Stabilization of posture by precision contact of the index finger.
Stabilization of posture by precision contact of the index finger.
复制标题
通过食指的精确接触来稳定姿势。
DOI：
--
复制
发表时间：
1994
影响因子：
2.3
通讯作者：
J. Lackner
中科院分区：
文献类型：
--
作者：
Maureen K. Holden;J. Ventura;J. Lackner
如果周围的视线被剥夺，安静站立时的姿势摇摆会增加。我们研究了在没有视觉的情况下，食指与固定杆接触所提供的关于身体位移的感觉运动信息如何用于稳定平衡。在小于1 N的接触力水平下，实现了与视觉贡献相当的稳定性。该值远低于提供身体的显著物理稳定所需的值。我们解释我们的研究结果与触觉阈值的运动检测，“精确的抓地力，”和本体感受和感觉运动信息的配置手臂躯干。在允许指尖处的力水平更高（5-8 N）的条件下，受试者假定被动稳定状态以稳定其站立。
Postural sway during quiet stance increases if sight of the surroundings is denied. We studied how sensory-motor information about body displacement provided by contact of the index finger with a stationary bar can be used to stabilize balance in the absence of vision. Stabilization equivalent to the contribution conferred by vision was achieved at contact force levels less than 1 N. This value is much below that necessary to provide significant physical stabilization of the body. We interpret our findings in relation to tactile thresholds for motion detection, "precision grip," and proprioceptive and sensory-motor information about the configuration of the arm to the torso. In conditions allowing higher force levels at the fingertip (5-8 N), subjects assumed a passively stable state to stabilize their stance.