Dissociating oculomotor contributions to spatial and feature-based selection

D. Jonikaitis, J. Theeuwes

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Saccades not only deliver the high-resolution retinal image requisite for visual perception, but processing stages associated with saccade target selection affect visual perception even before the eye movement starts. These presaccadic effects are thought to arise from two visual selection mechanisms: spatial selection that enhances processing of the saccade target location and feature-based selection that enhances processing of the saccade target features. By measuring oculomotor performance and perceptual discrimination, we determined which selection mechanisms are associated with saccade preparation. We observed both feature-based and space-based selection during saccade preparation but found that feature-based selection was neither related to saccade initiation nor was it affected by simultaneously observed redistribution of spatial selection. We conclude that oculomotor selection biases visual selection only in a spatial, feature-unspecific manner. © 2013 the American Physiological Society.
Original languageEnglish
Pages (from-to)1525-1534
JournalJournal of Neurophysiology
Volume25
Issue number10
DOIs
Publication statusPublished - 2013

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