PSY 1101 Lecture Notes - Lecture 12: Homeostasis

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: nadean

Document Summary

Internal physiological need creates an aroused state that drives the organism to reduce the need: homeostasis: maintenance of internal balance, hypothalamus involved in most (if not all) of the brain"s set points . P a g e | 5 in sexual activity: mating behavior often involves competition among males, frequently involving fighting. Initiation of sexual activity in primates: hormones play much less of a role in primates, particularly so for humans, the bonobo is probably the champion of sex. They may also engage in sexual activity that cannot possibly lead to pregnancy (oral sex, anal sex): thus, social (not biological) factors play a major role in determining human sexual pregnant. activity, but the social biologists will claim that in actual fact there is an evolutionary reason for engaging in sexual activity throughout the month. The sexual response cycle (masters and johnson: consists of a series of stages, excitement, plateau, orgasm & refractory (or resolution) periods.