Using eye saccades to assess the selectivity of search movements

被引:150
作者
Zelinsky, GJ [1 ]
机构
[1] BROWN UNIV, DEPT COGNIT & LINGUIST SCI, PROVIDENCE, RI 02912 USA
关键词
eye movements; oculomotor; guided search; attention;
D O I
10.1016/0042-6989(95)00300-2
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The degree of selectivity or guidance underlying search was tested by having subjects search for a target (a red vertical or green horizontal bar) among Similar (red horizontal and green vertical bars) and Dissimilar distracters (blue and yellow diagonal bars). If search is indeed a guided process, then the Dissimilar items should not be given the same scrutiny as elements sharing a feature with the target. The frequency of eye movements directed to the two distracter types was used as an indicator of this scrutiny. The analysis revealed almost equal percentages of saccades to Similar and Dissimilar elements (55% and 45%, respectively). Although indicating some evidence for selectivity during oculomotor search, this finding suggests that simpler and less optimal strategies may undermine the more efficient guided search algorithm. Copyright (C) 1996 Elsevier Science Ltd.
引用
收藏
页码:2177 / 2187
页数:11
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