SACCADIC SUPPRESSION OF DISPLACEMENT IS STRONGEST IN CENTRAL VISION

被引:13
作者
BRIDGEMAN, B
FISHER, B
机构
关键词
D O I
10.1068/p190103
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
Perception of target displacement is severely degraded if the displacement occurs during a saccadic eye movement, but the variation of this effect across the visual field is unknown. A small target was displaced from a starting point at the midline, or 10 deg to the right or left, while the eye made a saccade from the 10 deg right position to the 10 deg left position. Saccades were detected and the target displaced on line. Assessed with a signal detection measure, suppression was stronger in central vision than in more peripheral locations for all three subjects. Leftward and rightward displacements yielded equal thresholds. The results complement the findings of others to reveal a picture of perceptual events during saccades, with both deeper saccadic suppression and faster correction of spatial values (the correspondences between retinal position and perceived egocentric direction), favouring more accurate spatial processing in central vision than in the periphery.
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页码:103 / 111
页数:9
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