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Université de Fribourg

Discrete coding of reward probability and uncertainty by dopamine neurons

Fiorillo, Christopher D. ; Tobler, Philippe N ; Schultz, Wolfram

In: Science, 2005, vol. 299, no. 5614, p. 1898 - 1902

Uncertainty is critical in the measure of information and in assessing the accuracy of predictions. It is determined by probability P, being maximal at P = 0.5 and decreasing at higher and lower probabilities. Using distinct stimuli to indicate the probability of reward, we found that the phasic activation of dopamine neurons varied monotonically across the full range of...

Université de Fribourg

Adaptive coding of reward value by dopamine neurons

Tobler, Philippe N. ; Fiorillo, Christopher D. ; Schultz, Wolfram

In: Science, 2001, vol. 307, no. 5715, p. 1642-1645

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...

See also: similar author names
2 Tobler, Philip
1 Tobler, Philippe
1 Tobler, Philippe N