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Suppression of motion during saccades

  • David C. Burr (a1)

Saccadic eye movements create (at least) two related but distinct problems for the visual system: they cause rapid image motion and a displacement of the retinal image. Although it is often assumed that the motion is too fast to be resolved, this is certainly not the case for low-spatial-frequency images. Recent experiments have suggested that the reason we are unaware of the motion during saccades is because motion channels are selectively suppressed, possibly by suppression of the magno-cellular (but not the parvocellular) pathway. This suppression may explain why there is no sensation of motion during saccades, but it leaves open the problem of perceiving a stable world despite continual image displacements.

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W. A. Hershberger & J. S. Jordan (1992) Visual direction constancy: Perceiving the visual direction of perisaccadic flashes. In: E. Chekaluk & K. R. Llewellyn (eds.), The role of eye movements in perceptual processes (pp. 143). Elsevier/North Holland.

K. Uchikawa & M. Sato (1995). Saccadic suppression to achromatic and chromatic responses measured by increment-threshold spectral sensitivity. Journal of the Optical Society of America A (in press). [DCB]

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Behavioral and Brain Sciences
  • ISSN: 0140-525X
  • EISSN: 1469-1825
  • URL: /core/journals/behavioral-and-brain-sciences
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