Abstract

A vertical, sinusoidal adapting grating of 0.4 cycle/degree that moved laterally at 3 Hz produced a considerably greater threshold rise for a subsequently viewed test grating that moved in the same direction as the adapting grating than in the opposite direction. The test grating moved at 0.25 or 0.12 Hz. The result shows that very slowly moving test patterns that move in the direction opposite to the adapting pattern are detected in part by direction-selective mechanisms.

© 1979 Optical Society of America

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