PS102 Lecture Notes - Lecture 10: Classical Conditioning, Autonomic Nervous System, Operant Conditioning
Document Summary
Motivation to act occurs to enhance reproductive success. Drive theories: were motivated to act because of a internal state of tension. Hunger = tension that we are motivated to alleviate. Homeostasis: state of physiological equilibrium or stability. Incentive theories: motivated to act by external goals. Neural circuitry: hunger signals pass through the neural circuits of hypothalamus. Vagus nerve: carries information about stretching the stomach when you"re full. Changes are sensed by arcuate nucleus in the hypothalamus. The higher the glucose, the fuller you feel. The lower the glucose, the hungrier you feel. Grehin: stomach secretes this to make you hungrier by causing stomach contractions. Viewing palatable (tasty) food triggers increase in insulin leading to hunger. Normative cues: socially appropriateness of the situation. Presence of others: eat more with other people than alone. Variety: increase consumption by eating different things. Quantity available: consume what"s in front of you. Operant conditioning: rewards for eating certain foods (i. e. vegetables)
