Shorter fixation durations for up-directed saccades during saccadic exploration: A meta-analysis

  • Harold H. Greene University of Detroit Mercy
  • James M. Brown University of Georgia
  • Gregory P. Strauss University of Georgia
Keywords: Eye movement, saccades, fixation duration, saccade direction, meta-analysis

Abstract

Utilizing 23 datasets, we report a meta-analysis of an asymmetry in presaccadic fixation durations for saccades directed above and below eye fixation during saccadic exploration. For inclusion in the meta-analysis, saccadic exploration of complex visual displays had to have been made without gaze-contingent manipulations. Effect sizes for the asymmetry were quantified as Hedge’s g. Pooled effect sizes indicated significant asymmetries such that during saccadic exploration in a variety of tasks, presaccadic fixation durations for saccades directed into the upper visual field were reliably shorter than presaccadic fixation durations for saccades into the lower visual field. It is contended that the asymmetry is robust and important for efforts aimed at modelling when a saccade is initiated as a function of ensuing saccade direction.

Published
02-12-2019
How to Cite
Greene, H. H., Brown, J. M., & Strauss, G. P. (2020). Shorter fixation durations for up-directed saccades during saccadic exploration: A meta-analysis. Journal of Eye Movement Research, 12(8). https://doi.org/10.16910/jemr.12.8.5
Section
Articles