PSYC 271 Lecture Notes - Lecture 11: Anterior Pituitary, Ventromedial Nucleus Of The Hypothalamus, Posterior Pituitary

• School: Queen's University
• Department: Psychology
• Course: PSYC 271
• Professor: Amanda Maracle

Document Summary

Week eleven motivation (hunger, reproduction & sleep) & Sleep: factors that influence motivated behaviours. In order to function, humans must convert organic material into chemical energy which is stored within the body. Theories fall into 2 different categories: set point theories, positive incentive theories. The main assumption of set point theories is that hunger is a response to an energy need. Therefore, we eat to maintain an energy set point. You have some sort of ideal homeostatic place. The hunger & feeding behaviour is a response of going into the negatives: deviation from the set point value leads to taking in food to go back to the initial set point value. All set-point systems are negative feedback systems systems in which feedback from changes in one direction elicit compensatory effects in the opposite direction. Glucostatic theories: glucose levels determine when we eat (immediate meal initiation & termination: short term energy level indicator.