Spatio-temporal discrimination of frequency in the right and left visual fields: a preliminary report

Normal right-handed subjects were presented with luminance patterns varying from sinusoidally in both space and time to the left and right visual fields. With no temporal variation in the stimuli, detection thresholds for the left visual field were lower than those for the right visual field for all spatial frequencies. However, with increasing temporal variations, a reversal in detection of threshold occurred, with the right visual field surpassing the left. This finding suggests that left and right visual processing may be differentially efficient for temporal and spatial visual information.