Humans-and only humans-have an enormous cerebral cortex. Monkeys have a substantial cerebral cortex. Rabbits have a little more, cats a bit more. opossums, have only a thin layer of cerebral cortex. The cerebral cortex (or neocortex) is the newest, outermost area of our brains. Thomas Lewis, Fari Amini, and Richard Lannon Mammals evolved brains hardwired for mother-child and other relationships. Mammals, unlike reptiles, care for their young. The physiological features unique to mammals are in the limbic brain, e.g., the hypothalamus system for keeping us warm. This is the middle layer of our brains, surrounding the reptilian brain. It enables aggression, mating, and reaction to immediate danger. The reptilian brain controls the heart, lungs, and other vital organs. The oldest, deepest, and smallest area is the reptilian brain. Our brains comprise three distinct structures, representing three evolutionary periods. Two million years is short in evolutionary time. Our ancestors' brains began to enlarge about two million years ago. a big brain doesn't make you run faster or survive colder weather). Intelligence has many costs, yet doesn't directly help an animal survive (e.g. Large brains are easily injured, and make childbirth difficult. Brains require maintaining a constant temperature. Our brains are about four times bigger than chimpanzees' and gorillas' brains.īrains use twenty times the calories of muscles at rest. Large brains are humans' most distinctive anatomical feature. You can help make it neutral, request assistance, or view the relevant discussion. GNU Free Documentation License The Science of Relationships The Evolution of the Human BrainĪ Wikibookian questions the neutrality of this page.Hades-Persephone General About This Book.Conflict In Relationships Personality Types Emotional Control Systems.The Science of Relationships The Evolution of the Human Brain If you have saved this file to your computer, click on a link in the contents to go to that section. A copy of the license is included in the section entitled "GNU Free Documentation License". Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. You won't see this message or any elements not part of the book's content when you print or preview this page. This is the print version of Relationships
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