PSYA02H3 Lecture Notes - Lecture 11: Cybersex, Scientific Modelling, Insulin
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PSYA02H3 Full Course Notes
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Allostasis: motivation is not only influenced by current needs, but also by the anticipation of future needs. The need to consume enough nutrients so that you have enough energy to function involves physiological responses as well as more complex cognitive and emotional factors. Researchers have found that electrically stimulating the lateral hypothalamus causes rats to begin to eat; thus, this structure may serve as an on switch: stimulating the ventromedial region of the hypothalamus causes rats to stop eating. Damaging the off switch leads to obesity because animals don"t stop eating: brain influences your body and your body influences your brain. Glucose: a sugar that serves as a primary energy source for the brain and the rest of the body: specialized neurons (glucostats) detect glucose levels in the fluid outside of the cell. Too low = gluostats signal the hypothalamus that energy supplies are low, increasing hunger.
