PSYCH101 Chapter Notes - Chapter 11: Bulimia Nervosa, Eating Disorder, Menstrual Cycle

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH101
• Professor: Steve Joordan

Document Summary

Motivation concerns the physiological and psychological processes underlying the initiation of behaviors that direct organisms toward specific goals. Homeostasis the body"s physiological processes that allow it to maintain consistent internal states in response to the outer environment. Psychologist view motives as consisting of 2 main parts: Drives physiological triggers that tell us we may be deprives of something and cause us to seek out what is needed, such as food. Incentives (or goals) the stimuli we seek to reduce the drives such as social approval and companionship, food, water and other needs. Satiation the point in a meal when we are no longer motivated to eat. The on/off switches involved in hunger can be found in a few regions of the hypothalamus. Lateral hypothalamus on switch (in rats anyways) Ventromedial region off switch (damage to this area = obesity in lab animals) Paraventricular nucleus also signals it"s time to stop eating by inhibiting (restricting) the lateral hypothalamus.