Single trial prestimulus oscillations predict perception of the sound-induced flash illusion
Single trial prestimulus oscillations predict perception of the sound-induced flash illusion
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DOI：
10.1038/s41598-019-42380-x
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发表时间：
2019-04
影响因子：
4.6
通讯作者：
Mathis Kaiser;D. Senkowski;N. Busch;J. Balz;J. Keil
中科院分区：
文献类型：
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作者：
Mathis Kaiser;D. Senkowski;N. Busch;J. Balz;J. Keil
在声音诱发的闪光错觉中，听觉输入以较大的个体间和个体内变异性影响视觉刺激的感知。这种错觉中的跨模态影响已经被证明与视觉和颞叶区域的活动有关。在这项脑电图研究中，我们调查了振荡的大脑活动之前，刺激呈现和随后的知觉的错觉单次试验的水平之间的关系。使用逻辑回归，我们模拟了依赖于振荡功率的感知结果。我们发现，从0.17秒至0.05秒前的刺激发作的枕叶电极25 Hz至41 Hz的活动预测的错觉的看法。对错觉和无错觉试验之间的显著性聚类平均功率值进行t检验，结果表明错觉试验的功率更高，证实了建模结果。我们的结论是，所观察到的功率调制倾向于整合的视听信号，提供进一步的证据，prestimulus脑振荡在多感官知觉的管理作用。
In the sound-induced flash illusion, auditory input affects the perception of visual stimuli with a large inter- and intraindividual variability. Crossmodal influence in this illusion has been shown to be associated with activity in visual and temporal areas. In this electroencephalography study, we investigated the relationship between oscillatory brain activity prior to stimulus presentation and subsequent perception of the illusion on the level of single trials. Using logistic regression, we modeled the perceptual outcome dependent on oscillatory power. We found that 25 Hz to 41 Hz activity over occipital electrodes from 0.17 s to 0.05 s prior to stimulus onset predicted the perception of the illusion. A t-test of power values, averaged over the significant cluster, between illusion and no-illusion trials showed higher power in illusion trials, corroborating the modeling result. We conclude that the observed power modulation predisposes the integration of audiovisual signals, providing further evidence for the governing role of prestimulus brain oscillations in multisensory perception.