Neural correlates of intra-saccadic motion perception

J Vis. 2021 Oct 5;21(11):19. doi: 10.1167/jov.21.11.19.

Abstract

Retinal motion of the visual scene is not consciously perceived during ocular saccades in normal everyday conditions. It has been suggested that extra-retinal signals actively suppress intra-saccadic motion perception to preserve stable perception of the visual world. However, using stimuli optimized to preferentially activate the M-pathway, Castet and Masson (2000) demonstrated that motion can be perceived during a saccade. Based on this psychophysical paradigm, we used electroencephalography and eye-tracking recordings to investigate the neural correlates related to the conscious perception of intra-saccadic motion. We demonstrated the effective involvement during saccades of the cortical areas V1-V2 and MT-V5, which convey motion information along the M-pathway. We also showed that individual motion perception was related to retinal temporal frequency.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Humans
  • Motion
  • Motion Perception*
  • Photic Stimulation
  • Retina
  • Saccades
  • Visual Cortex*
  • Visual Perception