Top-down control of saccades requires inhibition of suddenly appearing stimuli.

ABSTRACT: Humans scan their visual environment using saccade eye movements. Where we look is influenced by bottom-up salience and top-down factors, like value. For reactive saccades in response to suddenly appearing stimuli, it has been shown that short-latency saccades are biased towards salience, and that top-down control increases with increasing latency. Here, we show, in a series of six experiments, that this transition towards top-down control is not determined by the time it takes to integrate value information into the saccade plan, but by the time it takes to inhibit suddenly appearing salient stimuli. Participants made consecutive saccades to three fixation crosses and a vertical bar consisting of a high-salient and a rewarded low-salient region. Endpoints on the bar were biased towards sa

SUBMITTER: Wolf C 

PROVIDER: S-EPMC7593282 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature