Effects of lateral masking and spatial precueing on gap-resolution in central and peripheral vision.

The data made available by this experiment add two points to the information obtained by previous studies on eccentric vision and lateral masking. First, they demonstrate a clear effect of target-mask similarity on visual gap-resolution in eccentric vision: increasing target-mask similarity systematically decreases resolution performance. Second, spatial precueing has no effect on gap-resolution performance. One implication of this experiment is that with the present stimulus configurations, visual resolution should decrease much more strongly with eccentricity than it does with classical isolated or bar-masked optotypes.