대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)

  • 제31권3호
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  • Pages.210-216
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  • 2010
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  • 1229-0807(pISSN)
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  • 2288-9396(eISSN)
대한의용생체공학회 (The Korean Society of Medical and Biological Engineering)
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기립자세동안 전정기관에 인가된 정현파 전류자극에 대한 자세균형 응답

A Response to Postural Response to Sine Curve Vestibular Electric Stimulation during Standing

  • 이아름 (전북대학교 헬스케어공학과) ;
  • 유미 (전북대학교 의용생체공학과) ;
  • 김진호 (전북대학교 헬스케어공학과) ;
  • 김동욱 (전북대학교 바이오메디컬공학부) ;
  • 김정자 (전북대학교 바이오메디컬공학부)
  • Lee, Ah-Reum (Dept. of Healthcare Engineering, Graduate School, Chonbuk National Univ.) ;
  • Yu, Mi (Dept. of Biomedical Engineering, Graduate School, Chonbuk National Univ.) ;
  • Kim, Jin-Ho (Dept. of Healthcare Engineering, Graduate School, Chonbuk National Univ.) ;
  • Kim, Dong-Wook (Division of Biomedical Engineering, Chonbuk National Univ.) ;
  • Kim, Jung-Ja (Division of Biomedical Engineering, Chonbuk National Univ.)
  • 투고 : 2009.10.28
  • 심사 : 2010.04.12
  • 발행 : 2010.06.30
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초록

This study is vestibular electric stimulation applied between the mastoids during quiet standing elicits postural sway. The aim of this study was to characterize the postural sway response to continuous sinusoidal vestibular electric stimulation across various stimulus frequencies and amplitudes. Binaural bipolar sinusoidal vestibular electric stimulation was applied to the skin overlying the mastoid processes of 10 subjects while they stood on a force plate. The position of the center of pressure(COP) and signals at the feet are obtained on an force plate, while the head and whole body center of mass(COM) was measured with motion analysis system. The stimulus conditions included eight frequencies (1/64, 1/32, 1/16, 1/8, 1/4, 1/2, 1, and 2Hz) and six peak amplitudes (0.1, 0.25, 0.5, 0.7, 1 and 2mA). Each subject experienced one trial at each amplitude-frequency pair. The stimuli elicited sway in lateral plane in all subjects, as evidenced by changes in the stimulus frequency. Our results demonstrate that the vestibular system is sensitive to vestibular electric stimulation intensity changes and responds by altering the magnitude of the response accordingly.

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