M25Hunger

M25Hunger - MODULE 25: HUNGER MOTIVATION QUESTIONS I. In...

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MODULE 25: HUNGER MOTIVATION QUESTIONS I. In what direction is our behavior motivated? II. What motivates us to initiate certain behaviors? III. How intensely do we pursue certain behaviors? IV. Why do people differentially persist at particular behavior? MOTIVATION MODELS I. Drive theory a. Hull, physiological needs b. Drive reduction c. If needs not met, drive energizes behavior II. Negative feedback—homeostasis—“steady state” III. Feedforward—system anticipates needs IV. Positive feedback—performing behavior is reinforcing—promotes continuing behavior V. Clinical approaches a. Maslow’s hierarchy of needs i.Certain needs have priority over others ii.Physiological needs have higher priority than psychological needs PHYSIOLOGY OF HUNGER I. Introductory ideas a. Levels of blood glucose monitored by receptors, send signals to hypothalamus Effects of lowered food intake II. Brain mechanisms—hypothalamic nuclei a. Lateral hypothalamus (LH) i.“hunger center” ii.LH rats become terminally anorexia
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M25Hunger - MODULE 25: HUNGER MOTIVATION QUESTIONS I. In...

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