Authors
Árni Kristjánsson, Patrik Vuilleumier, Sophie Schwartz, Emiliano Macaluso, Jon Driver
Publication date
2007/7/1
Journal
Cerebral cortex
Volume
17
Issue
7
Pages
1612-1624
Publisher
Oxford University Press
Description
Maljkovic and Nakayama first showed that visual search efficiency can be influenced by priming effects. Even “pop-out” targets (defined by unique color) are judged quicker if they appear at the same location and/or in the same color as on the preceding trial, in an unpredictable sequence. Here, we studied the potential neural correlates of such priming in human visual search using functional magnetic resonance imaging (fMRI). We found that repeating either the location or the color of a singleton target led to repetition suppression of blood oxygen level–dependent (BOLD) activity in brain regions traditionally linked with attentional control, including bilateral intraparietal sulci. This indicates that the attention system of the human brain can be “primed,” in apparent analogy to repetition-suppression effects on activity in other neural systems. For repetition of target color but not location, we also found repetition …
Total citations
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