Effects of arm stiffness and muscle effort on position reproduction error in the horizontal plane

Yoshihiro Itaguchi, Kazuyoshi Fukuzawa

研究成果: Article査読

11 被引用数 (Scopus)

抄録

The present study investigated the effects of two-dimensional arm stiffness and muscle effort required to maintain horizontal arm posture on positionreproduction errors. 12 participants performed a multi-joint position-reproduction task without visual feedback. They were required to indicate a proprioceptively remembered target position with the fingertip of the ipsilateral arm. The results showed that both constant and variable errors were larger in the direction of lower stiffness rather than in the direction of higher stiffness in the stiffness ellipse. In the condition where participants' arm was supported during position perception, variable error was larger than when it was vertically unsupported. These results suggested that proprioceptive accuracy and precision are positively related to the axis length of elliptically represented arm stiffness, and that exerting muscle effort to maintain the arm against the force of gravity may be supportive of human proprioceptive mechanisms.

本文言語English
ページ(範囲)757-773
ページ数17
ジャーナルPerceptual and Motor Skills
114
3
DOI
出版ステータスPublished - 2012 6
外部発表はい

ASJC Scopus subject areas

  • 実験心理学および認知心理学
  • 感覚系

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