PSYC 1000 Lecture Notes - Lecture 7: Vasocongestion, Lateral Hypothalamus, Genital Stage
16 Mar 2016
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Document Summary
A process that influences the direction, persistence, and vigour of goal- directed behaviour. Biological motives: hunger, thirst, sex, sleep, etc. Drive: physiological disruptions to homeostasis produce drives to behave in a certain way i. e. thirst influences drinking. Incentive: a stimuli that pull an organism toward a goal i. e. sweet drink (drink it because it tastes good) Allostasis: motivation that is influenced by the anticipation of future needs (anticipating a physiological imbalance) Eating not necessarily linked to immediate energy needs. Produce drop-rise pattern in glucose (changes in supply of glucose provide signals that help brain regulate hunger) Cholecystokinin (cck) and other peptides released by small intestine into bloodstream, travel to brain. Lateral hypothalamus (lh): involved in starting eating. Eating is positively reinforced by good tastes and negatively reinforced by hunger reduction. Expectations that eating will be pleasurable and will reduce hunger stimulate eating. Beliefs, memories, and attitudes about food can also affect eating.
