PSYC 1010 Chapter 10: Psych 1010 Chapter Ten

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Myriam Mongrain

Document Summary

Incentive theories propose that external stimuli regulate motivational states. Incentive: an external goal that has the capacity to motivate behaviour: drive and incentive models of motivation are often contrasted as push-versus-pull theories. Actions that increase blood glucose level can make people feel satiated: hormonal regulation, a variety of hormones circulating in the bloodstream also contribute to the regulation of hunger. Insulin is a hormone secreted by the pancreas. It must be present for cells to extract glucose from the blood. The secretion of insulin is associate with increased hunger: ghrelin is secreted by the stomach when one goes without food for a while. This causes stomach contractions and promotes hunger: cck is released by the upper intestine after food is consumed which delivers satiety signals to the brain and reduces hunger. Leptin is produced by fat cells throughout the body and released into the bloodstream.