Programming of endogenous and exogenous saccades: evidence for a competitive integration model

J Exp Psychol Hum Percept Perform. 2002 Oct;28(5):1039-54. doi: 10.1037//0096-1523.28.5.1039.

Abstract

Participants were required to make a saccade to a uniquely colored target while ignoring the presentation of an onset distractor. The results provide evidence for a competitive integration model of saccade programming that assumes endogenous and exogenous saccades are programmed in a common saccade map. The model incorporates a lateral interaction structure in which saccade-related activation at a specific location spreads to neighboring locations but inhibits distant locations. In addition, there is top-down, location-specific inhibition of locations to which the saccade should not go. The time course of exogenous and endogenous activation in the saccade map can explain a variety of eye movement data, including endpoints, latencies, and trajectories of saccades and the well-known global effect.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial

MeSH terms

  • Analysis of Variance
  • Eye Movements
  • Goals
  • Humans
  • Models, Psychological
  • Neurophysiology
  • Psychomotor Performance / physiology*
  • Reaction Time
  • Saccades / physiology*
  • Space Perception
  • Visual Perception