PSYC 2230 Study Guide - Critical Role, Comparator, Counterforce

• School: York University
• Department: Psychology
• Course: PSYC 2230
• Professor: Pauline Charlton

Document Summary

Chapter 3: the motivated and emotional brain: the hunger-causing culprit is probably ghrelin, a hormone manufactured in the stomach, circulated in the blood, and detected and monitored by the brain. In a psych experiment those injected with ghrelin pig-out at an all you can eat buffet vs. those who weren"t who just ate a regular meal. In a study, researchers monitored naturally occurring ghrelin levels in adults, and then after some of the adults performed a 3-month diet with rigorous exercise: the results: First, ghrelin was chronically high for the dieters. Second, ghrelin rises and falls throughout the normal day (peaking around breakfast, lunch, etc. ) Third, eating food led to a rapid fall in ghrelin. Biochemical agents stimulate specific brain structures: brain structures have receptor sites on them that endow them with the potential to be stimulated the biochemical agents that stimulate these receptor sites are neurotransmitters and hormones.