Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Effect of Lower Limb Ischemia on Linear Motion Perception

하지 허혈 유발에 따른 선형 운동 역치 변화

  • Yi, Yong-Woo (Division of Mechanical Engineering, School of Mechanical, Aerospace and Systems Engineering, KAIST) ;
  • Park, Su-Kyung (Division of Mechanical Engineering, School of Mechanical, Aerospace and Systems Engineering, KAIST)
  • 이용우 (한국과학기술원 기계공학과) ;
  • 박수경 (한국과학기술원 기계공학과)
  • Received : 2011.04.21
  • Accepted : 2011.08.25
  • Published : 2011.11.01
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Abstract

The lower limb somatosensory deficit observed among peripheral neuropathy patients is partially related to the decline in their balance ability. In general, balance ability has been examined by measuring the postural response (i.e., action). However, body motion is induced by integrated multisensory cues (i.e., motion perception). In this study, we hypothesized that the reduced lower limb somatosensation might also lower motion perception. We induced lower limb sensory deficits through ischemia and then measured the cutaneous sensory sensitivity and directional motion perception. The sensory deficit was successfully induced, and it also lowered the motion perception. However, the center of pressure (COP) variation did not significantly change under the sensory deficit. This result implies that measuring motion perception could enable the detection of precursors of sensory deficits.

말초 신경 병변 환자들에게 하지 체성감각의 저하는 균형 능력 저하와 관련이 있다. 일반적으로 균형 능력은 운동 결과를 측정하여 평가하여 왔다. 그러나 인체 움직임은 다양한 감각 신호들이 통합된 운동지각에 의해 유발된다. 따라서, 본 연구에서는 하지 체성감각의 저하는 운동 지각 능력 또한 저하시킬 것이라는 가정하에, 이를 확인하기 위하여 허혈에 의한 하지 체성 감각 저하를 유도하였고, 이때의 피부감각 민감도 및 선형 운동 방향 지각 능력의 변화를 측정 하였다. 이 결과 발바닥 체성감각 저하 유도시에는 운동 지각 역시 저하되었다. 그러나 운동 결과에 해당하는 압력 중심은 변화하지 않았다. 따라서, 운동 지각 측정이 체성 감각 저하를 조기 발견할 수 있는 평가 방법으로 사용될 수 있음을 확인하였다.

Keywords

References

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