The effect of attentional spread on spatial resolution
The effect of attentional spread on spatial resolution
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DOI：
10.1016/s0042-6989(96)00296-9
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发表时间：
1997-06-01
期刊：
影响因子：
1.8
通讯作者：
Hock, HS
中科院分区：
文献类型：
--
作者：
Balz, GW;Hock, HS
通过让受试者检测一排均匀分布的点的亮度增量，研究了注意力分散的影响。这种增加可能发生在中心的凝视点(狭义注意)，也可能发生在凝视点或其左侧或右侧的四个点中的一个(广泛注意)。窄注意增强了对凝视点亮度增量的检测，也提高了凝视点附近的空间分辨率，用于判断游标的排列和分离。这表明，中心凹小空间滤光片的敏感度更多地是通过狭隘聚焦而不是广泛分散注意力来提高的。在判断两个位于外围的目标之间的分离时，注意力分散对空间分辨率的影响没有被获得，可能是因为它们依赖于偏心(位置)而不是分离。(C)1997年爱思唯尔科学有限公司。
The effects of attentional spread were studied by having subjects detect a luminance increment along a row of evenly spaced dots. The increment could occur for the central, fixated dot (Narrow Attention) or for either the fixation dot or one of the four dots to its left or right (Broad Attention). Narrow Attention enhanced the detection of luminance increments for the fixated dot, and also enhanced spatial resolution near the fixation dot for judgments of vernier alignment and separation. This indicated that the sensitivity of small spatial filters in the fovea was increased more by narrowly focused than broadly spread attention. Effects of attentional spread on spatial resolution were not obtained for judgments of the separation between two peripherally located targets, perhaps because of their dependence on eccentricity (position) rather than separation. (C) 1997 Elsevier Science Ltd.