Attentional Modulation of Visual Processes in Motion Perception

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The present research examined the effects of spatially directed attention on the temporal characteristics of information transmission in the visual system. A two-stimulus, two-flash, long-range motion display was used. The results showed that attending to 1 of the 2 stimuli altered the perceived direction of motion, the pattern of motion and no-motion responses, and ratings of motion quality. The results were compared with predictions derived from 2 conceptual frameworks of attention: a temporal-profile model and an additive account. The results supported the temporal-profile model.

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