Term
| • Hot day with a cold water in front of you-> drink the water. |
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Definition
| behavioral: external event -> behavior |
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Term
| food deprivation -> hunger-> eat food |
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Definition
| mediational: o External event (food in reach) -> intervening variable -> behavior |
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Term
| • Open a door to retrieve a tin jar containing fruit. |
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Definition
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Term
| o Weighing costs and benefits of actions |
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Definition
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Term
| Food deprivation -> stomach contractions -> hunger (unpleasant) -> Eating |
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Definition
| Cannon's local sign theory |
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Term
| Water deprivation -> dry mouth -> thirst-> drinking |
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Definition
| Cannon's local sign theory |
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Term
| • Room temp -> temp raises too high -> AC kicks on -> room temp (turns off AC) |
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Definition
negative feed back
Temp rising is the input, output= AC |
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Term
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Definition
| • Intracellular dehydration |
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Term
| o Sodium receptors in the liver |
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Definition
| • Intracellular dehydration |
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Term
| o Osmoreceptors in the brain |
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Definition
| • Intracellular dehydration |
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Term
| o Baroreceptors (pressure) |
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Definition
| • Extracellular dehydration |
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Term
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Definition
| • Extracellular dehydration |
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Term
| o Increases water retention via the kidney |
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Definition
| • Renin-angiotensin system |
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Term
| o Increases water retention via the kidney and initiates drinking |
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Definition
| • Antidiuretic hormone (ADH) |
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Term
| humans stop drinking water before tru hydration is restored at the level of cells- why? |
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Definition
| Decreases risk of water intoxication and poses a problems for the thirst system as a negative feedback system |
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Term
| conventional toilet- flush toilet= empty, starts to refill and at a certain point it stops. |
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Definition
negative feedback system
o The output= the water running into the bowl after flushed. Input= water is low |
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Term
| o Drinking salt water effects |
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Definition
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Term
• Glucoreceptors in the liver and portal vein communicate info about glucose availability to the brain.
• Exp: induce by injecting 2-DG a glucose molecule that is radioactive and will bind to receptor and turn it off. Receptos wont know if theres other glucose molecules/any energy at all. |
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Definition
| this make you hungry and is primary input for STH |
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Term
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Definition
Lack insulin needed to use glucose
Often report chronic hunger |
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Term
| • Sight of foods can cause insulin release what is the effect of release on cells? |
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Definition
| o Hunger= low glucose. Glucose absorbed into cells. |
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Term
| • Removing lateral hypothalamus animal causes - weight |
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Definition
| animal loses weight bc it never gets feeding signal |
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Term
| Lateral hypothalamus is damageds = |
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Definition
| = lose motivation to eat, LTH will cause her to starve. |
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Term
| • Potential causes of obesity: hyperinsulinemia |
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Definition
| Excess insulin -> chronic low blood sugar -> greater hunger and biased fat storage |
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Term
| • Potential causes of obesity: Insulin tolerance/ resistance: |
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Definition
Body becomes less sensitive to insulin and must produce more in order to use available glucose.
Can cause pancreas (which produces insulin) to stop functioning properly, further disrupting insulin production and glucose regulation |
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Term
| • Potential causes of obesity: hypothyroidism and lower basal metabolic rate (BMR) |
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Definition
| Under activity of thyroid causes body to burn less excess energy and encourages storage of adipose tissue. |
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Term
Supported clinically by obeservation that obese humans behave similarly to lesioned VMH rats
• Eat less frequently but eat more at each meal
• Exert less effort for food
• Show preference for high fat, high sugar foods. |
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Definition
| o Possible set point issue cause of obesity |
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Term
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Definition
| osmetric dehydration to develop resulting in thirst. |
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Term
| beer and pretzel eaten together freq. will cause you to associate them. Classical conditioning. Learning they go together is eating as a -- |
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Definition
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Term
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Definition
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Term
| Suggests binging may lead to weight gain in some cases. Give ppl milkshakes and ppl will say i was trying to diet, but i blew it/broke the diet so im just going to keep eating= binging. |
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Definition
| Mook’s “what the hell!” effect***read |
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