2.2+motivation+and+regulation+of+states

2.2+motivation+and+regulation+of+states - 1 Motivation...

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Unformatted text preview: 1 Motivation & the Regulation of Internal States From the Previous Class ... Drugs, addiction, & reward : Psychoactive drugs: How do the following work? agonists antagonists opiates Addiction: What is the mesolimbocortical system? What factors affect dopamine activity? How is addiction treated? What are some inherited causes of addiction? depressants stimulants psychedelics marijuana Todays Questions Motivation & regulation of internal states : Motivation & homeostasis: What are the theories of motivation, & what are some examples of homeostatic drives? Hunger: What is the role of taste? How is food digested & metabolized? How does the hypothalamus control eating behaviors? Eating disorders: What are the characteristics, causes, & treatment options for obesity, anorexia, & bulimia? 2 Motivation & Homeostasis Theoretical approaches to motivation : Instinct theory: behavior is guided by desire to follow unlearned instincts Incentive theory: behavior is guided by desire to obtain incentives Arousal theory: behavior is guided by desire to maintain optimum level of arousal Drive theory: behavior is guided by desire to maintain homeostasis /equilibrium (of tissue or brain states) Motivation & Homeostasis Homeostatic drives : Temperature regulation: Body temp drops below set point shivering, metabolism, constriction of peripheral blood vessels Body temp rises above set point sweating, metabolism, dilation of peripheral blood vessels Preoptic area of hypothalamus serves as thermostat 98.2 Motivation & Homeostasis Homeostatic drives : Thirst: Osmotic thirst = cell fluid drops below set point Hypovolemic thirst = blood fluid drops below set point Signals relevant to both are sent to preoptic area of hypothalamus, which induces drinking 3 Hunger: A Complex Drive The role of taste : Particular nutrients have particular tastes:...
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This note was uploaded on 09/30/2011 for the course PSY 4322 taught by Professor Natalieceballos during the Fall '11 term at Texas State.

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2.2+motivation+and+regulation+of+states - 1 Motivation...

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