Modulation of Saccade Vigor during Value-Based Decision Making.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Thomas R ReppertReza Shadmehr

Abstract

During value-based decision-making, individuals consider the various options and select the one that provides the maximum subjective value. Although the brain integrates abstract information to compute and compare these values, the only behavioral outcome is often the decision itself. However, if the options are visual stimuli, during deliberation the brain moves the eyes from one stimulus to the other. Previous work suggests that saccade vigor, i.e., peak velocity as a function of amplitude, is greater if reward is associated with the visual stimulus. This raises the possibility that vigor during the free viewing of options may be influenced by the valuation of each option. Here, humans chose between a small, immediate monetary reward and a larger but delayed reward. As the deliberation began, vigor was similar for the saccades made to the two options but diverged 0.5 s before decision time, becoming greater for the preferred option. This difference in vigor increased as a function of the difference in the subjective values that the participant assigned to the delayed and immediate options. After the decision was made, participants continued to gaze at the options, but with reduced vigor, making it possible to infer timing of ...Continue Reading

Citations

Feb 3, 2016·Proceedings of the National Academy of Sciences of the United States of America·Sung Jun JooAlexander C Huk
Mar 26, 2016·Current Opinion in Neurobiology·Joshua T Dudman, John W Krakauer
Jul 5, 2016·Current Biology : CB·Reza ShadmehrAlaa A Ahmed
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Jan 6, 2017·Journal of Neurophysiology·Reza Shadmehr
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May 7, 2020·Journal of Neurophysiology·Tehrim YoonReza Shadmehr
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Related Concepts

Teens
Adult
Attention
Decision Making
Females
Homo sapiens
Impulsive Behavior
Males
Continuous Performance Task
Photic Stimulation

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