Investigating spatial vision and dynamic attentional selection using a gaze-contingent multiresolutional display
Investigating spatial vision and dynamic attentional selection using a gaze-contingent multiresolutional display
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DOI：
10.1037/1076-898x.8.2.99
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发表时间：
2002-06-01
影响因子：
2.6
通讯作者：
McConkie, GW
中科院分区：
文献类型：
--
作者：
Loschky, LC;McConkie, GW
本研究采用动态、以凝视为中心、高分辨率窗口和低分辨率外围的凝视相关多分辨率显示器，考察了空间视觉和注意选择。视觉搜索时间和眼球运动，从15名参与者在3 × 3的设计（窗口半径X周边分辨率）表明，对比敏感度作为视网膜偏心率的函数影响注意力的选择和视觉处理。较小的窗口导致较长的搜索时间和较短的扫视;较低的周边分辨率也缩短了扫视（所有ps <0.05），这是避免注视退化区域的结果。注视持续时间，尽管对于较小的窗口更长（p <0.05），但不受下一次扫视是在窗口内还是在窗口外的影响。这些结果是通过（a）潜在的眼跳目标之间的竞争，其中阈值以上的过滤降低了对象的相对显着性和（B）一般中断视觉处理。
This study examined spatial vision and attentional selection using a gaze-contingent multiresolutional display, with a dynamic, gaze-centered, high-resolution window and lower resolution periphery. Visual search times and eye movements from 15 participants in a 3 X 3 design (Window Radius X Peripheral Resolution) suggest that contrast sensitivity as a function of retinal eccentricity affects attentional selection and visual processing. Smaller windows led to longer search times and shorter saccades; lower peripheral resolution also shortened saccades (all ps < .05) as a result of avoiding fixating degraded areas. Fixation durations, although longer for smaller windows (p < .05), were unaffected by whether the next saccade went within or outside the window. These results are explained through (a) competition among potential saccade targets where above-threshold filtering reduces an object's relative salience and (b) generally disrupted visual processing.