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Visual evoked potentials to changes in the motion of a patterned field

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Summary

Human averaged visual evoked potentials (VEPs) have been recorded to the onset, reversal and offset of the motion of a visual noise pattern. The VEPs have been analysed into components, distinguishable by their different scalp distributions, and by their distinct dependences on the retinal area stimulated and the pattern velocity. The effects of varying the form and the scale of the pattern have been investigated. The VEPs were almost invariant with respect to changes in the brightness, the direction of motion, and the sharpness of the boundary of the visual field. Under some circumstances the motion-reversal VEP was very similar to the sum of the motion-onset and the motion-offset VEPs.

These VEPs will qualify as a useful tool for investigating the processing of movement information only if they can be shown to be genuine responses to changes in the motion as such. Discussion of this question has been deferred to the following paper.

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Clarke, P.G.H. Visual evoked potentials to changes in the motion of a patterned field. Exp Brain Res 18, 145–155 (1973). https://doi.org/10.1007/BF00234719

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  • DOI: https://doi.org/10.1007/BF00234719

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