PSYC 1000 Lecture Notes - Lecture 7: Human Sexual Response Cycle, Casual Sex, Bulimia Nervosa
16 Feb 2016
School
Department
Course
Professor
Document Summary
A process that influences the direction, persistence, and vigour of goal- Hunger, thirst, sex, temperature, sleep and rest, Homeostasis: internal physiological equilibrium that the body strives to, requires sensory mechanism, response system, and control directed behaviour. Allostasis: physiological disruptions to homeostasis produce drives to behave in a certain way (ex. Thirst influences drinking: pushes organism into action, stimuli that pull an organism toward a goal (ex. Sweetened: motivation that is influenced by the anticipation of future needs. 17/11/2015: homeostatic mechanisms help regulate eating, eating not necessarily linked to immediate energy needs. Signals that start a meal: decline blood glucose levels, liver converts stored nutrients into glucose, blood glucose levels rise, produce drop-rise pattern in glucose. Changes in supply of glucose provide signals that help. Signals that end a meal brain regulate hunger: stomach and intestinal distention, cholecystokinin (ckk) and other peptides released by small intestine into bloodstream, travel to brain.
