Investigating spatial vision and dynamic attentional selection using a gaze-contingent multiresolutional display.

• DOI: 10.1037/1076-898x.8.2.99
• Publication Date: 2005-10-07T19:17:19Z
• Authors: Lester C. Loschky; George W. McConkie
• Keywords: Salience (neuroscience); Visual Search; Peripheral vision; Visual processing; Visual angle

This study examined spatial vision and attentional selection using a gaze-contingent multiresolutional display, with dynamic, gaze-centered, high-resolution window lower resolution periphery. Visual search times eye movements from 15 participants in 3 x design (Window Radius Peripheral Resolution) suggest that contrast sensitivity as function of retinal eccentricity affects visual processing. Smaller windows led to longer shorter saccades; peripheral also shortened saccades (all ps < .05) result avoiding fixating degraded areas. Fixation durations, although for smaller (p .05), were unaffected by whether the next saccade went within or outside window. These results are explained through (a) competition among potential targets where above-threshold filtering reduces an object's relative salience (b) generally disrupted