PS102 Lecture Notes - Lecture 11: Anorexia Nervosa, Premarital Sex, Homeostasis
Document Summary
All of the processes that initiate, direct, and sustain behaviour. Motives are needs or desires that direct or energize our behaviour. When motives are internal they push us to act - call these drives. When motives are external (or outside of us) we call them incentives - they pull or entice us to act. Cue in the environment initiates the behaviour. How does it work: autonomic nervous system, sympathetic, parasympathetic. These systems control the compensatory mechanisms: hypothalamus. A need causes internal state of tension - drive. Try to maintain homeostasis - a balanced internal state. Primary drive stems from unlearned motives to satisfy biological needs. Reflexieve compensatory mechanisms, coupled with directed behaviour. Internal cues motivate hunger by stimulating the hypothalamus in the brain, receptors from stomach and intestines and liver. External cues motivate hunger when we see, smell or taste foods that we like. Measures amount of glucose available for metabolic consumption.
