Topographic specificity of alpha power during auditory spatial attention.
Topographic specificity of alpha power during auditory spatial attention.
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DOI：
10.1016/j.neuroimage.2019.116360
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发表时间：
2020-02-15
期刊：
影响因子：
5.7
通讯作者：
Shinn-Cunningham, Barbara
中科院分区：
文献类型：
--
作者：
Deng, Yuqi;Choi, Inyong;Shinn-Cunningham, Barbara
视觉和躯体感觉空间注意都诱导顶叶α（8-14 Hz）振荡，其地形分布取决于空间注意焦点的方向。在听觉领域，顶叶α功率的对比，为视觉和视觉空间注意揭示定性相似的偏侧化，然而，目前尚不清楚是否α偏侧化单调变化的听觉注意的方向，因为它不为视觉空间注意。此外，大多数先前的α振荡研究没有考虑α频率的个体差异，而是简单地分析了固定光谱带中的功率。在这里，我们记录了人类受试者的脑电图，当他们把注意力集中在五个方位角位置之一时。在一个指示即将到来的目标音节序列的方向的提示之后（在目标开始之前），阿尔法功率以特定于任务的方式改变。中央电极和顶枕电极之间的个体峰值α频率始终不同，这表明任务相关α的多个神经发生器。与对侧半球相比，顶叶枕叶α在注意力集中的同侧半球上增加，并且随着注意力的方向从最左边转移到最右边而系统地改变。这些结果表明，顶叶α偏侧化的变化顺利与听觉注意的方向，在视觉空间注意提供了进一步的支持，越来越多的证据表明，额顶注意网络是超模态。
Visual and somatosensory spatial attention both induce parietal alpha (8–14 Hz) oscillations whose topographical distribution depends on the direction of spatial attentional focus. In the auditory domain, contrasts of parietal alpha power for leftward and rightward attention reveal qualitatively similar lateralization; however, it is not clear whether alpha lateralization changes monotonically with the direction of auditory attention as it does for visual spatial attention. In addition, most previous studies of alpha oscillation did not consider individual differences in alpha frequency, but simply analyzed power in a fixed spectral band. Here, we recorded electroencephalography in human subjects when they directed attention to one of five azimuthal locations. After a cue indicating the direction of an upcoming target sequence of spoken syllables (yet before the target began), alpha power changed in a task-specific manner. Individual peak alpha frequencies differed consistently between central electrodes and parieto-occipital electrodes, suggesting multiple neural generators of task-related alpha. Parieto-occipital alpha increased over the hemisphere ipsilateral to attentional focus compared to the contralateral hemisphere, and changed systematically as the direction of attention shifted from far left to far right. These results showing that parietal alpha lateralization changes smoothly with the direction of auditory attention as in visual spatial attention provide further support to the growing evidence that the frontoparietal attention network is supramodal.
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影响因子：
3.5
作者：
Conway, ARA;Cowan, N;Bunting, MF
通讯作者：
Bunting, MF
影响因子：
5.3
作者：
Haegens, Saskia;Haendel, Barbara F.;Jensen, Ole
通讯作者：
Jensen, Ole
α 峰值频率的个体间和个体内变异性。
影响因子：
5.7
作者：
Haegens S;Cousijn H;Wallis G;Harrison PJ;Nobre AC
通讯作者：
Nobre AC
DOI：
10.1111/j.2517-6161.1995.tb02031.x
发表时间：
1995-01-01
影响因子：
5.8
作者：
BENJAMINI, Y;HOCHBERG, Y
通讯作者：
HOCHBERG, Y
影响因子：
56.9
作者：
Buschman, Timothy J.;Miller, Earl K.
通讯作者：
Miller, Earl K.