TRIUNE BRAIN

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the view, now outmoded, in which the brain contains three layers showing its evolutionary growth. The first and eldest is the archipallium, also called R- complex; the second is the paleo- mammalian system, also called the limbic system; and the most recently developed is the neopallium, also known as the neocortex.

TRIUNE BRAIN: "The concept of the triune brain was posited by Paul D. MacLean, an American doctor and neurophysiologist."
Cite this page: N., Sam M.S., "TRIUNE BRAIN," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/triune-brain/ (accessed June 26, 2022).

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