9.Motivation

9.Motivation - 1 Important Notice Concerning Lecture...

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Unformatted text preview: 1 ** Important Notice Concerning Lecture Material ** • This file includes most, but not all, overhead material presented in lecture (e.g., some material may be altered or added in las minute changes) added in last-minute changes). • The best use of this file is to print it out and take notes on them during lectures. Æ WARNING: Perfect knowledge of this material will not 1.1 Introduction 1.1 Introduction guarantee an A in the course. That is, important details will be presented in lecture but are not presented in this pdf file. Thus, it is very important that you attend lecture and discussion sections. Topic 9: Motivation Basic Drives Hunger/Thirst Survival 1) Introduction & History 2) Research Methods 3) Biological Foundations 4) Brain & Consciousness 5) Sensation & Perception 6) Learning & Reward Motivation: What drives us? Needs... Wants... Preferences -- Avoidances Sex/Mate Reproduction Secondary Drives Fame/Success Grades/$$$ Selection? Selection? 7) Cognitive Psychology 8) Intelligence & Reasoning Pleasure/Curiosity ??? Topic 9: Motivation Psy 1, Spring 2008 2 Factors that Affect Motivation Genetics Genetics Biology Biology Motivation Motivation (hunger, sex, $$) (hunger, sex, $$) Personality Personality Culture Culture Environment Environment Motivational Drives: Hunger • Biology (blood glucose levels signal brain-endocrine system) Feedback Regulation Controls Hunger/Satiety EAT GLUCOSE Æ FAT BRAIN Æ FAT HORMONES Topic 9: Motivation Psy 1, Spring 2008 3 Motivational Drives: Hunger • Biology (blood glucose levels signal brain-endocrine system) ¾ Hypothalamus − Signals for hunger/satiety − VM hypo Æ sends ANS signals for digestion (satiety) − rats in “fat storing” mode − lesions = fat rats Lesion of Ventromedial Hypothalamus Motivational Drives: Hunger • Biology (blood glucose levels signal brain-endocrine system) ¾ Hypothalamus − Signals for hunger/satiety − VM hypo Æ sends ANS signals for digestion (satiety) − rats in “fat storing” mode − lesions = fat rats − Lateral hypo Æ sends brain signals for hunger (neuropeptide Y, strongest appetite stimulator) − lesions= ignore food, starve ¾ Signals regulate hunger: Æ homeostasis and set-point Topic 9: Motivation Psy 1, Spring 2008 4 Motivational Drives: Hunger • Biology (blood glucose levels signal brain-endocrine system) ¾ Hypothalamus ¾ Endocrine system (pituitary) − CCK, intestines signals satiety − high fat Æ leptin Æ brain Æ reduces neuropeptide Y = satiety Motivational Drives: Hunger • Biology (blood glucose levels signal brain-endocrine system) ¾ Hypothalamus ¾ Endocrine System • Genetic (selective factors Genetics (selective factors) ¾ Obesity, advantageous?...
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This note was uploaded on 06/03/2008 for the course PSYCH 1 taught by Professor Shimamura during the Spring '08 term at Berkeley.

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9.Motivation - 1 Important Notice Concerning Lecture...

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