PSYC 110 Lecture Notes - Lecture 17: Arcuate Nucleus, Neuropeptide, Leptin
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If (cid:455)ou do(cid:374)"t ha(cid:448)e lepti(cid:374), (cid:455)ou eat way more tha(cid:374) (cid:455)ou (cid:374)eed (cid:271)e(cid:272)ause never feel satiated: ghrelin: hunger, whe(cid:374) (cid:455)ou"re lo(cid:449) o(cid:374) (cid:272)alories, ghreli(cid:374) gets released, sti(cid:373)ulates (cid:455)our energy and makes you hungry, sensory specific satiety, get notes. You have renewed sense of yeah i can eat that. Motivational drives: goal directed behaviors incentives, reinforcers, rewards. Rewards: wanting= appetitive behavior, desire to obtain a reward, ex. Sitting in class dreaming about the perfect meal: liking= consummatory behavior, subject feeling of pleasure or satisfaction, ex. Eating perfect meal: reinforcement, effect of the reward on learning. Intracranial self stimulation (icss: gave rodents small shock of electricity and it would stay in the environment where it happened _____notes, how much are they lever pressing, 1920 bar presses in an hour. Important for reward processing and in the liking/ wanting/ consummatory phase: the release of dopamine in this area is associated with wanting, the release of endorphins is associated with liking.
