期刊
NATURE NEUROSCIENCE
卷 23, 期 2, 页码 176-+出版社
NATURE PORTFOLIO
DOI: 10.1038/s41593-019-0574-1
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资金
- Intramural Research Program at the NIDA
- Canada Research Chair's program
- Natural Sciences and Engineering Research Council of Canada
- Natural Sciences and Engineering Research Council of Canada Undergraduate Student Research Award
- Concordia University Undergraduate Research Award
- NATIONAL INSTITUTE ON DRUG ABUSE [ZIADA000587] Funding Source: NIH RePORTER
Maes et al. use second-order conditioning, blocking and optogenetic inhibition to show that cue-evoked dopamine transients function as temporal-difference prediction errors rather than reward predictions. Reward-evoked dopamine transients are well established as prediction errors. However, the central tenet of temporal difference accounts-that similar transients evoked by reward-predictive cues also function as errors-remains untested. In the present communication we addressed this by showing that optogenetically shunting dopamine activity at the start of a reward-predicting cue prevents second-order conditioning without affecting blocking. These results indicate that cue-evoked transients function as temporal-difference prediction errors rather than reward predictions.
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