US-based funded by DARPA as part of the Reliable Neural Interface Technology (RE-NET) program. This technology is the first to attempt to provide neural implants through a minimally invasive surgical procedure that does not require cutting into the skull. That is, an electrode array built onto a self-expanding stent, implanted into the brain via cerebral angiography. This pathway can provide safe, easy access and capture a strong signal for a number of indications beyond addressing paralysis, and is currently in clinical trials in patients with severe paralysis seeking to regain the ability to communicate. 

In 2015 it was reported that scientists from the Perception and Recognition Neuro-technologies Laboratory at the Southern Federal University in Rostov-on-Don suggested using rats with microchips planted in their brains to detect explosive devices.

In 2016 it was reported that American engineers are developing a system that would transform locusts into "remote controlled explosive detectors" with electrodes in their brains beaming information about dangerous substances back to their operators.


Rehabilitation

Neurostimulators have been in use since 1997 to ease the symptoms of such diseases as epilepsy, Parkinson's disease, dystonia and recently depression.

Current brain implants are made from a variety of materials such as tungsten, silicon, platinum-iridium, or even stainless steel. Future brain implants may make use of more exotic materials such as nanoscale carbon fibers (nanotubes), and polycarbonate urethane.

Brain implants are also being explored by DARPA as part of the Reliable Neural-Interface Technology (RE-NET) program launched in 2010 to directly address the need for high-performance neural interfaces to control the dexterous functions made possible by DARPA’s advanced prosthetic limbs. The goal is to provide high-bandwidth, intuitive control interface for these limbs, they will not achieve their full potential to improve quality of life for wounded troops.

Historical research

In 1870, Eduard Hitzig and Gustav Fritsch demonstrated that electrical stimulation of the brains of dogs could produce movements. Robert Bartholow showed the same to be true for humans in 1874. By the start of the 20th century, Fedor Krause began to systematically map human brain areas, using patients that had undergone brain surgery.

Prominent research was conducted in the 1950s. Robert G. Heath experimented with aggressive mental patients, aiming to influence his subjects' moods through electrical stimulation.

Yale University physiologist Jose Delgado demonstrated limited control of animal and human subjects' behaviours using electronic stimulation. He invented the stimoceiver or transdermal stimulator, a device implanted in the brain to transmit electrical impulses that modify basic behaviours such as aggression or sensations of pleasure.

Delgado was later to write a popular book on mind control, called Physical Control of the Mind, where he stated: "the feasibility of remote control of activities in several species of animals has been demonstrated [...] The ultimate objective of this research is to provide an understanding of the mechanisms involved in the directional control of animals and to provide practical systems suitable for human application."

In the 1950s, the CIA also funded research into mind control techniques, through programs such as MKULTRA. Perhaps because he received funding for some research through the US Office of Naval Research, it has been suggested (but not proven) that Delgado also received backing through the CIA. He denied this claim in a 2005 article in Scientific American describing it only as a speculation by conspiracy-theorists. He stated that his research was only progressively scientifically motivated to understand how the brain works.

Recent advances in neurotechnologies and neuroimaging, along with an increased understanding of neurocircuitry, are factors contributing to the rapid rise in the use of neurostimulation therapies to treat an increasingly wide range of neurologic and psychiatric disorders. Electrical stimulation technologies are evolving after remaining fairly stagnant for the past 30 years, moving toward potential closed-loop therapeutic control systems with the ability to deliver stimulation with higher spatial resolution to provide continuous customized neuromodulation for optimal clinical outcomes.

Concerns and ethical considerations

Ethical questions raised include who are good candidates to receive neural implants and what are good and bad uses of neural implants. Whilst deep brain stimulation is increasingly becoming routine for patients with Parkinson's disease, there may be some behavioural side effects. Reports in the literature describe the possibility of apathy, hallucinations, compulsive gambling, hypersexuality, cognitive dysfunction, and depression. However, these may be temporary and related to correct placement and calibration of the stimulator and so are potentially reversible.

Some transhumanists, such as Raymond Kurzweil and Kevin Warwick, see brain implants as part of a next step for humans in progress and evolution, whereas others, especially bioconservatives, view them as unnatural, with humankind losing essential human qualities. It raises controversy similar to other forms of human enhancement. For instance, it is argued that implants would technically change people into cybernetic organisms (cyborgs). It's also expected that all research will comply to the Declaration of Helsinki. Yet further, the usual legal duties apply such as information to the person wearing implants and that the implants are voluntary, with (very) few exceptions.

Other concerns involve vulnerabilities of neural implants to cybercrime or intrusive surveillance as neural implants could be hacked, misused or misdesigned.

Sadja states that "one's private thoughts are important to protect" and doesn't consider it a good idea to just charge the government or any company with protecting them. Walter Glannon, a neuroethicist of the University of Calgary notes that "there is a risk of the microchips being hacked by third parties" and that "this could interfere with the user's intention to perform actions, violate privacy by extracting information from the chip".

Representation of a Lie group

From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Representation_of_a_Lie_group...