The Triune Brain Theory constitutes one of the theories underlying the Sabido methodology.
Dr. Paul D. MacLean, a neuroscientist and psychiatrist who developed the intriguing theory of the “triune brain” to explain its evolution and to try to reconcile rational human behavior with its more primal and violent side, died on Dec. 26 in Potomac, Md. He was 94.
Dr. MacLean’s death was confirmed by his family.
In the late 1940s, while he was a young researcher at Yale, Dr. MacLean became interested in the brain’s control of emotion and behavior. After initial studies of brain activity in epileptic patients, he turned to cats, monkeys and other models, using electrodes to stimulate different parts of the brain in conscious animals. He then recorded the animals’ responses and, in the 1950s, began to trace individual behaviors like aggression and sexual arousal to their physiological sources.
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