使用多模态刺激，在句子处理过程中全脑区域之间的特定频率定向相互作用。
Frequency-specific directed interactions between whole-brain regions during sentence processing using multimodal stimulus.
机构信息
The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for NeuroInformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in BioMedicine, University of Electronic Science and Technology of China, Chengdu 611731, China.
The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for NeuroInformation, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Life Science and Technology, Center for Information in BioMedicine, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Foreign Languages, University of Electronic Science and Technology of China, Sichuan, Chengdu 611731, China.
出版信息
Neurosci Lett. 2023 Aug 24;812:137409. doi: 10.1016/j.neulet.2023.137409. Epub 2023 Jul 23.
Neural oscillations subserve a broad range of speech processing and language comprehension functions. Using an electroencephalogram (EEG), we investigated the frequency-specific directed interactions between whole-brain regions while the participants processed Chinese sentences using different modality stimuli (i.e., auditory, visual, and audio-visual). The results indicate that low-frequency responses correspond to the process of information flow aggregation in primary sensory cortices in different modalities. Information flow dominated by high-frequency responses exhibited characteristics of bottom-up flow from left posterior temporal to left frontal regions. The network pattern of top-down information flowing out of the left frontal lobe was presented by the joint dominance of low- and high-frequency rhythms. Overall, our results suggest that the brain may be modality-independent when processing higher-order language information.
神经振荡在广泛的言语处理和语言理解功能中发挥作用。使用脑电图（EEG），我们研究了参与者使用不同模态刺激（即听觉、视觉和视听）处理中文句子时全脑区域之间的特定频率的定向相互作用。结果表明，低频响应对应于不同模态的初级感觉皮层中信息流聚合的过程。由高频响应主导的信息流表现出从左后颞叶到左额叶区域的自下而上的流动特征。来自左额叶的自上而下信息流的网络模式表现为低频和高频节律的共同主导。总的来说，我们的结果表明，大脑在处理更高阶的语言信息时可能是模态独立的。
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