Lawrence Weiskrantz
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Lawrence Weiskrantz (28 March 1926 – 27 January 2018) was a British
neuropsychologist Neuropsychology is a branch of psychology concerned with how a person's cognition and behavior are related to the brain and the rest of the nervous system. Professionals in this branch of psychology often focus on how injuries or illnesses of t ...
. Weiskrantz is credited with discovering the phenomenon of
blindsight Blindsight is the ability of people who are cortically blind to respond to visual stimuli that they do not consciously see due to lesions in the primary visual cortex, also known as the striate cortex or Brodmann Area 17. The term was coined by L ...
, and with establishing the role of the
amygdala The amygdala (; plural: amygdalae or amygdalas; also '; Latin from Greek, , ', 'almond', 'tonsil') is one of two almond-shaped clusters of nuclei located deep and medially within the temporal lobes of the brain's cerebrum in complex verte ...
in emotional learning and emotional behavior. Blindsight is when a person with a brain injury causing blindness can nevertheless detect, point accurately at, and discriminate visually presented objects.


Early life

Weiskrantz originally attended
Girard College Girard College is an independent college preparatory five-day boarding school located on a 43-acre campus in Philadelphia, Pennsylvania. The school was founded and permanently endowed from the shipping and banking fortune of Stephen Girard upon ...
, a boarding school in
Philadelphia Philadelphia, often called Philly, is the List of municipalities in Pennsylvania#Municipalities, largest city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, the List of United States cities by population, sixth-largest city i ...
, due in part to the death of his father when he was six. After graduating, he attended Swarthmore College and served in
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...
. Shortly before his graduation, he was awarded a Catherwood fellowship at
Oxford University Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to th ...
.


Career

Weiskrantz became Professor of Psychology at Oxford University where he remained a full professor until retirement in 1993. He then became an emeritus professor of the university and an emeritus fellow of
Magdalen College Magdalen College (, ) is a constituent college of the University of Oxford. It was founded in 1458 by William of Waynflete. Today, it is the fourth wealthiest college, with a financial endowment of £332.1 million as of 2019 and one of the s ...
. Weiskrantz had a lifelong interest in the writings and research of the Russian neuropsychologist
Alexander Luria Alexander Romanovich Luria (russian: Алекса́ндр Рома́нович Лу́рия, p=ˈlurʲɪjə; 16 July 1902 – 14 August 1977) was a Soviet neuropsychologist, often credited as a father of modern neuropsychology. He develope ...
, whom he had met and befriended while Luria was still doing research. The two remained colleagues until Luria's death in 1977. In the 1950s Weiskrantz went on to ellucidate the region of the
temporal lobe The temporal lobe is one of the four major lobes of the cerebral cortex in the brain of mammals. The temporal lobe is located beneath the lateral fissure on both cerebral hemispheres of the mammalian brain. The temporal lobe is involved in pro ...
responsible for the erratic emotional behaviors in Klüver-Bucy syndrome, a phenomenon known since the 1930 which came to inspire the limbic brain hypothesis of
emotion Emotions are mental states brought on by neurophysiology, neurophysiological changes, variously associated with thoughts, feelings, behavioral responses, and a degree of pleasure or suffering, displeasure. There is currently no scientific ...
. Although this hypothesis did not live to its claims, Weiskrantz used
instrumental An instrumental is a recording normally without any vocals, although it might include some inarticulate vocals, such as shouted backup vocals in a big band setting. Through semantic widening, a broader sense of the word song may refer to inst ...
fear conditioning Pavlovian fear conditioning is a behavioral paradigm in which organisms learn to predict aversive events. It is a form of learning in which an aversive stimulus (e.g. an electrical shock) is associated with a particular neutral context (e.g., a ...
in lesioned animals to identify the temporal structure responsible for Klüver-Bucy syndrome. Ever since, the
amygdala The amygdala (; plural: amygdalae or amygdalas; also '; Latin from Greek, , ', 'almond', 'tonsil') is one of two almond-shaped clusters of nuclei located deep and medially within the temporal lobes of the brain's cerebrum in complex verte ...
has remained crucial in the scientific understanding of emotion. Weiskrantz is generally credited with having discovered the phenomenon of
blindsight Blindsight is the ability of people who are cortically blind to respond to visual stimuli that they do not consciously see due to lesions in the primary visual cortex, also known as the striate cortex or Brodmann Area 17. The term was coined by L ...
following his book on this subject in 1986, which is the voluntary visually evoked response to a stimulus presented within a
scotoma A scotoma is an area of partial alteration in the field of vision consisting of a partially diminished or entirely degenerated visual acuity that is surrounded by a field of normal – or relatively well-preserved – vision. Every normal mam ...
. Academic and service positions he held included: * Part-time Lecturer, Tufts University, 1952 * Research Associate, Inst. of Living, 1952–55 * Senior Postdoctoral Fellow, US National Research Council, 1955–56 * Research Associate,
University of Cambridge The University of Cambridge is a public collegiate research university in Cambridge, England. Founded in 1209 and granted a royal charter by Henry III in 1231, Cambridge is the world's third oldest surviving university and one of its most pr ...
, 1956–61 * Assistant Director of Research, Cambridge, 1961–66 * Reader in Physiological Psychology, Cambridge Univ., 1966–67. * Founding President of the European Brain and Behaviour Society, 1969 * Professor of Psychology,
Oxford University Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to th ...
, and Fellow, Magdalen College, Oxford, 1967–1993; *
Professor Emeritus ''Emeritus'' (; female: ''emerita'') is an adjective used to designate a retired chair, professor, pastor, bishop, pope, director, president, prime minister, rabbi, emperor, or other person who has been "permitted to retain as an honorary title ...
, Oxford University, 1993–2018 and Emeritus Fellow, Magdalen College, Oxford, 1993–2018. * Honorary President of European Society for Philosophy and Psychology. * Inaugural President of European Brain and Behaviour Society. * President of Association for Scientific Study of Consciousness. Weiskrantz supervised at least 10 PhDs, including Alan Cowey,
Charles Gross Charles Gross (born 13 May 1934) is an American film and TV composer, living in New York City. Gross, born in Boston, Massachusetts, was educated at Harvard University (BA), the New England Conservatory and Mills College (teaching fellowship), a ...
,
Nicholas Humphrey Nicholas Keynes Humphrey (born 27 March 1943) is an English neuropsychologist based in Cambridge, known for his work on evolution of primate intelligence and consciousness. He studied mountain gorillas with Dian Fossey in Rwanda; he was the fi ...
, Susan Iversen, and Melvyn A. Goodale.


Honours

Weiskrantz was elected a Fellow of the
Royal Society The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, re ...
in 1980. He was on its council in 1988–1989. He was a member of the U.S. National Academy of Sciences, and of Academia Europaea. Weiskrantz served on the Council of the Fyssen Foundation. Weiskrantz was a medalist of the Royal Society of Medicine and a medalist of the American Association for Advancement of Science. He delivered the Heisenberg Lecture of the Bavarian Academy of Sciences/Siemens Foundation and the Ferrier Lecture of the Royal Society. In 1997 he was awarded with an honorary doctorate at
Tilburg University Tilburg University is a public research university specializing in the social and behavioral sciences, economics, law, business sciences, theology and humanities, located in Tilburg in the southern part of the Netherlands. Tilburg University h ...
, the Netherlands.


Selected publications

* ''Analysis of Behavioural Change'', 1967 * ''The Neuropsychology of Cognitive Function'', 1982 * ''Animal Intelligence'', 1985 * ''Blindsight: A case Study and Implications'', 1986 * ''Thought Without Language'', 1988 * ''Consciousness Lost and Found'', 1997


References

{{DEFAULTSORT:Weiskrantz, Lawrence 1926 births 2018 deaths Fellows of the Royal Society British Jews Jewish scientists British psychologists Fellows of Magdalen College, Oxford Members of the United States National Academy of Sciences British military personnel of World War II 20th-century American psychologists