Decoding covert spatial attention using electrocorticographic (ECoG) signals in humans.

Decoding covert spatial attention using electrocorticographic (ECoG) signals in humans.
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使用人类电视图(ECOG)信号来解码秘密空间注意力。

DOI:
10.1016/j.neuroimage.2012.02.017
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发表时间:
2012-05-01
期刊:
影响因子:
5.7
通讯作者:
Schalk, Gerwin
Schalk, Gerwin
中科院分区:
医学1区
文献类型:
--
作者:
Gunduz, Aysegul;Brunner, Peter;Daitch, Amy;Leuthardt, Eric C.;Ritaccio, Anthony L.;Pesaran, Bijan;Schalk, Gerwin

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这项研究表明,从大脑表面记录的皮层电图(ECoG)信号提供了有关人类视觉注意转移及其方向定向的详细信息。ECoG允许识别皮层区域和时间段,这些区域和时间段保存了关于内隐注意转移的最多信息。我们的研究结果表明,一个短暂的分布式额顶叶机制的注意力定向是由不同的生理过程。这种神经机制不仅编码受试者是否将注意力转移到一个位置,而且还编码注意力的轨迹。这项工作有助于我们了解人类注意力的电生理表征。它还可能最终导致脑机接口(BCI),优化用户与周围环境的交互,或者允许人们通过转移注意力来传达选择。
This study shows that electrocorticographic (ECoG) signals recorded from the surface of the brain provide detailed information about shifting of visual attention and its directional orientation in humans. ECoG allows for the identification of the cortical areas and time periods that hold the most information about covert attentional shifts. Our results suggest a transient distributed fronto-parietal mechanism for orienting of attention that is represented by different physiological processes. This neural mechanism encodes not only whether or not a subject shifts their attention to a location, but also the locus of attention. This work contributes to our understanding of the electrophysiological representation of attention in humans. It may also eventually lead to brain-computer interfaces (BCIs) that optimize user interaction with their surroundings or that allow people to communicate choices simply by shifting attention to them.
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