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PubMed · 9509136

Reversed visual motion and self-sustaining eye oscillations.

L Spillmann·S Anstis·A Kurtenbach·I Howard
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Abstract

A random-dot field undergoing counterphase flicker paradoxically appears to move in the same direction as head and eye movements, i.e. opposite to the optic-flow field. The effect is robust and occurs over a wide range of flicker rates and pixel sizes. The phenomenon can be explained by reversed phi motion caused by apparent pixel movement between successive retinal images. The reversed motion provides a positive feedback control of the display, whereas under normal conditions retinal signals provide a negative feedback. This altered polarity invokes self-sustaining eye movements akin to involuntary optokinetic nystagmus.

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Eye MovementsFeedbackFigural AftereffectHumansOptical IllusionsJournal ArticleResearch Support, Non-U.S. Gov't

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L Spillmann, S Anstis, A Kurtenbach, I Howard. 1997. Reversed visual motion and self-sustaining eye oscillations.. https://doi.org/10.1068/p260823

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