Representation of wrist joint kinematics by the ensemble of muscle spindles from synergistic muscles.
Representation of wrist joint kinematics by the ensemble of muscle spindles from synergistic muscles.
复制标题
通过协同肌肉的肌梭集合来表示腕关节运动学。
DOI：
10.1152/jn.1998.79.5.2265
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
Swinnen,SP
中科院分区：
文献类型：
--
作者：
Verschueren,SM;Cordo,PJ;Swinnen,SP
P.，Paul J.Cordo，and Stephan P.Swinnen.腕关节运动学的协同肌梭集合.神经生理学杂志，79：2265-2276,1998.关于运动的本体感觉信息通过各种类型的感受器传递到中枢神经系统，这些感受器广泛分布于肌肉、关节和皮肤。肌梭被认为是感知运动运动学的重要和可靠的信息来源。先前关于单个肌梭放电模式特征的研究给人留下的印象是，每个感受器的放电与许多运动学变量有关，留下了以下问题的答案：同一肌肉中或协同肌肉中的肌梭集合起到了什么作用？这项研究描述了关节位置和速度的感知是否基于位于穿过关节的所有协同肌肉中的肌梭的净输入。正常人完成一项运动协调任务，需要感知关节速度和手腕上的动态位置。任务是当右腕在屈曲方向上通过指定的目标角度被动旋转时，轻快地打开左手。在随机发生的试验中，在执行运动任务的过程中，分别或以不同的组合振动三块肌肉的肌腱[桡侧腕伸肌(ECR)、尺侧腕伸肌(ECU)和指伸肌腱(ED)]。众所周知，肌腱振动会扭曲肌梭的放电模式，从而影响运动感觉。通过比较有无肌腱振动时的性能误差，量化了驻留在ECR、ECU和ED中的肌梭的相对影响。单独的ECR、ECU或ED肌腱的振动会在表现上产生系统性的未及误差，这与对腕部速度和动态位置的误解一致。当组合的肌腱而不是单独的肌腱振动时，表现误差更大。ECR和ECU同时振动产生的误差大致等于单个肌腱振动产生的误差之和。腕部协同肌腱振动的这些效应表明，运动感觉来自于所有协同肌肉的肌梭的整合输入。
Verschueren, Sabine M. P., Paul J. Cordo, and Stephan P. Swinnen.Representation of wrist joint kinematics by the ensemble of muscle spindles from synergistic muscles.J. Neurophysiol.79: 2265–2276, 1998. Proprioceptive information about movement is transmitted to the central nervous system by a variety of receptor types, which are widely distributed among the muscles, joints, and skin. Muscle spindles are known to be an important and reliable source of information for the perception of movement kinematics. Previous studies that focused on the characteristics of single muscle spindle firing patterns have left the impression that each receptor fires in relation to a number of kinematic variables, leaving the following question unanswered: what role is played by the ensemble of muscle spindles within the same muscle or within synergistic muscles? The study described in this paper addressed whether the perception of joint position and velocity is based on the net input of muscle spindles residing in all synergistic muscles crossing a joint. Normal human adults performed a motor coordination task that required perception of joint velocity and dynamic position at the wrist. The task was to open the left hand briskly as the right wrist was passively rotated in the flexion direction through a prescribed target angle. In randomly occurring trials, the tendons to three muscles [extensor carpi radialis (ECR), extensor carpi ulnaris (ECU), and extensor digitorum (ED)] were vibrated either individually or in different combinations during the performance of the motor task. Tendon vibration is known to distort muscle spindle firing patterns, and consequently, kinesthesia. By comparing performance errors with and without tendon vibration, the relative influences of muscle spindles residing in ECR, ECU, and ED were quantified. Vibration of the individual ECR, ECU, or ED tendons produced systematic undershoot errors in performance, consistent with the misperception of wrist velocity and dynamic position. Performance errors were larger when combinations of, rather than individual, muscle tendons were vibrated. The error resulting from simultaneous vibration of ECR and ECU was roughly equal to the sum of the errors produced by vibration of the individual tendons. These effects of vibrating synergistic tendons at the wrist suggest that kinesthesia is derived from the integrated input of muscle spindles from all synergistic muscles.
登录
查看更多内容
影响因子：
5.5
作者：
HALL, LA;MCCLOSKEY, DI
通讯作者：
MCCLOSKEY, DI
影响因子：
5.5
作者：
REFSHAUGE, KM;CHAN, R;MCCLOSKEY, DI
通讯作者：
MCCLOSKEY, DI
伽玛系统对Ia肌梭互相关活动的影响及其与信息传递的关系
影响因子：
2.5
作者：
G. Inbar;J. Madrid;P. Rudomín
通讯作者：
P. Rudomín
在准确的位置保持过程中，人类手指肌肉的纺锤体传入单位缺乏位置响应。
DOI：
--
发表时间：
1982
期刊：
Journal of Physiology
影响因子：
--
作者：
M. Hulliger;E. Nordh;Å. Vallbo
通讯作者：
Å. Vallbo
由于肌梭发射阈值的通道间色散而导致的神经肌肉信息传输中的失真抑制
影响因子：
4.6
作者：
P. Milgram;G. Inbar
通讯作者：
G. Inbar