September 2005
Volume 5, Issue 8
Free
Vision Sciences Society Annual Meeting Abstract  |   September 2005
Effects of structured backgrounds on the latency of saccadic eye movements
Author Affiliations
  • Brian J. White
    Justus Liebig University, Giessen, Germany
  • Karl R. Gegenfurtner
    Justus Liebig University, Giessen, Germany
  • Dirk Kerzel
    University of Geneva, Switzerland
Journal of Vision September 2005, Vol.5, 585. doi:10.1167/5.8.585
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Brian J. White, Karl R. Gegenfurtner, Dirk Kerzel; Effects of structured backgrounds on the latency of saccadic eye movements. Journal of Vision 2005;5(8):585. doi: 10.1167/5.8.585.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

It has been suggested that remote distractors increase saccadic latency by increasing the firing rate of collicular fixation neurons near the time of target onset, and that the distributed network of these cells might extend as much as 10 deg from the foveal center. Since then several studies have pointed to the superior colliculus as the substrate behind an inhibited saccadic response due to non-target stimulation covering a large portion of the visual field (i.e., a display change). We examined this further by presenting a spatially continuous form of non-target stimulation (a patch of random noise) of various sizes while observers made a saccade to a simultaneously presented peripheral Gabor-target (4 c/deg, 4, 7 or 10 deg, left or right of fixation). A small patch (2.3 × 2.3 deg) of centrally displayed random noise produced a significant increase in saccadic latency consistent with the remote distractor effect. In contrast, a large patch (36 × 36 deg) did not increase latency despite the fact that it also provided raw stimulation to the region representing the fixation zone. This finding is inconsistent with several studies that show an inhibited saccadic response following a large transient onset. We also found a steady decrease in saccade latency as patch size increased from 1.6 × 1.6 deg to 4.5 × 4.5 deg. This confirms that non-target stimulation of the region representing the fixation zone is not in itself sufficient to produce the increase in latency typically found with remote distractors. The results are consistent with the idea that only a spatially confined object leads to a discharge of collicular fixation neurons.

White, B. J. Gegenfurtner, K. R. Kerzel, D. (2005). Effects of structured backgrounds on the latency of saccadic eye movements [Abstract]. Journal of Vision, 5(8):585, 585a, http://journalofvision.org/5/8/585/, doi:10.1167/5.8.585. [CrossRef]
Footnotes
 Funding by the German Federal Ministry of Education and Research.
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×