Two movement aftereffects: evidence for luminance- and color-movement pathways
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Updated: Oct 25, 2026

Visualizing Visual Adaptation
Published on: April 24, 2017
W R Webster1, R H Day, J F Cassell
1Department of Psychology, Monash University, Clayton, Victoria, Australia.
Abstract:
Two movement aftereffects (MAEs) that bear closely on the issue of visual processing of color and movement have been isolated. Following adaptation with a vertical luminance stimulus a strong MAE occurred with the same stationary test stimulus oriented horizontally and also in a perfectly uniform field. Neither effect occurred following adaptation with a color equiluminance stimulus. These aftereffects have not been reported before. It is concluded that there are at least three pathways for movement, a color, a color-plus-luminance, and a luminance pathway.
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