Microsoft Word - SCIS-Yokoo_final

نویسندگان

  • Yuki Yokoo
  • Yasutaka Nakashima
  • Satoshi Miura
  • Yoshikazu Ogaya
  • Takeshi Ando
  • Yo Kobayashi
  • Masakatsu G. Fujie
چکیده

We have been developing a new personal mobility device, Tread-Walk (TW), which is a walking support system for the elderly. This mobility device has a treadmill attached, which can be controlled by detecting the user’s kicking force from the DC motor current. Thanks to this treadmill, TW allows the elderly to drive intuitively. Previously, we evaluated the dynamics and kinematics of our proposed control method. However, these parameters were focused on operation and mechanical performance only. We formulated a hypothesis that the accurate control of the treadmill should be associated with high brain activity. Therefore, in this paper, we tried to evaluate the operability of our proposed control using functional brain imaging. First, we compared brain activity associated with active walking on our treadmill with brain activity associated with forced walking. Next, we verified the effect on brain activity by changing the parameter of active walking control during active walking. We showed that brain activity associated with active walking was much higher than forced walking. In addition, when the parameter of active walking control was changed, brain activity correlated with the control parameter. As a result, we suggest that our active treadmill velocity control may be able to replicate level-ground walking. Keywords-treadmill; rehabilitation; walking; brain imaging; Near-infrared spectroscopy; NIRS.

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تاریخ انتشار 2012