Measuring speaker-listener neural coupling with functional near infrared spectroscopy.
Measuring speaker-listener neural coupling with functional near infrared spectroscopy.
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DOI：
10.1038/srep43293
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发表时间：
2017-02-27
影响因子：
4.6
通讯作者：
Ayaz H
中科院分区：
文献类型：
--
作者：
Liu Y;Piazza EA;Simony E;Shewokis PA;Onaral B;Hasson U;Ayaz H
本研究探讨脑-脑耦合，定义为受试者之间的相关性，在自然的口头交流的血流动力学反应。我们使用功能性近红外光谱（fNIRS）来记录3个讲故事的人和15个听故事的人的大脑活动。受试者的大脑活动与说话者的大脑活动有显著的相关性。当语言交流失败时，这种大脑间的关联就消失了。我们进一步比较了fNIRS和功能性磁共振成像（fMRI）记录的听众理解同一个故事，发现fNIRS氧合血红蛋白浓度变化和功能性磁共振成像BOLD在与言语理解相关的大脑区域之间存在显着关系。只有当来自同一故事的数据在两种模式之间进行比较时，fNIRS和fMRI之间的这种相关性才存在，而当来自不同故事的数据进行比较时，fNIRS和fMRI之间的这种相关性就消失了;这种跨模式的一致性进一步突出了时空大脑激活模式作为故事理解的衡量标准的可靠性。我们的研究结果表明，fNIRS可用于调查在自然环境中的口头交流过程中的脑-脑耦合。
The present study investigates brain-to-brain coupling, defined as inter-subject correlations in the hemodynamic response, during natural verbal communication. We used functional near-infrared spectroscopy (fNIRS) to record brain activity of 3 speakers telling stories and 15 listeners comprehending audio recordings of these stories. Listeners’ brain activity was significantly correlated with speakers’ with a delay. This between-brain correlation disappeared when verbal communication failed. We further compared the fNIRS and functional Magnetic Resonance Imaging (fMRI) recordings of listeners comprehending the same story and found a significant relationship between the fNIRS oxygenated-hemoglobin concentration changes and the fMRI BOLD in brain areas associated with speech comprehension. This correlation between fNIRS and fMRI was only present when data from the same story were compared between the two modalities and vanished when data from different stories were compared; this cross-modality consistency further highlights the reliability of the spatiotemporal brain activation pattern as a measure of story comprehension. Our findings suggest that fNIRS can be used for investigating brain-to-brain coupling during verbal communication in natural settings.