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HUNGER, THIRST, SEX (hunger (biological explanation (lipostatic hypothesis…
HUNGER, THIRST, SEX
hunger
biological explanation
homeostatic regulation model
efficiency of primary reinforcers
hypothalamus
ventromedial hypothalamus
feeding
lateral hypothalamus
stop eating
leptin
feedback loop bw signals from hypothamalus and the stomaach
blood glucose
forms the basis for the glucostalic hypothesis
with the income of inusulin, glucose decreases
proven to be "wrong"
diabetes
glucose lvls could rise for more reasons
lipostatic hypothesis
states that fat is the substance regulating hunger
decrease in fat --> starvation
leptin
hormones secreted by fat cells
may be the substance used by the brain to monitor the amount of fat in the body
eating disorders
Anorexia nervosa
an individual being 15% below ideal body weight
body dismorphia
distorted body image
bulimia nervosa
alternating binging and purging
sex
motivation to reproduce
hypothalamus
stimulates the pituitary gland
produce estrogens, androgens
sexual hormones
thirst
lateral hypothalamus
motivates drinking
lesions
preoptic area
excessive drinking