PSYC 1204 Lecture Notes - Lecture 1: Parenting, Combined Oral Contraceptive Pill, Kinsey Scale
10 Apr 2016
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Motivation: concerns the physiological and psychological process underlying the initiation of behaviours that direct organism toward specific goals. Drives: stimulation that our brain generates to push us to address basic biological needs. Homeostasis :processes that allow us to maintain balance in our biological systems. Allostasis: processes that allow us to develop a state or readiness for anticipated future demands on our biological systems. Satiation: the experience of being full and uninterested in eating anymore. The hypothalamus receives information about glucose levels based on messages sent by special neurons called glycostats. When the hypothalamus receives information about a drop in glucose levels, it stimulates feelings of hunger. When we eat, expansion of our intestines stimulates neurons to release cholecystokinin (cck). When the hypothalamus detects enough cck, it stimulates feelings of satiation. In the environment in which emerges as species, food was hard to come by. In western countries, like canada and us, lack of food is not an issue.
