PSY100Y5 Study Guide - Midterm Guide: Human Sexual Activity, Casual Sex, Autonomic Nervous System
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PSY100Y5 Full Course Notes
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Drive theories rely on the physiological mechanism homeostasis (a state of equilibrium or stability in the body). A drive is an internal state of tension that motivates an organism to engage in activities that should reduce this tension. An incentive is an external goal that has the capacity to motivate behaviour. This motivates people to behave in a certain way. Human motives are a product of evolution. Natural selection favors behaviours that maximize reproductive success. Motives can be best understood in terms of their adaptive value. natural selection. Brain regulation: hypothalamus controls the feelings of hunger. Used to believe that it was lateral and ventromedial nucleus of the hypothalamus, but now believed it is the arcuate nucleus and the periventricular nucleus. Glucose and digestive regulation: decrease in glucose = increase in hunger, glucostatic theory proposed that fluctuations in blood glucose level are monitored in the brain where they influence hunger. Hormonal regulation: secretion of insulin = increase in hunger.
