The structure of somatosensory information for human postural control.
The structure of somatosensory information for human postural control.
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人体姿势控制的体感信息结构。
DOI：
10.1123/mcj.2.1.13
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
Lackner,JR
中科院分区：
文献类型：
--
作者：
Jeka,JJ;Ribeiro,P;Oie,K;Lackner,JR
本研究的目的是确定体感刺激的特性，该刺激改变其与身体摇摆的时间耦合。对六名站立的受试者进行测试，同时触摸位于受试者正前方或侧面的金属板。在每种情况下，板以 0.2 Hz 的频率沿内侧-外侧 (ML) 或前后方向 (AP) 移动 4 毫米。结果表明，当触摸板沿手臂纵轴方向移动时，身体摇摆和触摸板运动之间的耦合最强。当触摸板垂直于臂的纵轴移动时，耦合强度较弱。结果一致表明，指尖处的径向扩张刺激比层状刺激更有效。此外，来自表面的体感信息根据接触肢体的方向和通过其运动可获得的潜在自由度来解释。
The goal of the present study was to determine the properties of the somatosensory stimulus that alter its temporal coupling to body sway. Six standing subjects were tested while touching a metal plate positioned either directly in front of or lateral to the subject. In each condition, the plate moved 4 mm at 0.2 Hz in either the medial-lateral (ML) or anterior-posterior direction (AP). The results showed that coupling between body sway and touch plate movement was strongest when the touch plate moved in a direction along the longitudinal axis of the arm. Coupling strength was weaker when the touch plate moved perpendicular to the longitudinal axis of the arm. The results consistently show that a radial expansion stimulus was more effective than a lamellar-type stimulus at the fingertip. Moreover, somatosensory information from a surface is interpreted in terms of the orientation of the contact limb and the potential degrees of freedom available through its movement.