reward and reinforcement activity in the nucleus accumbens during learning
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2014
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The nucleus accumbens core (NAcc) has been implicated in learning associations between sensory cues and profitable motor responses. However, the precise mechanisms that underlie these functions remain unclear. We recorded single-neuron activity from the NAcc of primates trained to perform a visual-motor associative learning task. During learning, we found two distinct classes of NAcc neurons. The first class demonstrated progressive increases in firing rates at the go-cue, feedback/tone and reward epochs of the task, as novel associations were learned. This suggests that these neurons may play a role in the exploitation of rewarding behaviors. In contrast, the second class exhibited attenuated firing rates, but only at the reward epoch of the task. These findings suggest that some NAcc neurons play a role in reward-based reinforcement during learning.
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gale2014frontiersreward
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| Authors | ;John Thomas Gale;Donald C Shields;Yumiko eIshizawa;Emad N Eskandar |
| Journal | lasers in manufacturing and materials processing |
| Year | 2014 |
| DOI | 10.3389/fnbeh.2014.00114 |
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