PSYC 1000 Lecture 5: Nov 1st lecture- motivation and Hunger

• School: University of Guelph
• Department: Psychology
• Course: PSYC 1000
• Professor: Paula Barata

Document Summary

The physiological and psychological processes underlying the initiation of behaviours and direct organisms toward specific goals. Drive reduction theory ( a motivation theory) Drive has two components ( need for water) (state- for being thirsty) Drive reducing behaviours ( eating, drinking)- therefor engage in these. Homeostasis: a tendency to maintain a balanced internal state or psychological equilibrium. Physiology of hunger full stomach releases different hormones( eg. cck) Stomach contraptions and release of hormones( eg. ghrelin) A sugar the serves as an energy source. Different areas regulate appetite suppression ( ventromedial & paraventricular regions) and appetite stimulation ( lateral region) Detects changes in stomach( through hormone release) Time of day ( tie since last meal) Stress may indicate the need for future resources (allostasis) Bottomless soup bowl study food unit size. Weight control: naturally through energy homeostasis we maintain our set point , less of a set point and more of a settling point.