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Suppression of motion during saccades

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Commentary on BruceBridgeman, A. H. C.Van der Heijden, and Boris M.Velichkovsky (1994) A theory of visual stability across saccadic eye movements. BBS 17:247–292

Published online by Cambridge University Press:  19 May 2011

David C. Burr
Affiliation:
Istituto di Neurofisiologia del CNR, Pisa, Italy, dave@neuro.in.pi.cnr.it

Abstract

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.

Information

Type
Coninuing Commentary
Copyright
Copyright © Cambridge University Press 1996

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