PSYC 127 Study Guide - Midterm Guide: Dopamine Receptor D2, Zygosity, Radioligand
Document Summary
Volkow et al. , 2002, "nonhedonic" food motivation in humans involves dopamine in the. What does this mean?: the repeated anova showed significant differences across the conditions for. 2002: in the current study, the exposure to the cocaine video was a strong reward predictor (by its long conditioning history), but subjects in the study were aware that drug reward (actual cocaine) would not be available. Small et al. , 2003, feeding-induced dopamine release in dorsal striatum correlates with meal pleasantness ratings in healthy human volunteers : this paper uses similar techniques as the other two pet scan papers for today. Cohen et al. , 2012, neuron-type-specific signals for reward and punishment in the ventral tegmental area . They identified firing patterns when rat was presented with conditioned and unconditioned stimulus. Type 1: showed phasic excitation in response to reward-predicting odor; sensitive to actual outcomes (whether reward was expected, or unexpectedly omitted) Type 2: showed sustained excitation to reward predicting odor.
