Oscillatory brain activity during multisensory attention reflects activation, disinhibition, and cognitive control.

Oscillatory brain activity during multisensory attention reflects activation, disinhibition, and cognitive control.
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DOI:
10.1038/srep32775
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发表时间:
2016-09-08
期刊:
影响因子:
4.6
通讯作者:
Engel AK
Engel AK
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Friese U;Daume J;Göschl F;König P;Wang P;Engel AK

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在这项研究中,我们使用了一种新的多感官注意力范式,调查注意调制皮层振荡在很宽的频率范围内使用magnetencephalography健康人参与者。通过采用一项需要评估视听刺激一致性的任务,我们促进了广泛的皮层网络的形成,包括早期感觉皮层以及与认知控制相关的区域。我们发现,注意力导致早期感觉皮层区域的高频γ-波段活动增加,低频θ-,α-和β-波段活动减少。此外,视觉皮层的α-波段相干性降低。额叶皮层被发现通过增加低频相位同步来控制注意力。跨模态一致性调制扣带回中部和上级颞叶皮层的β-波段相干性。总之,这些结果提供了一个综合的观点,在多感官注意的同时在不同频率的振荡。
In this study, we used a novel multisensory attention paradigm to investigate attention-modulated cortical oscillations over a wide range of frequencies using magnetencephalography in healthy human participants. By employing a task that required the evaluation of the congruence of audio-visual stimuli, we promoted the formation of widespread cortical networks including early sensory cortices as well as regions associated with cognitive control. We found that attention led to increased high-frequency gamma-band activity and decreased lower frequency theta-, alpha-, and beta-band activity in early sensory cortex areas. Moreover, alpha-band coherence decreased in visual cortex. Frontal cortex was found to exert attentional control through increased low-frequency phase synchronisation. Crossmodal congruence modulated beta-band coherence in mid-cingulate and superior temporal cortex. Together, these results offer an integrative view on the concurrence of oscillations at different frequencies during multisensory attention.
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