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Visual vs. spatial contributions to microsaccades and visual-spatial working memory

  • Author(s): Gaunt, JT
  • Bridgeman, B
  • et al.

Published Web Location

http://www.jemr.org/online/7/2/2
No data is associated with this publication.
Abstract

Microsaccade rates and directions were monitored while observers performed a visual working memory task at varying retinal eccentricities. We show that microsaccades generate no interference in a working memory task, indicating that spatial working memory is at least partially insulated from oculomotor activity. Intervening tasks during the memory interval affected microsaccade patterns; microsaccade frequency was consistently higher during concurrent spatial tapping (no visual component) than during exposure to dynamic visual noise (no task). Average microsaccade rate peaked after appearance of a fixation cross at the start of a trial, and dipped at cue onset and offset, consistent with previous results. Direction of stimuli in choice tasks did not influence microsaccade direction, however.

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