PSY 150A1 Lecture Notes - Lecture 18: Body Image, Fidgeting, 5-Ht Receptor

• School: University of Arizona
• Department: Psychology Main
• Course: PSY 150A1
• Professor: Lazarwicz

Document Summary

Motivation: need or desire that energizes and directs behavior. How does the instinct label promote understanding: 2. Physiological needs -> drive to meet those needs. Motivated to restore homeostasis (balance of body temperature, hunger, thirst, sleep, etc. : 3. Optimum arousal theory: desire to avoid stimuli that are too boring or too arousing. Best performance at intermediate level of arousal. Predicts preferences for patterns, art, music, etc: 4. Hierarchy of needs: fundamental needs (bottom of pyramid) need to be met before moving up. Self-a(cid:272)tualizatio(cid:374): realizi(cid:374)g o(cid:374)e"s pote(cid:374)tial: physiological -> safety -> love/belonging -> esteem -> self- actualization. Physiological influences on hunger: feedback from stomach, intestines, liver, brain monitors glucose levels (hypothalamus) Filli(cid:374)g rat"s sto(cid:373)a(cid:272)h (cid:449)ith salt(cid:449)ater redu(cid:272)es hu(cid:374)ger less tha(cid:374) (cid:373)ilk. Hypothalamus and hunger: lateral hypothalamus: initiates hunger. Lesioned -> no interest in food: ventromedial hypothalamus (bottom): suppresses hunger. Lesioned -> continuous eating: set point theory: hypothalamus strives to maintain optimum body point (set point)