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Tuesday, February 17, 2015

Samsung

From Wikipedia, the free encyclopedia

Samsung
Native name
삼성
Chaebol
Industry Conglomerate
Founded 1938
Founder Lee Byung-chul
Headquarters Seoul, South Korea
Area served
Worldwide
Key people
Lee Kun-hee
(Chairman of Samsung Electronics)
Products Apparel, chemicals, consumer electronics, electronic components, medical equipment, precision instruments, semiconductors, ships, telecommunications equipment
Services Advertising, construction, entertainment, financial services, hospitality, information and communications technology services, medical services, retail
Revenue Increase US$ 327 billion (2013)[1]
Increase US$ 30.1 billion (2013)[1]
Total assets Increase US$ 100.4 billion (2013)[1]
Total equity Increase US$ 70.3 billion (2013)[1]
Number of employees
427,000 (2013)[1]
Subsidiaries Samsung Electronics
Samsung Life Insurance
Samsung Fire & Marine Insurance
Samsung Heavy Industries
Samsung C&T
Samsung SDS
Samsung Techwin
Samsung Motors(Renault-Samsung Motors(cars division)) etc.
Website Samsung.com
Samsung
Hangul 삼성
Hanja 三星
Revised Romanization Samseong
McCune–Reischauer Samsŏng

Samsung (Hangul: 삼성; hanja: 三星; Korean pronunciation: [sʰamsʰʌŋ]) is a South Korean multinational conglomerate company headquartered in Samsung Town, Seoul. It comprises numerous subsidiaries and affiliated businesses, most of them united under the Samsung brand, and is the largest South Korean chaebol (business conglomerate).

Samsung was founded by Lee Byung-chul in 1938 as a trading company. Over the next three decades, the group diversified into areas including food processing, textiles, insurance, securities and retail. Samsung entered the electronics industry in the late 1960s and the construction and shipbuilding industries in the mid-1970s; these areas would drive its subsequent growth. Following Lee's death in 1987, Samsung was separated into four business groups – Samsung Group, Shinsegae Group, CJ Group and Hansol Group. Since 1990s, Samsung has increasingly globalized its activities, and electronics, particularly mobile phones and semiconductors, have become its most important source of income.

Notable Samsung industrial subsidiaries include Samsung Electronics (the world's largest information technology company measured by 2012 revenues, and 4th in market value),[2] Samsung Heavy Industries (the world's 2nd-largest shipbuilder measured by 2010 revenues),[3] and Samsung Engineering and Samsung C&T (respectively the world's 13th and 36th-largest construction companies).[4] Other notable subsidiaries include Samsung Life Insurance (the world's 14th-largest life insurance company),[5] Samsung Everland (operator of Everland Resort, the oldest theme park in South Korea),[6] Samsung Techwin (an aerospace, surveillance and defense company) and Cheil Worldwide (the world's 15th-largest advertising agency measured by 2012 revenues).[7][8]

Samsung has a powerful influence on South Korea's economic development, politics, media and culture, and has been a major driving force behind the "Miracle on the Han River".[9][10] Its affiliate companies produce around a fifth of South Korea's total exports.[11] Samsung's revenue was equal to 17% of South Korea's $1,082 billion GDP.[12]

In 2013, Samsung began construction on building the world's largest mobile phone factory in the Thai Nguyen province of Vietnam.[13] Samsung has been able to achieve the largest market share of nearly 31% in the global smartphone segment, as of 2013.

Name

According to the founder of Samsung Group, the meaning of the Korean hanja word Samsung () is "tristar" or "three stars". The word "three" represents something "big, numerous and powerful".[14]

History

1938 to 1970


The headquarters of Sanghoes in Daegu in the late 1930s

In 1938, Lee Byung-chull (1910–1987) of a large landowning family in the Uiryeong county came to the nearby Daegu city and founded Samsung Sanghoe (삼성상회, 三星商會), a small trading company with forty employees located in Su-dong (now Ingyo-dong).[15] It dealt in groceries produced in and around the city and produced its own noodles. The company prospered and Lee moved its head office to Seoul in 1947. When the Korean War broke out, however, he was forced to leave Seoul and started a sugar refinery in Busan named Cheil Jedang. After the war, in 1954, Lee founded Cheil Mojik and built the plant in Chimsan-dong, Daegu. It was the largest woolen mill ever in the country and the company took on the aspect of a major company.

Samsung diversified into many areas and Lee sought to help establish Samsung as an industry leader in a wide range of enterprises, moving into businesses such as insurance, securities, and retail. President Park Chung Hee placed great importance on industrialization, and focused his economic development strategy on a handful of large domestic conglomerates, protecting them from competition and assisting them financially.[16]

In 1947, Cho Hong-jai (the Hyosung group’s founder) jointly invested in a new company called Samsung Mulsan Gongsa (삼성물산공사), or the Samsung Trading Corporation, with the Samsung Group founder Lee Byung-chull. The trading firm grew to become the present-day Samsung C&T Corporation. But after some years Cho and Lee separated due to differences in management between them. He wanted to get up to a 30% group share. After settlement, Samsung Group was separated into Samsung Group and Hyosung Group, Hankook Tire, and others.[17][18]

In the late 1960s, Samsung Group entered into the electronics industry. It formed several electronics-related divisions, such as Samsung Electronics Devices, Samsung Electro-Mechanics, Samsung Corning, and Samsung Semiconductor & Telecommunications, and made the facility in Suwon. Its first product was a black-and-white television set.

1970 to 1990


The SPC-1000, introduced in 1982, was Samsung's first personal computer (Korean market only) and uses an audio cassette tape to load and save data – the floppy drive was optional[19]

In 1980, Samsung acquired the Gumi-based Hanguk Jeonja Tongsin and entered the telecommunications hardware industry. Its early products were switchboards. The facility was developed into the telephone and fax manufacturing systems and became the center of Samsung's mobile phone manufacturing. They have produced over 800 million mobile phones to date.[20] The company grouped them together under Samsung Electronics in the 1980s.

After Lee, the founder's death in 1987, Samsung Group was separated into four business groups—Samsung Group, Shinsegae Group, CJ Group, and the Hansol Group.[21] Shinsegae (discount store, department store) was originally part of Samsung Group, separated in the 1990s from the Samsung Group along with CJ Group (Food/Chemicals/Entertainment/logistics) and the Hansol Group (Paper/Telecom). Today these separated groups are independent and they are not part of or connected to the Samsung Group.[22] One Hansol Group representative said, "Only people ignorant of the laws governing the business world could believe something so absurd", adding, "When Hansol separated from the Samsung Group in 1991, it severed all payment guarantees and share-holding ties with Samsung affiliates." One Hansol Group source asserted, "Hansol, Shinsegae, and CJ have been under independent management since their respective separations from the Samsung Group". One Shinsegae department store executive director said, "Shinsegae has no payment guarantees associated with the Samsung Group".[22]

In 1980s, Samsung Electronics began to invest heavily in research and development, investments that were pivotal in pushing the company to the forefront of the global electronics industry. In 1982, it built a television assembly plant in Portugal; in 1984, a plant in New York; in 1985, a plant in Tokyo; in 1987, a facility in England; and another facility in Austin, Texas, in 1996. As of 2012, Samsung has invested more than US$13 billion in the Austin facility, which operates under the name Samsung Austin Semiconductor. This makes the Austin location the largest foreign investment in Texas and one of the largest single foreign investments in the United States.[23][24]

1990 to 2000

Samsung started to rise as an international corporation in the 1990s. Samsung's construction branch was awarded a contract to build one of the two Petronas Towers in Malaysia, Taipei 101 in Taiwan and the Burj Khalifa in United Arab Emirates.[25] In 1993, Lee Kun-hee sold off ten of Samsung Group's subsidiaries, downsized the company, and merged other operations to concentrate on three industries: electronics, engineering, and chemicals. In 1996, the Samsung Group reacquired the Sungkyunkwan University foundation.

Samsung became the largest producer of memory chips in the world in 1992, and is the world's second-largest chipmaker after Intel (see Worldwide Top 20 Semiconductor Market Share Ranking Year by Year).[26] In 1995, it created its first liquid-crystal display screen. Ten years later, Samsung grew to be the world's largest manufacturer of liquid-crystal display panels. Sony, which had not invested in large-size TFT-LCDs, contacted Samsung to cooperate, and, in 2006, S-LCD was established as a joint venture between Samsung and Sony in order to provide a stable supply of LCD panels for both manufacturers. S-LCD was owned by Samsung (50% plus one share) and Sony (50% minus one share) and operates its factories and facilities in Tangjung, South Korea. As of 26 December 2011 it was announced that Samsung had acquired the stake of Sony in this joint venture.[27]

Compared to other major Korean companies, Samsung survived the 1997 Asian financial crisis relatively unharmed. However, Samsung Motor was sold to Renault at a significant loss. As of 2010, Renault Samsung is 80.1 percent owned by Renault and 19.9 percent owned by Samsung. Additionally, Samsung manufactured a range of aircraft from the 1980s to 1990s. The company was founded in 1999 as Korea Aerospace Industries (KAI), the result of merger between then three domestic major aerospace divisions of Samsung Aerospace, Daewoo Heavy Industries, and Hyundai Space and Aircraft Company. However, Samsung still manufactures aircraft engines and gas turbines. [28]

2000 to 2014


The Samsung pavilion at Expo 2012.

In 2000, Samsung opened a computer programming laboratory in Warsaw, Poland. Its work began with set-top-box technology before moving into digital TV and smartphones. As of 2011, the Warsaw base is Samsung's most important R&D center in Europe, forecast to be recruiting 400 new-hires per year by the end of 2013.[29]

In 2001, Samsung Techwin became the sole supplier of a combustor module for the Rolls-Royce Trent 900 used by the Airbus A380, the world's largest passenger airliner.[30] Samsung Techwin is also a revenue-sharing participant in the Boeing's 787 Dreamliner GEnx engine program.[31]

The prominent Samsung sign in Times Square, New York City.

In 2010, Samsung announced a ten-year growth strategy centered around five businesses.[32] One of these businesses was to be focused on biopharmaceuticals, to which the company has committed 2.1 trillion.[33]

In December 2011, Samsung Electronics sold its hard disk drive (HDD) business to Seagate.[34]

In first quarter of 2012, Samsung Electronics became the world's largest mobile phone maker by unit sales, overtaking Nokia, which had been the market leader since 1998.[35][36] On 21 August's edition of the Austin American-Statesman, Samsung confirmed plans to spend 3 to 4 billion dollars converting half of its Austin chip manufacturing plant to a more profitable chip.[37] The conversion should start in early 2013 with production on line by the end of 2013. On 14 March 2013, Samsung unveiled the Galaxy S4.

On 24 August 2012, nine American jurors ruled that Samsung had to pay Apple $1.05 billion in damages for violating six of its patents on smartphone technology. The award was still less than the $2.5 billion requested by Apple. The decision also ruled that Apple did not violate five Samsung patents cited in the case.[38] Samsung decried the decision saying that the move could harm innovation in the sector.[39] It also followed a South Korean ruling stating that both companies were guilty of infringing on each other's intellectual property.[40] In first trading after the ruling, Samsung shares on the Kospi index fell 7.7%, the largest fall since 24 October 2008, to 1,177,000 Korean won.[41] Apple then sought to ban the sales of eight Samsung phones (Galaxy S 4G, Galaxy S2 AT&T, Galaxy S2 Skyrocket, Galaxy S2 T-Mobile, Galaxy S2 Epic 4G, Galaxy S Showcase, Droid Charge and Galaxy Prevail) in the United States[42] which has been denied by the court.[43]

On 4 September 2012, Samsung announced that it plans to examine all of its Chinese suppliers for possible violations of labor policies. The company said it will carry out audits of 250 Chinese companies that are its exclusive suppliers to see if children under the age of 16 are being used in their factories.[44]

In 2013, a New Zealand news outlet reported a number of Samsung washing machines spontaneously catching on fire.[45] The corporation is expected to spend $14 billion on advertising and marketing in 2013, with publicity appearing in TV and cinema ads, on billboards, and at sports and arts events. In November 2013, the corporation was valued at $227 billion.[46]

In May of 2014, Samsung announced it will be shutting down its streaming service on 1 July 2014, also meaning the end of the Samsung Music Hub app that typically comes installed on its Android phones.[47]

On 3 September 2014, Samsung announced Gear VR, a virtual reality device in collaboration with Oculus VR and developed for the Galaxy Note 4.[48]

In October 2014, Samsung announced a $14.7 billion investment to build a chip plant in South Korea. Construction will begin next year with production beginning in 2017. The company has not yet decided the type of chips to be produced. [49]

In October 2014, Samsung also announced it would invest $560 million in the construction of a new 700,000 square metre production complex in Vietnam.[50]

Samsung plans to launch a new set of services beginning early 2015. The goal of this new suite of business offerings, dubbed Samsung 360 Services, is to become a help desk of sorts for businesses IT departments. The customizable services range from technical support to security solutions for having a Samsung employee embedded in a client's business as an on-site support manager or technology consultant.[51]

On 2 December 2014, Samsung announced it will sell Fiber Optics to U.S. speciality glass manufacturer Corning Inc.[52]

Acquisitions and attempted acquisitions

Samsung has made the following acquisitions and attempted acquisitions:[53]
Rollei – Swiss watch battle
Samsung Techwin acquired a German camera-maker Rollei in 1995. Samsung (Rollei) used its optic expertise on the crystals of a new line of 100% Swiss-made watches, designed by a team of watchmakers at Nouvelle Piquerez S.A. in Bassequort, Switzerland. Rolex's decision to fight Rollei on every front stemmed from the close resemblance between the two names and fears that its sales would suffer as a consequence. In the face of such a threat, the Geneva firm decided to confront. This was also a demonstration of the Swiss watch industry's determination to defend itself when an established brand is threatened. Rolex sees this front-line battle as vital for the entire Swiss watch industry. Rolex has succeeded in keeping Rollei out of the German market. On 11 March 1995, the Cologne District court prohibited the advertising and sale of Rollei watches on German territory.[54][55]
Fokker, a Dutch aircraft maker
Samsung lost a chance to revive its failed bid to take over Dutch aircraft maker Fokker when other airplane makers rejected its offer to form a consortium. The three proposed partners—Hyundai, Hanjin, and Daewoo—notified the South Korean government that they would not join Samsung Aerospace Industries.[56]
AST Research
Samsung bought AST (1994) and tried to break into North America, but the effort was unsuccessful. Samsung was forced to close the California-based computer maker following mass defection of research staff and a string of losses.[57]
FUBU clothing and apparel
In 1992, Daymond John had started the company with a hat collection that was made in his house in the Queens area of New York City. To fund the company, John had to mortgage his house for $100,000. With his friends J. Alexander Martin, Carl Brown, and Keith Perrin, half of his house was turned into the first factory of FUBU, while the other half remained as the living quarters. Along with the expansion of FUBU, Samsung invested in FUBU in 1995.[58]
Lehman Brothers Holdings’ Asian operations
Samsung Securities was one of a handful of brokerages looking into Lehman Brothers Holdings. But Nomura Holdings has reportedly waved the biggest check to win its bid for Lehman Brothers Holdings’ Asian operations, beating out Samsung Securities, Standard Chartered, and Barclays.[59] Ironically, after few months Samsung Securities Co., Ltd. and City of London-based N M Rothschild & Sons (more commonly known simply as Rothschild) have agreed to form a strategic alliance in investment banking business. Two parties will jointly work on cross border mergers and acquisition deals.[60]
MEDISON Co.,Ltd. – Ultrasound Monitors
In December 2010, Samsung Electronics bought MEDISON Co., a South Korean medical-equipment company, the first step in a long-discussed plan to diversify from consumer electronics.[61]
Grandis Inc. – memory developer
In July 2011, Samsung announced that it had acquired spin-transfer torque random access memory (MRAM) vendor Grandis Inc.[62] Grandis will become a part of Samsung's R&D operations and will focus on development of next generation random-access memory.[63]
Samsung and Sony joint venture – LCD display
On 26 December 2011 the board of Samsung Electronics approved a plan to buy Sony's entire stake in their 2004 joint liquid crystal display (LCD) venture for 1.08 trillion won ($938.97 million).[64]
mSpot, Inc – Music Service
On 9 May 2012, mSpot announced that it had been acquired by Samsung Electronics with the intention of a cloud based music service.[65] The succeeding service was Samsung Music Hub.
NVELO, Inc. – Cache Software Developer
In December 2012, Samsung announced that it had acquired the privately held storage software vendor NVELO, Inc., based in Santa Clara, California.[66] NVELO will become part of Samsung's R&D operations, and will focus on software for intelligently managing and optimizing next-generation Samsung SSD storage subsystems for consumer and enterprise computing platforms.
NeuroLogica – Portable CT scanner
In January 2013, Samsung announced that it has acquired medical imaging company NeuroLogica, part of the multinational conglomerate’s plans to build a leading medical technology business. Terms of the deal were not disclosed.[67]
SmartThings - Home Automation
On 14 August 2014, Samsung acquired SmartThings, a fast-growing home automation startup. The company isn’t releasing the acquisition price, but TechCrunch reported a $200 million pricetag when first caught word of the deal in July 2014. [68]
Quietside - U.S. air conditioner firm
On 19 August 2014, Samsung said it had acquired U.S. air conditioner distributor Quietside LLC as part of its push to strengthen its "smart home" business. A Samsung Electronics spokesman said the South Korean company acquired 100 percent of Quietside, but declined to elaborate on the price or other details.[69]
Proximal Data - Virtualization Company
3 November 2014, Samsung announced it had acquired Proximal Data, Inc., a San Diego, California-based pioneer of server-side caching software with I/O intelligence that work within virtualized systems.[70]

Operations


The Samsung Library at Sungkyunkwan University Natural Sciences Campus in Suwon, South Korea

Samsung Jongno Tower in Jongno-gu, Seoul

Samsung Tower Palace

Samsung Fire & Marine Insurance HQ

Samsung comprises around 80 companies.[71] It is highly diversified, with activities in areas including construction, consumer electronics, financial services, shipbuilding, and medical services.[71]

In FY 2009, Samsung reported consolidated revenues of 220 trillion KRW ($172.5 billion). In FY 2010, Samsung reported consolidated revenues of 280 trillion KRW ($258 billion), and profits of 30 trillion KRW ($27.6 billion) (based upon a KRW-USD exchange rate of 1,084.5 KRW per USD, the spot rate as of 19 August 2011).[72] However, it should be noted that these amounts do not include the revenues from all of Samsung's subsidiaries based outside South Korea.[73]

Subsidiaries and affiliates

As of April 2011, the Samsung Group comprised 59 unlisted companies and 19 listed companies, all of which had their primary listing on the Korea Exchange.[74]

Principal subsidiary and affiliate companies of Samsung include:

Ace Digitech

Ace Digitech is listed on the Korea Exchange stock-exchange (number 036550).

Cheil Industries

Cheil Industries is listed on the Korea Exchange stock-exchange (number 001300).

Cheil Worldwide

Cheil Worldwide is listed on the Korea Exchange stock-exchange (number 030000).

Credu

Credu is listed on the Korea Exchange stock-exchange (number 067280).

Imarket Korea

Imarket Korea is listed on the Korea Exchange stock-exchange (number 122900).

Samsung Card

Samsung Card is listed on the Korea Exchange stock-exchange (number 029780).

Samsung SDS

Samsung SDS is a multinational IT Service company headquartered in Seoul. It was founded in March 1985. Its principal activity is the providing IT system(ERP, IT Infrastructure, IT Consulting, IT Outsourcing, Data Center). Samsung SDS is the Korea's largest IT service company. It achieved total revenues of 6,105.9 billion won (US$5.71 billion) in 2012.

Samsung C&T Corporation

Samsung C&T Corporation is listed on the Korea Exchange stock-exchange (000830).

Samsung Electro-Mechanics

Samsung Electro-Mechanics, established in 1973 as a manufacturer of key electronic components, is headquartered in Suwon, Gyeonggi-do, South Korea. It is listed on the Korea Exchange stock-exchange (number 009150).[75]

Samsung Electronics

Samsung Electronics is a multinational electronics and information technology company headquartered in Suwon and the flagship company of the Samsung Group.[76] Its products include air conditioners, computers, digital televisions, liquid crystal displays (including thin film transistors (TFTs) and active-matrix organic light-emitting diodes (AMOLEDs)), mobile phones, monitors, printers, refrigerators, semiconductors, and telecommunications networking equipment.[77] It is the world's largest mobile phone maker by unit sales in the first quarter of 2012, with a global market share of 25.4%.[78] It is also the world's second-largest semiconductor maker by 2011 revenues (after Intel).[79]
Samsung Electronics is listed on the Korea Exchange stock-exchange (number 005930).

Samsung Engineering

Samsung Engineering is a multinational construction company headquartered in Seoul. It was founded in January 1969. Its principal activity is the construction of oil refining plants; upstream oil and gas facilities; petrochemical plants and gas plants; steel making plants; power plants; water treatment facilities; and other infrastructure.[80] It achieved total revenues of 9,298.2 billion won (US$8.06 billion) in 2011.[81]

Samsung Engineering is listed on the Korea Exchange stock-exchange (number 02803450).

Samsung Everland

Samsung Everland engages in an array of services closely associated with the day-to-day lives and business operations of its customers. Its business scope covers the three main sectors of Environment & Asset, Food Culture, and Resort.

Since its inception in 1963 and the launch of theme park "Everland" in 1976, Samsung Everland has steadily built its presence across the markets of golf, building management, food and beverage, energy, and environment. Through this process, Samsung Everland has managed to achieve its current market standing. As a corporation trusted by the local community and renowned globally as a pioneer in the infrastructure of life, Samsung Everland strives to help its customers lead fulfilling lives and achieve success in their business operations by building the infrastructure for every aspect of life including entertainment, culinary, and business.

Samsung Fine Chemicals

Samsung Fine Chemicals is listed on the Korea Exchange stock-exchange (number 004000).

Samsung Fire & Marine Insurance

Samsung Fire & Marine Insurance is a multinational general insurance company headquartered in Seoul.[82] It was founded in January 1952 as Korea Anbo Fire and Marine Insurance and was renamed Samsung Fire & Marine Insurance in December 1993.[83] Samsung Fire & Marine Insurance offers services including accident insurance, automobile insurance, casualty insurance, fire insurance, liability insurance, marine insurance, personal pensions and loans.[84] As of March 2011 it had operations in 10 countries and 6.5 million customers.[84] Samsung Fire & Marine Insurance had a total premium income of $11.7 billion in 2011 and total assets of $28.81 billion on 31 March 2011.[84] It is the largest provider of general insurance in South Korea.
 
Samsung Fire has been listed on the Korea Exchange stock-exchange since 1975 (number 000810).[84]

Samsung Heavy Industries

Samsung Heavy Industries is a shipbuilding and engineering company headquartered in Seoul. It was founded in August 1974. Its principal products are bulk carriers, container vessels, crude oil tankers, cruisers, passenger ferries, material handling equipment steel and bridge structures.[85] It achieved total revenues of 13,358.6 billion won in 2011 and is the world's second-largest shipbuilder by revenues (after Hyundai Heavy Industries).[86][87]

Samsung Heavy Industries is listed on the Korea Exchange stock-exchange (number 010140).

Samsung Life Insurance

Samsung Life Insurance Co., Ltd. is a multinational life insurance company headquartered in Seoul. It was founded in March 1957 as Dongbang Life Insurance and became an affiliate of the Samsung Group in July 1963.[88] Samsung Life's principal activity is the provision of individual life insurance and annuity products and services.[89] As of December 2011 it had operations in seven countries, 8.08 million customers and 5,975 employees.[88] Samsung Life had total sales of 22,717 billion won in 2011 and total assets of 161,072 billion won at 31 December 2011.[88] It is the largest provider of life insurance in South Korea.
Samsung Life Insurance is listed on the Korea Exchange stock-exchange (number 032830)

Samsung Machine Tools

Samsung Machine Tools of America is a national distributor of machines in the United States. Samsung GM Machine Tools is the head office of China, It 's SMEC Legal incorporated company.[90]

Samsung Medical Center

The Samsung Medical Center was founded on 9 November 1994, under the philosophy of "contributing to improving the nation’s health through the best medical service, advanced medical research, and development of outstanding medical personnel". The Samsung Medical Center consists of a hospital and a cancer center. The hospital is located in an intelligent building with floor space of more than 200,000 square meters and 20 floors above ground and 5 floors underground, housing 40 departments, 10 specialist centers, 120 special clinics, and 1,306 beds. [check quotation syntax] The 655-bed Cancer Center has 11 floors above ground and 8 floors underground, with floor space of over 100,000 square meters. SMC is a tertiary hospital manned by approximately 7,400 staff including over 1,200 doctors and 2,300 nurses. Since its foundation, the Samsung Medical Center has successfully incorporated and developed an advanced model with the motto of becoming a "patient-centered hospital", a new concept in Korea.

Samsung SDI

Samsung SDI is listed on the Korea Exchange stock-exchange (number 006400). On 5 December 2012, the EU's antitrust regulator fined Samsung SDI and several other major companies for fixing prices of TV cathode-ray tubes in two cartels lasting nearly a decade.[91]

Samsung Securities

Samsung Securities is listed on the Korea Exchange stock-exchange (number 016360).

Samsung Techwin

Samsung Techwin is listed on the Korea Exchange stock-exchange (number 012450).

Samtron

Samtron was a subsidiary of Samsung until 1999 when it became independent. After that, it continued to make computer monitors and plasma displays until 2003, Samtron became Samsung when Samtron was a brand. In 2003 the website redirects to Samsung.

Shilla Hotels and Resorts

The Hotel opened in March 1979, following the intention of the late Lee Byung-chull, the founder of the Samsung Group. Hosting numerous state visits and international events, it has played the role of locomotive for the service industry in Korea with pride and responsibility as "the face representing the Samsung Group" and "the hotel representing Korea". THE SHILLA maintains elegance and a tradition of winning guests’ hearts with the aim of becoming "the best hospitality company". By joining LHW, it is on par with the most luxurious hotels in the world. Meanwhile, it has added modernistic design elements on top of the roof called tradition, thus going through changes to make itself a premium lifestyle space. In addition, with its know-how as a service company in the background, it started a duty-free shop business, and has built its image as the best global distribution company. Also, it is expanding its business into commissioned management of fitness facilities with five-star hotels in Korea and abroad as well as into the restaurant business. THE SHILLA promises to be a globally prestigious hospitality company that offers the best value for money by making creative innovations and continuously taking on challenges. Shilla Hotels and Resorts is listed on the Korea Exchange stock-exchange (number 008770).

S-1 Corporation

S-1 was founded as Korea’s first specialized security business in 1997 and has maintained its position at the top of industry with the consistent willingness to take on challenges. S1 Corporation is listed on the Korea Exchange stock-exchange (number 012750).

Joint ventures

aT Grain

State-run Korea Agro-Fisheries Trade Corp. set up the venture, aT Grain Co., in Chicago, with three other South Korean companies, Korea Agro-Fisheries owns 55 percent of aT Grain, while Samsung C&T Corp, Hanjin Transportation Co. and STX Corporation each hold 15 percent.[92]

Brooks Automation Asia

Brooks Automation Asia Co., Ltd. is a joint venture between Brooks Automation (70%) and Samsung (30%) which was established in 1999. The venture locally manufactures and configure vacuum wafer handling platforms and 300mm Front-Opening Unified Pod (FOUP) load port modules, and designs, manufactures and configures atmospheric loading systems for flat panel displays.[93]

POSCO-Samsung Slovakia Steel Processing Center

Company POSS – SLPC s.r.o. was founded in 2007 as a subsidiary of Samsung C & T Corporation, Samsung C & T Deutschland and the company POSCO.[94]

Samsung Air China Life Insurance

Samsung Air China Life Insurance is a 50:50 joint venture between Samsung Life Insurance and China National Aviation Corporation. It was established in Beijing in July 2005.[95]

Samsung Biologics

Samsung Electronics Co. and Samsung Everland Inc. will each own a 40 percent stake in the venture, with Samsung C&T Corp. and Durham, North Carolina-based Quintiles each holding 10 percent. It will contract-make medicines made from living cells, and Samsung Group plans to expand into producing copies of biologics including Rituxan, the leukemia and lymphoma treatment sold by Roche Holding AG and Biogen Idec Inc.[96]
Samsung Bioepis
Samsung Bioepis is a joint venture between Samsung Biologics (85%) and the U.S.-based Biogen Idec (15%).[97] In 2014, Biogen Idec agreed to commercialize future anti-TNF biosimilar products in Europe through Samsung Bioepis.[98]

Samsung BP Chemicals

Samsung BP Chemicals is a 49:51 joint venture between Samsung and the UK-based BP, which was established in 1989 to produce and supply high-value-added chemical products.[citation needed]

Samsung Corning Precision Glass

Samsung Corning Precision Glass is a joint venture between Samsung and Corning, which was established in 1973 to manufacture and market cathode ray tube glass for black and white televisions. The company’s first LCD glass substrate manufacturing facility opened in Gumi, South Korea, in 1996.

Samsung Sumitomo LED Materials

Samsung Sumitomo LED Materials is a Korea-based joint venture between Samsung LED Co., Ltd., an LED maker based in Suwon, Korea-based and the Japan-based Sumitomo Chemical. The JV will carry out research and development, manufacturing, and sales of sapphire substrates for LEDs.[99]

Samsung Thales

Samsung Thales Co., Ltd. (until 2001 known as Samsung Thomson-CSF Co., Ltd.) is a joint venture between Samsung Techwin and the France-based aerospace and defence company Thales. It was established in 1978 and is based in Seoul.[100]

Samsung Total

Samsung Total is a 50:50 joint venture between Samsung and the France-based oil group Total S.A. (more specifically Samsung General Chemicals and Total Petrochemicals).

SB LiMotive

SB LiMotive is a 50:50 joint company of Robert Bosch GmbH (commonly known as Bosch) and Samsung SDI founded in June 2008. The joint venture develops and manufactures lithium-ion batteries for use in hybrid-, plug-in hybrid vehicles and electric vehicles.

SD Flex

SD Flex Co., Ltd. was founded on October 2004 as a joint venture corporation by Samsung and DuPont, one of the world's largest chemical companies.[101]

Sermatech Korea

Sermatech owns 51% of its stock, while Samsung owns the remaining 49%. The U.S. firm Sermatech International, for a business specializing in aircraft construction processes such as special welding and brazing.[102]

Siam Samsung Life Insurance

Samsung Life Insurance holds a 37% stake while the Saha Group also has a 37.5% stake in the joint venture, with the remaining 25% owned by Thanachart Bank.[103]

Siltronic Samsung Wafer

Siltronic Samsung Wafer Pte. Ltd, the joint venture by Samsung and wholly owned Wacker Chemie subsidiary Siltronic, was officially opened in Singapore in June 2008.[104]

SMP

SMP Ltd. is a joint venture between Samsung Fine Chemicals and MEMC. MEMC Electronic Materials Inc. and an affiliate of Korean conglomerate Samsung are forming a joint venture to build a polysilicon plant.

Steco

Steco Co. is the joint venture established between Samsung Electronics and Japan's Toray Industries in 1995.[105]

Stemco

Stemco is a joint venture established between Samsung Electro-Mechanics and Toray Industries in 1995.[106]

Toshiba Samsung Storage Technology

Toshiba Samsung Storage Technology Corporation (TSST) is joint venture between Samsung Electronics and Toshiba of Japan which specialises in optical disc drive manufacturing. TSST was formed in 2004, and Toshiba owns 51% of its stock, while Samsung owns the remaining 49%.

Partially owned companies

Atlântico Sul

Samsung Heavy Industries owns 10% of the Brazilian shipbuilder Atlântico Sul, whose Atlântico Sul Shipyard is the largest shipyard in South America. The Joao Candido, Brazil's largest ship, was built by Atlântico Sul with technology licensed by Samsung Heavy Industries.[110] The companies have a technical assistance agreement through which industrial design, vessel engineering, and other know-how is being transferred to Atlântico Sul.[111]

DGB Financial Group

Samsung Life Insurance currently holds a 7.4% stake in the South Korean banking company DGB Financial Group, making it the largest shareholder.[112]

Corning Inc.

Samsung acquired 7.4% of Gorilla Glass maker Corning, signing a long-term supply deal.[113]

Doosan Engine

Samsung Heavy Industries currently holds a 14.1% stake in Doosan Engine, making it the second-largest shareholder.[114]

Korea Aerospace Industries

Samsung Techwin currently holds a 10% stake in Korea Aerospace Industries (KAI). Other major shareholders include the state-owned Korea Finance Corporation (26.75%), Hyundai Motor (10%) and Doosan (10%).[115]

MEMC KOREA

MEMC's joint venture with Samsung Electronics Company, Ltd. In 1990, MEMC entered into a joint venture agreement to construct a silicon plant in Korea.[116]

Pantech

Samsung buys 10% stake in rival phone maker Pantech.[117]

Rambus Incorporated

Samsung currently owns 4.19% of Rambus Incorporated.[118]

Renault Samsung Motors

Samsung currently owns 19.9% of the automobile manufacturer Renault Samsung Motors.

Seagate Technology

Samsung currently owns 9.6% of Seagate Technology, making it the second-largest shareholder. Under a shareholder agreement, Samsung has the right to nominate an executive to Seagate’s Board of Directors.[119]

Sharp Corporation

Samsung owns 3% of the rival company.[120]

SungJin Geotec

Samsung Engineering holds a 10% stake in Sungjin Geotec, an offshore oil drilling company that is a subsidiary of POSCO.[121]

Taylor Energy

Taylor Energy is an independent American oil company that drills in the Gulf of Mexico based in New Orleans, Louisiana.[122] Samsung Oil & Gas USA Corp., subsidiaries of Samsung, currently owns 20% of Taylor Energy.

Wacom

Samsung owns 5% of the company.[123]

Major customers


The world's largest oil and gas project, Sakhalin II- Lunskoye platform under construction. The topside facilities of the LUN-A (Lunskoye) and PA-B (Piltun Astokhskoye) platforms are being built at the Samsung Heavy Industry shipyard in South Korea.[124]

Major customers of Samsung include:
Royal Dutch Shell
Samsung Heavy Industries will be the sole provider of liquefied natural gas (LNG) storage facilities worth up to US$50 billion to Royal Dutch Shell for the next 15 years.[125][126]
Shell unveiled plans to build the world's first floating liquefied natural gas (FLNG) platform. In October 2012[127] at Samsung Heavy Industries' shipyard on Geoje Island in South Korea work started on a "ship" that, when finished and fully loaded, will weigh 600,000 tonnes, the world's biggest "ship". That is six times larger than the largest U.S. aircraft carrier.[128]
United Arab Emirates government
A consortium of South Korean firms, including Samsung, Korea Electric Power Corporation, and Hyundai, won a deal worth $40 billion to build nuclear power plants in the United Arab Emirates.[129]
Ontario government
The government of the Canadian province of Ontario signed off one of the world's largest renewable energy projects, signing a deal worth $6.6 billion to for an additional 2,500 MW of new wind and solar energy. Under the agreement, a consortium led by Samsung and the Korea Electric Power Corporation will manage the development of 2,000 MW-worth of new wind farms and 500 MW of solar capacity, while also building a manufacturing supply chain in the province.[130]

The Samsung Byeolpyo noodles logo, used from late 1938 until replaced in 1958. 
The Samsung Group logo, used from late 1969 until replaced in 1979 
The Samsung Group logo ("three stars"), used from late 1980 until replaced in 1992 
The Samsung Electronics logo, used from late 1980 until replaced in 1992 
Samsung's current logo, in use since 1993.[131] 
The current Samsung logo design is intended to emphasize flexibility and simplicity while conveying a dynamic and innovative image through the ellipse, the symbol of the universe and the world stage.
The openings on both ends of the ellipse where the letters "S" and "G" are located are intended to illustrate the company's open-mindedness and the desire to communicate with the world. The English rendering is a visual expression of its core corporate vision, excellence in customer service through technology.

The basic color in the logo is blue, which the company has employed for years, symbolizing stability, reliability, and corporate social responsibility.[132]

Samsung has an audio logo, which consists of the notes E♭, A♭, D♭, E♭. The audio logo was produced by Musikvergnuegen and written by Walter Werzowa.[133][134]

Samsung Medical Center

Samsung donates around US$100 million per annum to the Samsung Medical Center, a non-profit healthcare provider founded by the group in 1994.[135] Samsung Medical Center incorporates Samsung Seoul Hospital, Kangbook Samsung Hospital, Samsung Changwon Hospital, Samsung Cancer Center and Samsung Life Sciences Research Center. The Samsung Cancer Center, located in Seoul, is the largest cancer center in Asia.[136]

Samsung Medical Center and pharmaceutical multinational Pfizer have agreed to collaborate on research to identify the genomic mechanisms responsible for clinical outcomes in hepatocellular carcinoma.[137]

Sponsorships


A Samsung display in Salt Lake City during the 2002 Winter Olympics

Samsung are the current sponsors of Premier League football club Chelsea.[138]
Samsung, which started as a domestic sponsor of the Olympics in Seoul 1988, has been a worldwide Olympic partner since the 1998 Winter Olympics.[139]

Samsung operating many sports clubs, football club Suwon Samsung Bluewings, baseball club Samsung Lions, basketball club Seoul Samsung Thunders, volleyball club Daejeon Samsung Fire Bluefangs, etc.

Samsung also sponsors a former StarCraft: Brood War and current Starcraft II and League of Legends professional gaming team named Samsung Galaxy. Samsung has sponsored the team since 2000.

Samsung Electronics spent an estimated $14 billion (U.S.) – more than Iceland's GDP – on advertising and marketing in 2013. At 5.4% of annual revenue, this is a larger proportion than any of the world’s top-20 companies by sales (Apple spent 0.6% and General Motors spent 3.5%). Samsung became the world's biggest advertiser in 2012, spending $4.3 billion, compared to Apple's $1 billion. Samsung's global brand value of $39.6 billion is less than half that of Apple.[140]

Controversies

Financial scandals

In 2007, former Samsung chief lawyer Kim Yong Chul claimed that he was involved in bribing and fabricating evidence on behalf of the group's chairman Lee Kun-hee and the company. Kim said that Samsung lawyers trained executives to serve as scapegoats in a "fabricated scenario" to protect Lee, even though those executives were not involved. Kim also told the media that he was "sidelined" by Samsung after he refused to pay a $3.3 million bribe to the U.S. Federal District Court judge presiding over a case where two of their executives were found guilty on charges related to memory chip price fixing. Kim revealed that the company had raised a large amount of secret funds through bank accounts illegally opened under the names of up to 1,000 Samsung executives—under his own name, four accounts were opened to manage 5 billion won.[142]

Antitrust concerns

"You can even say the Samsung chairman is more powerful than the President of South Korea. Korean people have come to think of Samsung as invincible and above the law", said Woo Suk-hoon, host of a popular economics podcast in a Washington Post article headlined "In South Korea, the Republic of Samsung", published on 9 December 2012. Critics claimed that Samsung knocked out smaller businesses, limiting choices for Korean consumers, and sometimes colluded with fellow giants to fix prices while bullying those who investigate. Lee Jung-hee, a South Korean presidential candidate, said in a debate, "Samsung has the government in its hands. Samsung manages the legal world, the press, the academics and bureaucracy".[143]

Viral marketing

The Fair Trade Commission of Taiwan is investigating Samsung and its local Taiwanese advertising agency for false advertising. The case was commenced after the Commission received complaints stating that the agency hired students to attack competitors of Samsung Electronics in online forums.[144] Samsung Taiwan made an announcement on its Facebook page in which it stated that it had not interfered with any evaluation report and had stopped online marketing campaigns that constituted posting or responding to content in online forums.[145]

Labor Abuses

One of Samsung's Chinese supplier factories, HEG, was exposed for using child workers by China Labor Watch in July 2014. HEG denied the charges and has sued China Labor Watch.[146][147]

Monday, February 16, 2015

Blindsight


From Wikipedia, the free encyclopedia

Blindsight is the ability of people who are cortically blind due to lesions in their striate cortex, also known as primary visual cortex or V1, to respond to visual stimuli that they do not consciously see.[1] The majority of studies on blindsight are conducted on patients who have the "blindness" on only one side of their visual field. Following the destruction of the striate cortex, patients are asked to detect, localize, and discriminate amongst visual stimuli that are presented to their blind side, often in a forced-response or guessing situation, even though they don't consciously recognise the visual stimulus. Research shows that blind patients achieve a higher accuracy than would be expected from chance alone. Type 1 blindsight is the term given to this ability to guess—at levels significantly above chance—aspects of a visual stimulus (such as location or type of movement) without any conscious awareness of any stimuli. Type 2 blindsight occurs when patients claim to have a feeling that there has been a change within their blind area—e.g. movement—but that it was not a visual percept.[2] Blindsight challenges the common belief that perceptions must enter consciousness to affect our behavior;[3] it shows that our behavior can be guided by sensory information of which we have no conscious awareness.[3] It may be thought of as a converse of the form of anosognosia known as Anton–Babinski syndrome, in which there is full cortical blindness along with the confabulation of visual experience.

History

We owe much of our current understanding of blindsight to early experiments on monkeys. One monkey in particular, Helen, could be considered the "star monkey in visual research" because she was the original blindsight subject. Helen was a macaque monkey that had been decorticated; specifically, her primary visual cortex (V1) was completely removed. This procedure had the expected results that Helen became blind as indicated by the typical test results for blindness. Nevertheless, under certain specific situations, Helen exhibited sighted behavior. Her pupils would dilate and she would blink at stimuli that threatened her eyes. Furthermore, under certain experimental conditions, she could detect a variety of visual stimuli, such as the presence and location of objects, as well as shape, pattern, orientation, motion, and color.[4][5][6] In many cases she was able to navigate her environment and interact with objects as if she were sighted.[7]

A similar phenomenon was also discovered in humans. Subjects who had suffered damage to their visual cortices due to accidents or strokes reported partial or total blindness. In spite of this, when they were prompted they could "guess" with above-average accuracy about the presence and details of objects, much like the animal subjects, and they could even catch objects that were tossed at them. Interestingly, the subjects never developed any kind of confidence in their abilities. Even when told of their successes, they would not begin to spontaneously make "guesses" about objects, but instead still required prompting. Furthermore, blindsight subjects rarely express the amazement about their abilities that sighted people would expect them to express.[8]

Describing blindsight

The brain contains several mechanisms involved in vision. Consider two systems in the brain which evolved at different times. The first that evolved is more primitive and resembles the visual system of animals such as fish and frogs. The second to evolve is more complex and is possessed by mammals.
The second system seems to be the one that is responsible for our ability to perceive the world around us and the first system is devoted mainly to controlling eye movements and orienting our attention to sudden movements in our periphery. Patients with blindsight have damage to the second, "mammalian" visual system (the visual cortex of the brain and some of the nerve fibers that bring information to it from the eyes).[3] This phenomenon shows how, after the more complex visual system is damaged, people can use the primitive visual system of their brains to guide hand movements towards an object even though they can't see what they are reaching for.[3] Hence, visual information can control behavior without producing a conscious sensation. This ability of those with blindsight to see objects that they are unconscious of suggests that consciousness is not a general property of all parts of the brain; yet it suggests that only certain parts of the brain play a special role in consciousness.[3]

Blindsight patients show awareness of single visual features, such as edges and motion, but cannot gain a holistic visual percept. This suggests that perceptual awareness is modular and that—in sighted individuals—there is a "binding process that unifies all information into a whole percept", which is interrupted in patients with such conditions as blindsight and visual agnosia.[1] Therefore, object identification and object recognition are thought to be separate process and occur in different areas of the brain, working independently from one another. The modular theory of object perception and integration would account for the "hidden perception" experienced in blindsight patients. Research has shown that visual stimuli with the single visual features of sharp borders, sharp onset/offset times,[9] motion,[10] and low spacial frequency[11] contribute to, but are not strictly necessary for, an object's salience in blindsight.

Theories of causation

There are three theories for the explanation of blindsight. The first states that after damage to area V1, other branches of the optic nerve deliver visual information to the superior colliculus and several other areas, including parts of the cerebral cortex. These areas might control the blindsight responses, but still many people with damage to area V1 don't show blindsight or only show it in certain parts of the visual field.

Another explanation to the phenomenon is that even though the majority of a person's visual cortex may be damaged, tiny islands of healthy tissue remain. These islands aren't large enough to provide conscious perception, but nevertheless enough for blindsight. (Kalat, 2009)

A third theory is that the information required to determine the distance to and velocity of an object in object space is determined by the lateral geniculate nucleus before the information is projected to the cerebral cortex. In the normal subject these signals are used to merge the information from the eyes into a three-dimensional representation (which includes the position and velocity of individual objects relative to the organism), extract a vergence signal to benefit the precision (previously auxiliary) optical system (POS), and extract a focus control signal for the lenses of the eyes. The stereoscopic information is attached to the object information passed to the cerebral cortex.[12]

Evidence of blindsight can be indirectly observed in children as young as two months, although there is difficulty in determining the type in a patient who is not old enough to answer questions.[13]

Blindsight and the lateral geniculate nucleus

Blindsight is a disorder in which the individual sustains damage to the primary visual cortex and as a result, loses sight in that corresponding visual field.[14] Patients, however, are able to detect stimuli in that damaged visual field which attributes the "sight" portion in the term blindsight. Mosby's Dictionary of Medicine, Nursing & Health Professions defines the lateral geniculate nucleus (LGN) as "one of two elevations of the lateral posterior thalamus receiving visual impulses from the retina via the optic nerves and tracts and relaying the impulses to the calcarine (visual) cortex".[15] In particular, the magnocellular system of the LGN is less affected by the removal of V1 which suggests that it is because of this system in the LGN that blindsight occurs.[16] This quote suggests that the LGN is what is responsible for the causation of blindsight. Although damage to the primary visual cortex (V1) is what causes blindsight, the still functioning magnoceullular system of the LGN is what causes the sight in blindsight. According to Dragoi of The UT Medical School at Houston, the LGN is made up of 6 layers including layers 1 & 2 which are part of the magnocellular layers. The cells in these layers behave like that of M-retinal ganglion cells,[17] are most sensitive to movement of visual stimuli [17] and have large center-surround receptive fields.[17] M-retinal ganglion cells project to the magnocellular layers.[17]

To obtain a better understanding, a more detailed look of visual pathways is included. What is seen in the left and right visual field is taken in by each eye and brought back to the optic disk via the nerve fiber of the retina.[17] From there, the visual information is taken from the optic disk to the optic nerve and down to the optic chiasm where the information is then in the optic tract and will terminate in four different areas of the brain including the LGN, superior colliculus, pretectum of the mid brain and suprachiasmatic nucleus of the hypothalamus and most axons from the LGN will terminate in the primary visual cortex, but not all of them.[17]

In a normal, healthy individual, brain scans were conducted to try and prove that visual motion can bypass V1, creating a connection from the LGN to the human middle temporal complex.[18] Their findings concluded that yes, there was a connection of visual motion information that went directly from the LGN to the hMT+ that allowed information travel without means of V1.[18] Alan Cowey also states that there is still a direct pathway from the retina to the LGN following a traumatic injury to V1 which from there is sent to the extrastriate visual areas.[19] The extrastriate visual areas include the occipital lobes that surround V1.[17] In non-human primates, these can include V2, V3 and V4.[17]

In a study done on primates, after removal of part of V1, the V2 and V3 regions of the brain were still excited by visual stimulus.[19] According to Lawrence Weiskrantz, "the LGN projections that survive V1 removal are relatively sparse in density, but are nevertheless widespread and probably encompass all extrastriate visual areas".[20] This was found through indirect testing methods by first measuring the influence of a stimuli on the blind hemifield against the same stimuli presented in the intact hemifield as well as using reflex measures such as electrical skin conductance.[20] These methods, used with MRI, produced the results that Weiskrantz recorded.[20] This finding also suggests that following the removal of V1, neurons from the LGN remain and send visual stimulus information to V2, V4, V5 and TEO.[20]

Injury to the primary visual cortex, including lesions and other trauma, leads to the loss of visual experience.[16] However, the residual vision that is left cannot be attributed to V1. According to the study done by Schmid, Mrowka, Turchi, Saunders, Wilke, Peters, Ye & Leopold, "thalamic lateral geniculate nucleus has a causal role in V1-independent processing of visual information". This information was founded by the previously stated authors through experiments using fMRI images during activation and inactivation of the LGN and the contribution the LGN has on visual experience in monkeys with a V1 lesion. Furthermore, once the LGN was inactivated, virtually all of the extrastriate areas of the brain no longer showed a response on the fMRI.[16] The information founded in this study lead to a qualitative assessment that included "scotoma stimulation, with the LGN intact had fMRI activation of ~20% of that under normal conditions".[16] This finding agrees with the information obtained from and fMRI images of patients with blindsight.[16]

These findings run parallel with the theory that the LGN is what actually houses this residual vision upon damage of the VI. Also from the same study [16] patient GY presented with blindsight. After research, it was discovered that the LGN is less affected by a V1 injury as many neurons are still reacting to lower-visual field stimulation.[16] All residual vision was lost, however, when there is injury to the LGN.[16] This further substantiates the idea that the LGN is preserved upon injury of V1 and is what encompasses the "sight" portion of blindsight.

The LGN plays a major role in blindsight.[16][17][19][20] Although injury to V1 does create a loss of vision, the LGN is what is credited for the residual vision that remains, substantiating the word "sight" in blindsight. It is important to recognize that the LGN has the ability to bypass V1 and still communicate to the extrastraite areas of the brain, creating the response to visual stimuli that we see in blindsight patients.[16][17][19][20] Using the proper techniques such as fMRI and other indirect methodologies, blindsight can be attributed to V1 damage and a functioning LGN.

Evidence in animals

In 1995 Dr. Cowey published the paper "Blindsight in Monkeys". At the time Blindsight was a little proven phenomenon that was believed to be caused by damage due to stroke. However patients were rare and it was hard to separate the areas responsible for the condition from other damage retained. In this experiment Cowey attempted to show monkeys with lesions in or even wholly removed striate cortexes also suffered from Blindsight. To do this he had the monkeys complete a task similar to the tasks commonly used on human patients with the disorder. The monkeys were placed in front of a monitor and taught to differentiate between trials where either an object in their visual field or nothing is present when a tone is played. Since Blindsight causes people to not see anything in their right visual field, if the monkeys registered blank trials, or trials in which no object was presented, the same as trials in which something appeared on the right, then they would have responded the same way as a human with Blindsight. Cowey hoped this would provide evidence for his claims that the striate cortex was key to the disorder, and he did find that the monkeys did indeed perform very similar to human participants.[21]

Also that year, Cowey published a second paper, "Visual detection in monkey's with Blindsight". In this paper he wanted to show that monkeys too could be conscious of movement in their deficit visual field despite not being consciously aware of the presence of an object there. To do this Cowey used another standard test for humans with the condition. The test is similar to the one he previously used, however for this trial the object would only be presented in the deficit visual field and would move. Starting from the center of the deficit visual field the object would either move up, down, or to the right. The monkeys performed identically to humans on the test, getting them right almost every time. This showed that the monkey's ability to detect movement is separate from their ability to consciously detect an object in their deficit visual field, and gave further evidence for the claim that damage to the striate cortex plays a large role in causing the disorder.[22]

Several years later, Cowey would go on to publish another paper in which he would compare and contrast the data collected from his monkeys and that of a specific human patient with Blindsight, GY. GY's striate cortical region was damaged through trauma at the age of eight, though for the most part he retained full functionality, GY was not consciously aware of anything in his right visual field. By comparing brain scars of both GY and the monkeys he had worked with, as well as their test results, Cowey concluded that the effects of striate cortical damage are the same in both species. This finding provided strong validation for Cowey's previous work with monkeys, and showed that monkeys can be used as accurate test subjects for Blindsight.[23]

Case studies

Researchers first delved into what would become the study of blindsight when it was observed that monkeys that have had their primary visual cortex removed could still seemingly discern shape, spatial location, and movement to some extent.[24] Humans however have appeared to lose their sense of sight entirely when the visual cortex was damaged. But, researchers were able to show that human blindsight sufferers did exhibit some amount of unconscious visual recognition when they were tested using the same techniques that the researchers who studied blindsight in animals used.[24]

Researchers applied the same type of tests that were used to study blindsight in animals to a patient referred to as DB. The normal techniques that were used to assess visual acuity in humans involved asking them to verbally describe some visually recognizable aspect of an object or objects. DB was given forced-choice tasks to complete instead. This meant that even if he or she wasn't visually conscious of the presence, location, or shape of an object they still had to attempt to guess regardless. The results of DB's guesses—if one would even refer to them as such—showed that DB was able to determine shape and detect movement at some unconscious level, despite not being visually aware of this. DB themselves chalked up the accuracy of their guesses to be merely coincidental.[24]

The discovery of the condition known as blindsight raised questions about how different types of visual information, even unconscious information, may be affected and sometimes even unaffected by damage to different areas of the visual cortex.[25] Previous studies had already demonstrated that even without conscious awareness of visual stimuli that humans could still determine certain visual features such as presence in the visual field, shape, orientation and movement.[24] But, in a newer study evidence showed that if the damage to the visual cortex occurs in areas above the primary visual cortex the conscious awareness of visual stimuli itself is not damaged.[25] Blindsight is a phenomenon that shows that even when the primary visual cortex is damaged or removed a person can still perform actions guided by unconscious visual information. So even when damage occurs in the area necessary for conscious awareness of visual information, other functions of the processing of these visual percepts are still available to the individual.[24] The same also goes for damage to other areas of the visual cortex. If an area of the cortex that is responsible for a certain function is damaged it will only result in the loss of that particular function or aspect, functions that other parts of the visual cortex are responsible for remain intact.[25]

Alexander and Cowey investigated how contrasting brightness of stimuli affects blindsight patients' ability to discern movement. Prior studies have already shown that blindsight patients are able to detect motion even though they claim they do not see any visual percepts in their blind fields.[24] The subjects of the study were two patients who suffered from hemianopsia—blindness in more than half of their visual field. Both of the subjects had displayed the ability to accurately determine the presence of visual stimuli in their blind hemifields without acknowledging an actual visual percept previously.[26]

To test the effect of brightness on the subject's ability to determine motion they used a white background with a series of colored dots. They would alter the contrast of the brightness of the dots compared to the white background in each different trial to see if the participants performed better or worse when there was a larger discrepancy in brightness or not.[26] Their procedure was to have the participants face the display for a period of time and ask them to tell the researchers when the dots were moving. The subjects focused on the display through two equal length time intervals. They would tell the researchers whether they thought the dots were moving during the first or the second time interval.[26]

When the contrast in brightness between the background and the dots was higher both of the subjects could discern motion more accurately than they would have statistically by just guessing. However one of the subjects was not able to accurately determine whether or not blue dots were moving regardless of the brightness contrast, but he/she was able to do so with every other color dot.[26] When the contrast was highest the subjects were able to tell whether or not the dots were moving with very high rates of accuracy. Even when the dots were white, but still of a different brightness from the background, the subjects could still determine if they were moving or not. But, regardless of the dots' color the subjects could not tell when they were in motion or not when the white background and the dots were of similar brightness.[26]

Kentridge, Heywood, and Weiskrantz used the phenomenon of blindsight to investigate the connection between visual attention and visual awareness. They wanted to see if their subject—who exhibited blindsight in other studies[26]—could react more quickly when his/her attention was cued without the ability to be visually aware of it. The researchers wanted to show that being conscious of a stimulus and paying attention to it was not the same thing.[27]

To test the relationship between attention and awareness they had the participant try to determine where a target was and whether it was oriented horizontally or vertically on a computer screen.[27] The target line would appear at one of two different locations and would be oriented in one of two directions. Before the target would appear an arrow would become visible on the screen and sometimes it would point to the correct position of the target line and less frequently it would not, this arrow was the cue for the subject. The participant would press a key to indicate whether the line was horizontal or vertical, and could then also indicate to an observer whether or not he/she actually had a feeling that any object was there or not—even if they couldn't see anything. The participant was able to accurately determine the orientation of the line when the target was cued by an arrow before the appearance of the target, even though these visual stimuli did not equal awareness in the subject who had no vision in that area of his/her visual field. The study showed that even without the ability to be visually aware of a stimulus the participant could still focus his/her attention on this object.[27]

In 2003, a patient known as TN lost use of his primary visual cortex, area V1. He had two successive strokes, which knocked out the region in both his left and right hemisphere. After his strokes, ordinary tests of TN's sight turned up nothing. He could not even detect large objects moving right in front of his eyes. Researchers eventually began to notice that TN exhibited signs of blindsight and in 2008 decided to test their theory. They took TN into a hallway and asked him to walk through it without using the cane he always carried after having the strokes. TN was not aware at the time, but the researchers had placed various obstacles in the hallway to test if he could avoid them without conscious use of his sight. To the researchers' delight, he moved around every obstacle with ease, at one point even pressing himself up against the wall to squeeze past a trashcan placed in his way. After navigating through the hallway, TN reported that he was just walking the way he wanted to, not because he knew anything was there. (de Gelder, 2008)

Another case study, written about in Carlson's "Physiology of Behavior, 11th edition", gives another insight into blindsight. In this case study, a girl had brought her grandfather in to see a neuropsychologist. The girl's grandfather, Mr. J., had had a stroke which had left him completely blind apart from a tiny spot in the middle of his visual field. The neuropsychologist, Dr. M., performed an exercise with him. The doctor helped Mr. J. to a chair, had him sit down, and then asked to borrow his cane. The doctor then asked, "Mr. J., please look straight ahead. Keep looking that way, and don't move your eyes or turn your head. I know that you can see a little bit straight ahead of you, and I don't want you to use that piece of vision for what I'm going to ask you to do. Fine. Now, I'd like you to reach out with your right hand [and] point to what I'm holding." Mr. J. then replied, "But I dont see anything—I'm blind!". The doctor then said, "I know, but please try, anyway." Mr. J then shrugged and pointed, and was surprised when his finger encountered the end of the cane which the doctor was pointing toward him. After this, Mr. J. said that "it was just luck". The doctor then turned the cane around so that the handle side was pointing towards Mr. J. He then asked for Mr. J. to grab hold of the cane. Mr. J. reached out with an open hand and grabbed hold of the cane. After this, the doctor said, "Good. Now put your hand down, please." The doctor then rotated the cane 90 degrees, so that the handle was oriented vertically. The doctor then asked Mr. J. to reach for the cane again. Mr. J. did this, and he turned his wrist so that his hand matched the orientation of the handle.
This case study shows that—although (on a conscious level) Mr. J. was completely unaware of any visual abilities that he may have had—he was able to orient his grabbing motions as if he had no visual impairments.[3]

Research

Lawrence Weiskrantz and colleagues showed in the early 1970s that if forced to guess about whether a stimulus is present in their blind field, some observers do better than chance.[28] This ability to detect stimuli that the observer is not conscious of can extend to discrimination of the type of stimulus (for example, whether an 'X' or 'O' has been presented in the blind field).

Electrophysiological evidence from the late 1970s (de Monasterio, 1978; Marrocco & Li, 1977; Schiller & Malpeli, 1977) has shown that there is no direct retinal input from S-cones to the superior colliculus, implying that the perception of color information should be impaired. However, recent evidence point to a pathway from S-cones to the superior colliculus, opposing de Monasterio's previous research and supporting the idea that some chromatic processing mechanisms are intact in blindsight.[29][30]

Marco Tamietto & Beatrice de Gelder performed experiments linking emotion detection and blindsight. Patients shown images on their blind side of people expressing emotions correctly guessed the emotion most of the time. The movement of facial muscles used in smiling and frowning were measured and reacted in ways that matched the kind of emotion in the unseen image. Therefore, the emotions were recognized without involving conscious sight.

A recent study found that a young woman with a unilateral lesion of area V1 could scale her grasping movement as she reached out to pick up objects of different sizes placed in her blind field, even though she could not report the sizes of the objects.[31] Similarly, another patient with unilateral lesion of area V1 could avoid obstacles placed in his blind field when he reached toward a target that was visible in his intact visual field.[32] Even though he avoided the obstacles, he never reported seeing them.

Dr. Cowey wrote extensively about patient GY and the tests he underwent to provide further evidence Blindsight is functionally different from conscious vision. To do this GY was not only asked to discriminate between whether or not a stimulus was presented, but he was asked to state the opposite direction of travel for that stimulus. That is to say if the stimulus was traveling upward, he was to indicate it was moving downward, and if it was moving downward he was to indicate that it moved upward. GY was able to do this with incredible accuracy in his left visual field, however he consistently stated the wrong direction of travel in his deficit visual field. This indicated that though GY was aware of the movement, he was not able to apply the rule as stated by the researchers to his observations.[33]

Brain regions involved

Visual processing in the brain goes through a series of stages. Destruction of the primary visual cortex leads to blindness in the part of the visual field that corresponds to the damaged cortical representation. The area of blindness - known as a scotoma - is in the visual field opposite the damaged hemisphere and can vary from a small area up to the entire hemifield. Visual processing occurs in the brain in a hierarchical series of stages (with much crosstalk and feedback between areas). The route from the retina through V1 is not the only visual pathway into the cortex, though it is by far the largest; it is commonly thought that the residual performance of people exhibiting blindsight is due to preserved pathways into the extrastriate cortex that bypass V1. What is surprising is that activity in these extrastriate areas is apparently insufficient to support visual awareness in the absence of V1.

To put it in a more complex way, recent physiological findings suggest that visual processing takes place along several independent, parallel pathways. One system processes information about shape, one about color, and one about movement, location and spatial organization. This information moves through an area of the brain called the lateral geniculate nucleus, located in the thalamus, and on to be processed in the primary visual cortex, area V1 (also known as the striate cortex because of its striped appearance). People with damage to V1 report no conscious vision, no visual imagery, and no visual images in their dreams. However, some of these people still experience the blindsight phenomenon. (Kalat, 2009)

The superior colliculus and prefrontal cortex also have a major role in awareness of a visual stimulus.[34]

Philosophical reception

Colin McGinn sees in the phenomenon of blindsight one reason for his thesis of a natural depth of consciousness.[35] Robert Nozick also joins McGinn in supporting this thesis.[36]

Regulation of nanotechnology

From Wikipedia, the free encyclopedia Because of the ongoing controversy on...