GALVANIC VESTIBULAR STIMULATION FOR ANALYSIS OF POSTURAL ADAPTATION AND STABILITY
GALVANIC VESTIBULAR STIMULATION FOR ANALYSIS OF POSTURAL ADAPTATION AND STABILITY
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DOI：
10.1109/10.364515
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发表时间：
1995-03-01
影响因子：
4.6
通讯作者：
FRANSSON, PA
中科院分区：
文献类型：
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作者：
JOHANSSON, R;MAGNUSSON, M;FRANSSON, PA
本文采用分段倒立摆模型，用双极经乳突电刺激前庭神经和迷路诱发人体摆动，在测力台上对12名正常人进行了人体姿势动力学研究。姿势控制的动力学被假定为反映在由脚驱动的稳定力中，所述稳定力是受身体状态反馈影响的复杂肌肉活动的结果摇摆和位置，时间序列分析表明，可以识别具有特定参数的从刺激到摇摆力响应的传递函数，此外，证明存在对前庭刺激的适应，并且我们使用在40-50 s范围内的姿势适应时间常数方面的量化来描述这种现象，结果表明，手段来评估适应性行为和姿势控制的直立人，这可能是有用的个人努力恢复直立的立场康复。
Human postural dynamics was investigated in 12 normal subjects by means of a force platform recording body sway, induced by bipolar transmastoid galvanic stimulation of the vestibular nerve and labyrinth, The model adopted was that of an inverted segmented pendulum, the dynamics of postural control being assumed to be reflected in the stabilizing forces actuated by the feet as a result of complex muscular activity subject to state feedback of body sway and position, Time-series analysis demonstrates that a transfer function from stimulus to sway-force response with specific parameters can be identified, In addition, adaptation to the vestibular stimulus is demonstrated to exist, and we describe this phenomenon using quantification in terms of a postural adaptation time constant in the range of 40-50 s, The results suggest means to evaluate adaptive behavior and postural control in the erect human being which may be useful in the rehabilitation of individuals striving to regain upright stance.