June 2006
Volume 6, Issue 6
Free
Vision Sciences Society Annual Meeting Abstract  |   June 2006
Saccade-related direction-selective activation in visual cortex
Author Affiliations
  • Joy J. Geng
    Institute of Cognitive Neuroscience, University College London
  • Christian C. Ruff
    Institute of Cognitive Neuroscience, University College London, and Wellcome Department of Imaging Neuroscience, University College London
  • Jon Driver
    Institute of Cognitive Neuroscience, University College London, and Wellcome Department of Imaging Neuroscience, University College London
Journal of Vision June 2006, Vol.6, 498. doi:10.1167/6.6.498
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      Joy J. Geng, Christian C. Ruff, Jon Driver; Saccade-related direction-selective activation in visual cortex. Journal of Vision 2006;6(6):498. doi: 10.1167/6.6.498.

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Abstract

We investigated the effect of directional saccades on visual cortex using fMRI. A location in either the upper right or upper left visual quadrant was cued as the saccade target on each trial. After an empty delay period, an auditory cue signaled whether to make the saccade, ‘go’; or to remain fixated, ‘no-go’. Activation was found in the lingual gyrus contralateral to the cued saccade direction. While this applied for both ‘go’ and ‘no-go’ trials, the direction-specific effects were larger in the ‘go’ condition. These results suggest that preparing a saccade to a remembered location produces activation in visual cortex specific to the location of the anticipated saccade, with execution of the saccade leading to stronger activation. Individual retinotopic mapping suggests quadrant-specific activations affecting the earliest stages of visual cortex.

Geng, J. J. Ruff, C. C. Driver, J. (2006). Saccade-related direction-selective activation in visual cortex [Abstract]. Journal of Vision, 6(6):498, 498a, http://journalofvision.org/6/6/498/, doi:10.1167/6.6.498. [CrossRef]
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