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Functional connectivity analysis of electroencephalography during motor imagery using a head-mounted display Yuya Sakaguchi 1,2 , Ayumi Muramatsu 3 , Yusuke Yamamoto 3,4 , Ken Okutani 1 , Shogo Hiragami 1 , Yuko Mizuno-Matsumoto 3,5 1Department of Occupational Therapy, School of Rehabilitation, Hyogo Medical University 2Doctoral Course, Graduate School of Applied Informatics, University of Hyogo 3Graduate School of Information Science, University of Hyogo 4Department of Medical Engineering, Faculty of Health Sciences, Aino University 5D3 Center, The University of Osaka Keyword: 運動イメージ , 運動観察 , バーチャルリアリティ , 脳波 , 脳機能 , Motor imagery , Action observation , Virtual reality , Electroencephalography , Brain function pp.504-512
Published Date 2025/10/15
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 A head-mounted display (HMD) provides users with a high immersion and presence. This study aimed to compare the effects of an HMD and a conventional two-dimensional display used for motor imagery on mental status, electroencephalography (EEG) power spectrum, and functional connectivity. The participants were 12 healthy individuals engaging in motor imagery immediately after video observation through either an HMD or a tablet display (TD). The motor imagery tasks included finger flexion and block transportation. EEG during motor imagery was recorded with 19 electrodes according to the international 10/20 system. Power spectral and coherence values in the alpha (8-14 Hz) and beta (15-30 Hz) frequency bands were calculated. The results showed that the vividness of motor imagery was significantly higher in the HMD condition than in the TD condition. Moreover, the power spectral values in the alpha and beta frequency bands significantly increased across multiple brain regions. The coherence values were significantly increased in the alpha and beta frequency bands between the frontal-parietal region, corresponding to the frontoparietal network, and between the frontal-occipital region, which is involved in visual information processing. These findings suggest that the HMD may support motor imagery more effectively than TD.


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電子版ISSN 印刷版ISSN 0289-4920 日本作業療法士協会

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