Adaptive Coding of Reward Value by Dopamine Neurons

by: Philippe N Tobler, Christopher D Fiorillo, Wolfram Schultz

Science, Vol. 307, No. 5715. (11 March 2005), pp. 1642-1645.

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Abstract

It is important for animals to estimate the value of rewards as accurately as possible. Because the number of potential reward values is very large, it is necessary that the brain's limited resources be allocated so as to discriminate better among more likely reward outcomes at the expense of less likely outcomes. We found that midbrain dopamine neurons rapidly adapted to the information provided by reward-predicting stimuli. Responses shifted relative to the expected reward value, and the gain adjusted to the variance of reward value. In this way, dopamine neurons maintained their reward sensitivity over a large range of reward values.

@article{citeulike:121661, abstract = {It is important for animals to estimate the value of rewards as accurately as possible. Because the number of potential reward values is very large, it is necessary that the brain's limited resources be allocated so as to discriminate better among more likely reward outcomes at the expense of less likely outcomes. We found that midbrain dopamine neurons rapidly adapted to the information provided by reward-predicting stimuli. Responses shifted relative to the expected reward value, and the gain adjusted to the variance of reward value. In this way, dopamine neurons maintained their reward sensitivity over a large range of reward values.}, author = {Tobler, Philippe N. and Fiorillo, Christopher D. and Schultz, Wolfram }, citeulike-article-id = {121661}, doi = {10.1126/science.1105370}, journal = {Science}, keywords = {decision-making, dopamine, learning, monkey, motivation, neuroeconomics, reinforcement, reward}, month = {March}, number = {5715}, pages = {1642--1645}, posted-at = {2005-05-24 23:52:02}, priority = {2}, title = {Adaptive Coding of Reward Value by Dopamine Neurons}, url = {http://dx.doi.org/10.1126/science.1105370}, volume = {307}, year = {2005} }

RIS record

TY - JOUR ID - citeulike:121661 L3 - citeulike-article-id:121661 TI - Adaptive Coding of Reward Value by Dopamine Neurons JF - Science VL - 307 IS - 5715 SP - 1642 EP - 1645 N2 - It is important for animals to estimate the value of rewards as accurately as possible. Because the number of potential reward values is very large, it is necessary that the brain's limited resources be allocated so as to discriminate better among more likely reward outcomes at the expense of less likely outcomes. We found that midbrain dopamine neurons rapidly adapted to the information provided by reward-predicting stimuli. Responses shifted relative to the expected reward value, and the gain adjusted to the variance of reward value. In this way, dopamine neurons maintained their reward sensitivity over a large range of reward values. KW - decision-making KW - dopamine KW - learning KW - monkey KW - motivation KW - neuroeconomics KW - reinforcement KW - reward AU - Tobler, Philippe AU - Fiorillo, Christopher AU - Schultz, Wolfram PY - 2005/03/11/ UR - http://dx.doi.org/10.1126/science.1105370 ER -

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