Motion aftereffect after monocular adaptation to filled-in motion at the blind spot

Vision Res. 1995 Apr;35(8):1041-5. doi: 10.1016/0042-6989(94)00201-v.


Although the blind spot encodes no visual information, one never perceives an odd blob or blank there, but sees a complete scene of the world even when viewing monocularly. This phenomenon called "filling-in" might be related to mechanisms essential to surface perception, but the neural representation has still been unclear. To determine at what stage the computation for filling-in is established in the visual system, whether prolonged observation of a filled-in motion including the blind spot of one eye could cause motion aftereffect at the corresponding visual field of the other eye was examined. The result was positive--interocular transfer of motion aftereffect was obtained at the tested eye. This finding suggests the possibility that real motion and filled-in motion share a common motion pathway in an early stage in the human visual system.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adaptation, Ocular / physiology*
  • Afterimage / physiology*
  • Fixation, Ocular
  • Humans
  • Motion Perception / physiology*
  • Optic Disk / physiology*
  • Time Factors