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题名: EEG alpha and gamma modulators mediate motion sickness-related spectral responses
作者: SW Chuang
CH Chuang
YS Yu
JT King
CT Lin
贡献者: 國立臺灣海洋大學:資訊工程學系
关键词: EEG
alpha
co-modulation
gamma
motion sickness
sensory conflict theory
日期: 2016-01
上传时间: 2018-11-14T08:52:21Z
出版者: International Journal of Neural Systems
摘要: Abstract: Motion sickness (MS) is a common experience of travelers. To provide insights into brain dynamics associated with MS, this study recruited 19 subjects to participate in an electroencephalogram (EEG) experiment in a virtual-reality driving environment. When riding on consecutive winding roads, subjects experienced postural instability and sensory conflict between visual and vestibular stimuli. Meanwhile, subjects rated their level of MS on a six-point scale. Independent component analysis (ICA) was used to separate the filtered EEG signals into maximally temporally independent components (ICs). Then, reduced logarithmic spectra of ICs of interest, using principal component analysis, were decomposed by ICA again to find spectrally fixed and temporally independent modulators (IMs). Results demonstrated that a higher degree of MS accompanied increased activation of alpha (r = 0.421) and gamma (r =0.478) IMs across remote-independent brain processes, covering motor, parietal and occipital areas. This co-modulatory spectral change in alpha and gamma bands revealed the neurophysiological demand to regulate conflicts among multi-modal sensory systems during MS.
關聯: 26(2)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51157
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