Systematic diagonal and vertical errors in antisaccades and memory-guided saccades

  • Mathias Abegg University of Bern
  • Hyung Lee Keimyung University
  • Jason J. S. Barton University of British Columbia
Keywords: saccade, bias, accuracy

Abstract

Studies of memory-guided saccades in monkeys show an upward bias, while studies of antisaccades in humans show a diagonal effect, a deviation of endpoints toward the 45° diagonal. To determine if these two different spatial biases are specific to different types of saccades, we studied prosaccades, antisaccades and memory-guided saccades in humans. The diagonal effect occurred not with prosaccades but with antisaccades and memory-guided saccades with long intervals, consistent with hypotheses that it originates in computations of goal location under conditions of uncertainty. There was a small upward bias for memory-guided saccades but not prosaccades or antisaccades. Thus this bias is not a general effect of target uncertainty but a property specific to memory-guided saccades.
Published
07-09-2010
How to Cite
Abegg, M., Lee, H., & Barton, J. J. S. (2010). Systematic diagonal and vertical errors in antisaccades and memory-guided saccades. Journal of Eye Movement Research, 3(3). https://doi.org/10.16910/jemr.3.3.5
Section
Articles