Determination of the gain for a walking speed amplifying belt using brain activity

Satoshi Miura, Yuki Yokoo, Yasutaka Nakashima, Yoshikazu Ogaya, Misato Nihei, Takeshi Ando, Yo Kobayashi, Masakatsu G. Fujie

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)


Movement/walking assistance devices have the great advantage of supporting quality of life for the elderly in an aging society. To strike a balance between efficiency of movement and employment of the elderly user's own body, we developed a smart mobility system called Tread-walk, which is controlled by the user walking on a treadmill and amplifies the user's walking speed. Since the user's walking speed is different from the speed at which the Tread-walk moves, users experience a mismatch between their visual optical flow and somatic sense. In this article, we validate the feasibility of an amplifying gain decision method that analyzes user brain activity. To control Tread-walk, the visual sense is integrated with somatosensation in the parietal area of the brain and controlled in the medial prefrontal cortex. Therefore, first, we measure the parietal area when the participants walk while looking at their virtual optical flow. Second, we measure the medical prefrontal cortex when the participants control Tread-walk 2. These experiments are carried out for a variety of speed amplifying gains. We find that the brain activates significantly at amplification gain K = 1.1-1.7 in the virtual optical flow experiment and K = 1.5-2.0 in the Tread-walk experiment; this brain activation represents the amplification gain at which the visual and somatosensory senses seem to receive similar input. In conclusion, the brain would activate the most significantly at the most appropriate amplification gain.

ジャーナルIEEE Transactions on Human-Machine Systems
出版ステータス出版済み - 4月 2020

!!!All Science Journal Classification (ASJC) codes

  • 人的要因と人間工学
  • 制御およびシステム工学
  • 信号処理
  • 人間とコンピュータの相互作用
  • コンピュータ サイエンスの応用
  • コンピュータ ネットワークおよび通信
  • 人工知能


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