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- W2055906268 abstract "Basing higher-order decisions on expected value (reward probability x reward magnitude) maximizes an agent's accruement of reward over time. The goal of this study was to determine whether the advanced preparation of simple actions reflected the expected value of the potential outcomes. Human subjects were required to direct a saccadic eye movement to a visual target that was presented either to the left or right of a central fixation point on each trial. Expected value was manipulated by adjusting the probability of presenting each target and their associated magnitude of monetary reward across 15 blocks of trials. We found that saccadic reaction times (SRTs) were negatively correlated to the relative expected value of the targets. Occasionally, an irrelevant visual distractor was presented before the target to probe the spatial allocation of saccadic preparation. Distractor-directed errors (oculomotor captures) varied as a function of the relative expected value of, and the distance of distractors from, the potential valued targets. SRTs and oculomotor captures were better correlated to the relative expected value of actions than to reward probability, reward magnitude, or overall motivation. Together, our results suggest that the level and spatial distribution of competitive dynamic neural fields representing saccadic preparation reflect the relative expected value of the potential actions." @default.
- W2055906268 created "2016-06-24" @default.
- W2055906268 creator A5021900878 @default.
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- W2055906268 date "2007-05-02" @default.
- W2055906268 modified "2023-10-12" @default.
- W2055906268 title "The Influence of Expected Value on Saccadic Preparation" @default.
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- W2055906268 doi "https://doi.org/10.1523/jneurosci.0577-07.2007" @default.
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