Prioritized maps of space in human frontoparietal cortex.
Prioritized maps of space in human frontoparietal cortex.
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DOI：
10.1523/jneurosci.3810-12.2012
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发表时间：
2012-11-28
期刊：
影响因子：
--
通讯作者：
Curtis CE
中科院分区：
文献类型：
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作者：
Jerde TA;Merriam EP;Riggall AC;Hedges JH;Curtis CE
Priority maps are theorized to be composed of large populations of neurons organized topographically into a map of gaze-centered space whose activity spatially tags salient and behaviorally relevant information. Here, we identified four priority map candidates along human posterior intraparietal sulcus (IPS0–3) and two along the precentral sulcus (PCS) that contained reliable retinotopically organized maps of contralateral visual space. Persistent activity increased from posterior to anterior IPS areas and from inferior to superior PCS areas during the maintenance of a working memory representation, the maintenance of covert attention, and the maintenance of a saccade plan. Moreover, decoders trained to predict the locations on one task (e.g., working memory) cross-predicted the locations on other tasks (e.g., attention) in superior PCS and IPS2, suggesting that these patterns of maintenance activity may be interchangeable across the tasks. Such properties make these two areas in frontal and parietal cortex viable priority map candidates.
