Study of activation in motor cortex during mental imagery of walking using fNIRS

Yinlai Jiang, Shuoyu Wang, Renpeng Tan, Kenji Ishida, Takeshi Ando, Masakatsu G. Fujie

    研究成果: Conference contribution

    抄録

    A walking rehabilitation system is proposed which includes both muscle strength enhancement by walking rehabilitation machines and neurological rehabilitation by imaginary walking. In a previous study, we have demonstrated that the concentration of oxygenated hemoglobin (oxy-Hb) in motor area during imaginary walking was higher than that during real walking by means of fNIRS (functional Near-InfraRed Spectroscopy). In order to develop an effective way to activate the motor area in mental imagery, we compared the activation in motor area during real walking (RW), virtual walking (VW), and walking observation (WO). In the VW, subjects were shown moving scenes of a virtual visual environment in which subjects easily imagined as if they were actually walking from the first-person perspective. In the WO, subjects were instructed to imagine that they were walking with the same pace to a person in the video being shown to the subjects (third-person perspective). Four subjects participated in the experiment. As a result, the oxy-Hb in motor area during both VW and WO were higher than that during RW on the average. This was because that it was not necessary to pay attention to the movements of the legs and feet during normal walking, while movement planning was required when the subjects imagined their walking in the same way to another person. There was no significant difference between the oxy-Hb during VW and that during WO. The importance of stimulus diversity in mental imagery of walking was suggested.

    本文言語English
    ホスト出版物のタイトル2011 IEEE/ICME International Conference on Complex Medical Engineering, CME 2011
    ページ637-640
    ページ数4
    DOI
    出版ステータスPublished - 2011
    イベント2011 5th IEEE/ICME International Conference on Complex Medical Engineering, CME 2011 - Harbin
    継続期間: 2011 5 222011 5 25

    Other

    Other2011 5th IEEE/ICME International Conference on Complex Medical Engineering, CME 2011
    CityHarbin
    Period11/5/2211/5/25

    ASJC Scopus subject areas

    • Biomedical Engineering

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