PSYC W1001 Chapter Notes - Chapter 12, 8, 9, 13: Availability Heuristic, Leptin, Murder Of Kitty Genovese
12 Apr 2017
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Homeostasis: thermal regulations: in hypothalamus in immediate situations or in anticipation. Liver converses glucose glycon and fatty acids & vice versa anticipates hungersignals. Fatty tissues adipose tissue leptin chemical detected from fat cells (inhibits neurochemicals like neuropeptide y) stop eating. Dual center theory: hypothalamus = go center for eating; ventromedical region = stop center, (simplified) Hypothalamus is only one of go centers for feeding. Why so many cues: safety (back-up systems, different aspects of nutritional needs, different roles in overall control of feeding. Cues to make other cues more persuasive (potentiate) What else contributes to eating: culture, memory hungry. Thrifty gene theory: obesity genetic component: less sensitive to leptin, vulnerable to npy, efficiency in digestive apparatus (extract more calories, metabolic level: less nutrient fuel burned up, more fat stores. Fight or flight : similar sympathetic arousal in both situations: oversimplified many responses, different nature within species. Biological reaction to threat not fit for modernity: comparative method.
