Abstract
The present study examined the property of muscle (musculus abductor digiti minimi manus) control without external feedback, and compared it with the results of the magnitude production task. We developed the V test, in it subjects control their muscular tension with the movement of a target on a computer screen. Subjects accomplished three tasks the magnitude production with a 30s inter-stimulus interval, and the same task with a 3s inter-stimulus interval, and the V test. The results of magnitude production supported the previous studies. The results of the V test showed that in the decrease phase the results of all subjects fitted to the exponential curves. However, in the increase phase the data did not fit well, and no specific patterns appeared. We ascribed to the property of muscle control, and discussed the relationship to the physiological mechanism.
