Psychology 2220A/B Study Guide - Final Guide: Phineas Gage, Autonomic Nervous System, Fear Conditioning
6 Apr 2016
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Chapter 17: biopsychology of emotion, stress, and health. A reconstruction of the brain injury of phineas gage. The damage focused on the medial prefrontal lobes. The return of phineas gage: clues about the brain from the skull of a famous patient. Expressions of emotion evolve from behaviors that indicate what an animal is likely to do next. If emotional signals are beneficial, they will evolve to more effectively communicate and may lose their original meaning. Opposite messages are often signaled by opposite movements; this is referred to as the principle of antithesis. Threat displays, for example, are beneficial - intimidate victims without the costs and risks of fighting. Two woodcuts from darwin"s 1872 book, the expression of emotions in man and animals, that he used to illustrate the principle of antithesis. The aggressive posture of doge features ears forward, back up, hair up, and tail up; the submissive posture features ears back, back down, hair down, tail down.
