Beyond alpha band: prestimulus local oscillation and interregional synchrony of the beta band shape the temporal perception of the audiovisual beep-flash stimulus.

IF 3.7 3区 医学 Q2 ENGINEERING, BIOMEDICAL Journal of neural engineering Pub Date : 2024-06-13 DOI:10.1088/1741-2552/ace551
Zeliang Jiang, Xingwei An, Shuang Liu, Erwei Yin, Ye Yan, Dong Ming
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Abstract

Objective.Multisensory integration is more likely to occur if the multimodal inputs are within a narrow temporal window called temporal binding window (TBW). Prestimulus local neural oscillations and interregional synchrony within sensory areas can modulate cross-modal integration. Previous work has examined the role of ongoing neural oscillations in audiovisual temporal integration, but there is no unified conclusion. This study aimed to explore whether local ongoing neural oscillations and interregional audiovisual synchrony modulate audiovisual temporal integration.Approach.The human participants performed a simultaneity judgment (SJ) task with the beep-flash stimuli while recording electroencephalography. We focused on two stimulus onset asynchrony (SOA) conditions where subjects report ∼50% proportion of synchronous responses in auditory- and visual-leading SOA (A50V and V50A).Main results.We found that the alpha band power is larger in synchronous response in the central-right posterior and posterior sensors in A50V and V50A conditions, respectively. The results suggested that the alpha band power reflects neuronal excitability in the auditory or visual cortex, which can modulate audiovisual temporal perception depending on the leading sense. Additionally, the SJs were modulated by the opposite phases of alpha (5-10 Hz) and low beta (14-20 Hz) bands in the A50V condition while the low beta band (14-18 Hz) in the V50A condition. One cycle of alpha or two cycles of beta oscillations matched an auditory-leading TBW of ∼86 ms, while two cycles of beta oscillations matched a visual-leading TBW of ∼105 ms. This result indicated the opposite phases in the alpha and beta bands reflect opposite cortical excitability, which modulated the audiovisual SJs. Finally, we found stronger high beta (21-28 Hz) audiovisual phase synchronization for synchronous response in the A50V condition. The phase synchrony of the beta band might be related to maintaining information flow between visual and auditory regions in a top-down manner.Significance.These results clarified whether and how the prestimulus brain state, including local neural oscillations and functional connectivity between brain regions, affects audiovisual temporal integration.

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超越α波段:β波段的刺激前局部振荡和区域间同步性决定了对视听哔哔声-闪光刺激的时间感知。
目的:如果多模态输入在一个狭窄的时间窗口(称为时间结合窗口(TBW))内,多模态整合就更有可能发生。刺激前的局部神经振荡和感觉区域内的区域间同步可以调节跨模态整合。之前的研究已经探讨了持续神经振荡在视听时间整合中的作用,但目前还没有统一的结论。本研究旨在探讨局部持续神经振荡和区域间视听同步是否会调节视听时空整合。主要结果.我们发现,在 A50V 和 V50A 条件下,同步反应中右后方中央和后方传感器的阿尔法波段功率分别较大。结果表明,α波段功率反映了听觉或视觉皮层中神经元的兴奋性,它可根据主导感官调节视听时间感知。此外,在 A50V 条件下,SJ 受α(5-10 Hz)和低β(14-20 Hz)波段相反相位的调制,而在 V50A 条件下,SJ 受低β波段(14-18 Hz)的调制。一个周期的α振荡或两个周期的β振荡与听觉领先的TBW(86毫秒)相匹配,而两个周期的β振荡与视觉领先的TBW(105毫秒)相匹配。这一结果表明,α和β波段的相反相位反映了大脑皮层相反的兴奋性,从而调节了视听 SJ。最后,我们发现在 A50V 条件下,同步反应的高贝塔(21-28 Hz)视听相位同步性更强。这些结果阐明了包括局部神经振荡和脑区之间功能连接在内的预刺激大脑状态是否以及如何影响视听时间整合。
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来源期刊
Journal of neural engineering
Journal of neural engineering 工程技术-工程:生物医学
CiteScore
7.80
自引率
12.50%
发文量
319
审稿时长
4.2 months
期刊介绍: The goal of Journal of Neural Engineering (JNE) is to act as a forum for the interdisciplinary field of neural engineering where neuroscientists, neurobiologists and engineers can publish their work in one periodical that bridges the gap between neuroscience and engineering. The journal publishes articles in the field of neural engineering at the molecular, cellular and systems levels. The scope of the journal encompasses experimental, computational, theoretical, clinical and applied aspects of: Innovative neurotechnology; Brain-machine (computer) interface; Neural interfacing; Bioelectronic medicines; Neuromodulation; Neural prostheses; Neural control; Neuro-rehabilitation; Neurorobotics; Optical neural engineering; Neural circuits: artificial & biological; Neuromorphic engineering; Neural tissue regeneration; Neural signal processing; Theoretical and computational neuroscience; Systems neuroscience; Translational neuroscience; Neuroimaging.
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