Dynamic integration of reward and stimulus information in perceptual decision-making.

ABSTRACT: In perceptual decision-making, ideal decision-makers should bias their choices toward alternatives associated with larger rewards, and the extent of the bias should decrease as stimulus sensitivity increases. When responses must be made at different times after stimulus onset, stimulus sensitivity grows with time from zero to a final asymptotic level. Are decision makers able to produce responses that are more biased if they are made soon after stimulus onset, but less biased if they are made after more evidence has been accumulated? If so, how close to optimal can they come in doing this, and how might their performance be achieved mechanistically? We report an experiment in which the payoff for each alternative is indicated before stimulus onset. Processing time is controlled by a "go" c

SUBMITTER: Gao J 

PROVIDER: S-EPMC3048391 | biostudies-literature | 2011 Mar

REPOSITORIES: biostudies-literature