GP_Mot_hunger_2007 - Motivation to eat Drives and...

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Unformatted text preview: Motivation to eat Drives and Incentives Optimum Arousal Hierarchy of Needs Hunger Physiology Psychology Obesity Drives and Incentives Drive reduction theory Physiological need creates an aroused tension state (a drive) that motivates an organism to satisfy the need. Homeostasis The goal of drive reduction is to maintain a steady internal state. Incentives We are also driven to reduce drives by positive or negative stimuli. Past history of incentives is important. Optimum Arousal Without arousal we feel driven to experience stimulation. With too much arousal we experience too much stress. Physiology of Hunger Body Chemistry When Glucose is low, we feel hungry. The Brain Lateral Hypothalamus Activity here brings on hunger (orexin). Damage here decreases appetite. Ventromedial Hypothalamus Activity here decreases appetite. Damage here increases appetite Physiology of Hunger Set point The point at which an individuals weight...
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GP_Mot_hunger_2007 - Motivation to eat Drives and...

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