期刊
PSYCHOPHYSIOLOGY
卷 48, 期 10, 页码 1426-1433出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1469-8986.2011.01207.x
关键词
Spatial attention; Top-down control; Event-related potentials; N2pc
资金
- Biotechnology and Biological Sciences Research Council (BBSRC), UK
- BBSRC [BB/E02470X/1] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/E02470X/1] Funding Source: researchfish
We investigated whether the absence of one item in a regularly spaced visual array (gap cue) captures attention in a task-set-independent fashion. Participants searched for a large target among medium-size distractors (size task) or a red target among gray distractors (color task). Target arrays were preceded by uninformative cue arrays that contained a color singleton or a gap cue. The N2pc component was measured as an index of attentional capture. Color singleton cues captured attention only in the color task, but gap cues captured attention in both tasks. For cue arrays containing a color singleton and a gap cue on opposite sides, an N2pc was triggered by the color singleton in the color task. The absence of an item in a regular array triggered task-set-independent attentional capture when it was the only unique display feature, but not when a competing set-matching singleton was simultaneously present.
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