Abstract

Contrast sensitivity was measured for sinusoidal gratings in different retinal orientations. Oblique gratings of high spatial-frequency are less resolvable than vertical ones. This confirms earlier results and is attributed to properties of orientation-sensitive cortical neurons. The advantage of retinally vertical over oblique gratings persists when the head is tilted and does not change during the next half hour. It is concluded that the properties of orientation-sensitive neurons are not significantly altered in the short term.

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