Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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The Effect of Sensory Stimulation on Postural Tremor at Index Finger of Patients with Essential Tremor (ET)

본태성 진전 환자의 검지에서의 자세성 진전에 대한 감각자극 효과

  • Lee, S.K. (School of Biomedical Engineering, Konkuk Univ.) ;
  • Kim, J.W. (School of Biomedical Engineering, Konkuk Univ.) ;
  • Kwon, Y.R. (School of Biomedical Engineering, Konkuk Univ.) ;
  • Lee, Y.J. (School of Biomedical Engineering, Konkuk Univ.) ;
  • Lee, J.H. (School of Biomedical Engineering, Konkuk Univ.) ;
  • Eom, G.M. (School of Biomedical Engineering, Konkuk Univ.) ;
  • Kwon, D.Y. (Department of Neurology, Korea University Hospital) ;
  • Lee, C.N. (Department of Neurology, Korea University Hospital) ;
  • Seo, Y.M. (Department of Neurology, Korea University Hospital) ;
  • Kim, M.K. (Department of Neurology, Korea University Hospital) ;
  • Park, K.W. (Department of Neurology, Korea University Hospital) ;
  • Jeong, H.C. (Cyber medic) ;
  • Manto, M. (Universite libre de Bruxelles)
  • Received : 2013.05.02
  • Accepted : 2013.09.11
  • Published : 2013.09.30
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Abstract

The essential tremor is an involuntary oscillatory movement of body parts. Conventional treatments of essential tremor have little effects in some patients and also leads to significant side effects. Alternative to these treatments, sensory stimulation may have beneficial effects on the essential tremor. The purpose of this study was to analyze an effect of sensory stimulation on essential tremor. Ten patients with essential tremor ($67.4{\pm}8.82$ yrs, 5 men and 5 women) participated in this study. Three-axis gyro sensors were attached on index finger, hand and forearm of patients. Task of 'arms outstretched forward' was performed with and without sensory stimulation. Vectorsum of three dimensional angular velocities (pitch, roll, yaw) was calculated. Outcome measures included root-meansquare (RMS) mean of the vector-sum amplitude, total power, peak power and peak frequency. RMS amplitude, total power and peak power were reduced by sensory stimulation (p < 0.05). Peak frequency was not affected by sensory stimulation. The results indicate that the sensory stimulation is useful to suppress the essential tremor.

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References

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