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Neurosurgery for mental disorder: past and present
Published online by Cambridge University Press: 02 January 2018
Extract
Carlyle Jacobsen and John Fulton, at Yale in the early and mid-1930s, investigated primate frontal lobe function. Following bilateral frontal lobecotomy, monkeys and chimpanzees developed a delayed-response deficit, being unable to perform tasks when there was a significant delay between the stimulus and the required response. There were accompanying behavioural changes, with the animals becoming more placid and lethargic and losing their characteristic inquisitive initiative. They became distractible, with difficulty in maintaining an attention set. They had great difficulty in adapting to changes in the directions of an already learned task, tending to perseverate.
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- Copyright © The Royal College of Psychiatrists 1999
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