Studies of Skill Movement of Index Finger During Pursuit Tracking Task

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In five normal men, we studied on skill movement of index finger with pursuit tracking task.Single sinusoidal waves on the oscilloscope were used for stimulus.During pursuit tracking task, movements of index finger were recorded by electrogoniometer, and simultaneously e. m. g. of the ext. digitorum communis (E. D. C.) and the ext. indicis proprius (E. I. P.), were picked up using 70μ wire electrodes and were integrated.Movement of index finger and integrated e. m. g. waves were transmitted to degital datas and analized by frequency response. From these studies, the following conclusions were obtained.1) Index finger can not pursue sinusoidal waves consisted of the frequency of more than 4Hz.2) Integrated waves of the E. I. P. are linealy related to movement of the index finger.3) But, those of the E. D. C. are usually on the train during movements of the index finger pursuitng sinusoidal waves of more than 2Hz.
西日本整形・災害外科学会の論文