Comparing the time course and efficacy of spatial and feature-based attention

被引：132

作者：

Liu, Taosheng ^{[1
]}

Stevens, Sean T. ^{[1
]}

Carrasco, Marisa ^{[1
]}

机构：

[1] NYU, Dept Psychol, New York, NY 10003 USA

来源：

VISION RESEARCH | 2007年 / 47卷 / 01期

关键词：

visual attention; spatial; feature; time course; psychophysics; VISUAL-ATTENTION; SELECTIVE ATTENTION; COLOR; MODULATION; LOCATIONS; SEARCH; MOTION; CORTEX; FIELD;

D O I：

10.1016/j.visres.2006.09.017

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

We investigated the time course of feature-based attention and compared it to the time course of spatial attention in an experiment with identical stimuli and task. Observers detected a speed increment in a compound motion stimulus preceded by cues that indicated either the target location or direction. The cue-target stimulus-onset-asynchrony (SOA) was varied to assess the time course of the attentional effect. We found that spatial attention was deployed earlier than feature-based attention and that both types of attention improved performance to a similar extent at a longer SOA. Results indicate that attention is a flexible mechanism allowing us to efficiently select task-relevant information based on either spatial or feature dimensions, but that spatial attention exert its effects faster. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：108 / 113

页数：6

共 34 条

[1] Selective attention to the color and direction of moving stimuli: Electrophysiological correlates of hierarchical feature selection [J].