The relationship between the laterality of chopstick manipulation and vision-recognition feed-back system in humans : Electromyograph analyses

本研究旨在阐明正常人筷子操作的偏侧性与视觉识别反馈系统的关系。在无视觉和视觉截止条件下，考察了训练对优势手、非优势手筷子传递棍样时间的影响。本研究对训练前后拇短屈肌、指浅屈肌、尺侧腕屈肌和腕屈肌在屈手、伸手和用筷子抓取棍样时的肌电活动进行了分析。从这些结果来看，筷子操作训练改善了神经-肌肉的协调性。

The purpose of the present study is to elucidate the relationship between the laterality of chopstick manipulation and vision-recognition feed-back system in healthy human subjects. The effects of training on the transfer time of the stick sample by chopsticks in the dominant hand non-dominant hand were examined in the vision-free and vision cutoff conditions. In the present study, electromyograms of flexor pollicis brevis, flexor digitorum superficialis, brachio radialis and flexor carpi radialis muscles discharged during hand flexion, hand extension and pickup of stick sample with chopsticks were analyzed before and after training. From these results, training of chopstick manipulation improved nerve-muscle coordination.