Abstract

We compared the effect of visual information on the dominant upper limb position sense of children with diplegic cerebral palsy (n = 10) and normally developing children (n = 10). An isokinetic dynamometer passively moved the dominant forearm in 120° of elbow flexion/extension until the volunteers stopped the machine to indicate that the elbow joint was positioned in the predetermined target angle. Participants performed this task five times in sequence with and without visual feedback of the elbow angle. We calculated the absolute and the relative position errors related to the final elbow position and the target angle. In both groups, absolute error was significantly higher when vision was occluded. Relative error was not affected by cerebral palsy or visual feedback. When vision was occluded, accuracy on this task was similarly impaired in both groups and precision was not disturbed.

摘要

我们比较了视觉信息对二肢性脑瘫患儿（n  = 10）和正常发育的患儿（n = 10）。等速测力计被动地移动优势前臂至肘部屈伸120度，直到志愿者停止机器以表明肘关节处于预定目标角度。参与者在有和没有弯头角度的视觉反馈的情况下依次执行了此任务五次。我们计算了与最终肘部位置和目标角度有关的绝对和相对位置误差。在两组中，闭塞视力时的绝对误差均明显更高。相对误差不受脑瘫或视觉反馈的影响。当视觉被遮挡时，两组的这项工作的准确性都会受到类似的损害，而准确性也不会受到影响。