PSYC 318 Lecture Notes - Lecture 3: Laxative, Binge Eating, 5-Ht2C Receptor
27 Feb 2014
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Week 3, class 1: hunger and eating (2) External appearance smell & taste variety social factors etc. Integration of information leads to control of food intake: most feeding has even less to do with immediate physiological need in today"s obesigenic environment , food is widely available to us, for our ancestors: food was not always available. Variety: sensory specific satiety: declining satisfaction generated by consumption of certain type of food, and the consequent renewal in appetite resulting from the exposure to new food, rats ate more with a non-varied diet. Sensory-specific satiety : firing of cells in the lateral hypothalamus in response to food stimulus, feed monkey, observe cell firing, monkey"s hungry: wide range of food stimuli increases cell firing in the lateral hypothalamus. eating peanuts, oranges, bananas or a glucose solution increased cell firing. glucose no longer increases cell firing but other food does: monkey sated with bananas:
