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- W2076741191 abstract "Lesion studies demonstrate that the basolateral amygdala complex (BLA) is important for assigning motivational significance to sensory stimuli, but little is known about how this information is encoded. We used in vivo electrophysiology procedures to investigate how the amygdala encodes motivating and reinforcing properties of cues that induce reinstatement of reward-seeking behavior. Two groups of rats were trained to respond to a sucrose reward. The paired group was trained with a reward-predictive cue, whereas the unpaired group was trained with a randomly presented cue. Both groups underwent identical extinction and reinstatement procedures during which the reward was withheld. The proportion of neurons that were phasically cue responsive during reinstatement was significantly higher in the paired group (46 of 100) than in the unpaired group (8 of 112). Cues that induce reward-seeking behavior can do so by acting as incentives or reinforcers. Distinct populations of neurons responded to the cue in trials in which the cue acted as an incentive, triggering a motivated reward-seeking state, or as a reinforcer, supporting continued instrumental responding. The incentive motivation-encoding population of neurons (34 of 46 cue-responsive neurons; 74%) extinguished in temporal agreement with a decrease in the rate of instrumental responding. The conditioned reinforcement-encoding population of neurons (12 of 46 cue-responsive neurons; 26%) maintained their response for the duration of cue-reinforced instrumental responding. These data demonstrate that separate populations of cue-responsive neurons in the BLA encode the motivating or reinforcing properties of a cue previously associated with a reward." @default.
- W2076741191 created "2016-06-24" @default.
- W2076741191 creator A5042426441 @default.
- W2076741191 creator A5058194958 @default.
- W2076741191 date "2007-04-11" @default.
- W2076741191 modified "2023-10-16" @default.
- W2076741191 title "Amygdala Neurons Differentially Encode Motivation and Reinforcement" @default.
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- W2076741191 doi "https://doi.org/10.1523/jneurosci.5281-06.2007" @default.
- W2076741191 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6672525" @default.
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