PSY 3109 Lecture Notes - Lecture 2: Autonomic Nervous System, Ghrelin, Hypothalamus

• School: University of Ottawa
• Department: Psychology
• Course: PSY 3109
• Professor: Daniel Bentley

Document Summary

Brain: thinking brain cognitive and intellectual functions, motivated brain whether you want to do it, emotional brain what your mood is while doing it. This idea is not anatomically or physiologically accurate. Speci c brain structures generate speci c motivational states. Day-to-day events stir biochemical agents into action: ex: count back from 3,000 by 3 while ripping up paper will become agitated for no reason. Food deprivation activates the ghrelin release that stimulates the hypothalamus to create hunger. Environmental event (food deprivation) biochemical agent (ghrelin, hormone produced and circulated in the bloodstream) brain structure (ghrelin stimulates hypothalamus) . Aroused motivation (stimulated hypothalamus creates psychological experience of hunger) Good event activates the dopamine release that stimulates positive a ect. Environment event (unexpected pleasant event occurs) biochemical agent (dopamine, neurotransmitter released and circulated into brain circuit) brain structure (dopamine stimulates limbic structures) aroused emotion (feeling good, pleasure and positive a ect)