人工舌置触觉生物反馈改善人体踝关节位置觉
Improving human ankle joint position sense using an artificial tongue-placed tactile biofeedback
摘要：
本体感觉由来自几个来源的感觉输入组成，包括肌梭、关节囊、韧带和皮肤。本实验的目的是研究中枢神经系统是否能够整合通过舌头的电触觉刺激传递的人工生物反馈，以提高踝关节的本体感觉敏锐度。为了实现这一目标，9名年轻健康的成年人被要求在有和没有生物反馈的情况下执行主动踝关节匹配任务。生物反馈的基本原理包括通过舌头放置的触觉输出设备（舌头显示单元）向受试者提供关于其匹配踝位置相对于其参考踝位置的位置的补充信息。分别使用绝对误差和可变误差确定定位的总体准确度和可变性的测量。结果表明，更准确，更一致的匹配性能比没有生物反馈，减少绝对误差和变量误差，分别表示。这些发现表明，中枢神经系统能够利用人工舌头放置的触觉生物反馈来改善踝关节的位置感。
英文摘要：
Proprioception is comprised of sensory input from several sources including muscle spindles, joint capsule, ligaments and skin. The purpose of the present experiment was to investigate whether the central nervous system was able to integrate an artificial biofeedback delivered through electrotactile stimulation of the tongue to improve proprioceptive acuity at the ankle joint. To address this objective, nine young healthy adults were asked to perform an active ankle-matching task with and without biofeedback. The underlying principle of the biofeedback consisted of supplying subjects with supplementary information about the position of their matching ankle position relative to their reference ankle position through a tongue-placed tactile output device (Tongue Display Unit). Measures of the overall accuracy and the variability of the positioning were determined using the absolute error and the variable error, respectively. Results showed more accurate and more consistent matching performances with than without biofeedback, as indicated by decreased absolute and variables errors, respectively. These findings suggested that the central nervous system was able to take advantage of an artificial tongue-placed tactile biofeedback to improve the position sense at the ankle joint.
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