期刊
JOURNAL OF NEUROSCIENCE
卷 27, 期 23, 页码 6219-6223出版社
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.0851-07.2007
关键词
attention; tuning; working memory; frontal cortex; parietal cortex; fMRI
资金
- Medical Research Council [MC_U105580448, MC_U105559847] Funding Source: Medline
- MRC [MC_U105559847, MC_U105580448] Funding Source: UKRI
- Medical Research Council [MC_U105559847, MC_U105580448] Funding Source: researchfish
Current models of working memory and focal attention converge on the idea of an adaptable global system, distributed across a network of frontal and parietal brain regions. Here, we examine how the human frontoparietal network selectively adapts to represent currently relevant information during a simple attentional task: monitoring for a target item in a series of nontargets. Across the entire frontoparietal network, there is selective response to targets, in line with a global system for coding task-relevant inputs. At the same time, there are striking dissociations in response to nontargets; whereas ventrolateral frontal cortex responds just to the target, more dorsal/ anterior regions respond to all stimuli from the target category. The results show different degrees of target selectivity across different regions of the frontoparietal network.
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