Properties of Internal Speed Control and Psychophysiological Response during Continuous Forearm Rotation Movement

Abstract

This study investigated the properties of speed control and psychophysiological response when subjects changed movement speed internally. The task consisted of a continuous forearm rotational movement, which 14 women performed under 3 conditions, namely, (1) Preferred: the subject performed the task at a freely selected speed, (2) Slow: the subject changed the speed in two steps from preferred to a slower pace (slow, then very slow), (3) Fast: the subject changed the speed in two steps from preferred to a faster pace (fast, then very fast). Rotation speed and the coefficient of variation were measured to evaluate within-subject variability. Under the Preferred condition, there were no significant differences in rotation speed or coefficient of variation during the trials. However, under Slow and Fast conditions, the standard variation scores and coefficient of variation indicated different tendencies. Under the Fast condition, although the standard variation increased with the faster speed, the coefficient of variation decreased. On the other hand, the coefficient of variation increased under the Slow condition. Preferred speed had a significant positive relationship to the slow, very slow, fast, and very fast speeds. Heart rate (R-R interval) and EEG spectral intensity measurements showed no significant changes among the three conditions: however, respiration frequency significantly increased during Fast as compared to Preferred and Slow conditions. These results suggest that a preferred speed for continuous movement exists and that it is closely related to internal speed control as a psychological criterion. Furthermore, different movement speeds may reflect different psychophysiological responses.

Effects of angular gain transformations between movement and visual feedback on coordination performance in unimanual circling

“…It could be that slow movements with high gain are difficult because of the slowness of the hand movements; participants may have preferred to move faster. Studies have shown that there is a preferred movement speed for continuous movements, which also influences how movements at other speeds are performed (Naruse et al, 2001). This interpretation is corroborated by the results on the CE, which indicated that participants were more in lead of the stimulus with higher gains and slower speed.…”

Prediction of shot success for basketball free throws: Visual search strategy

“…Thus, the PP can be seen as a psychological standard for the judgement of a set of actions in the overall movement perception (Tajima & Choshi, 1999). Movements at a speed close to the PP are perceived as syntonic movements and those about 30-40% slower or faster than the PP are seen as non-syntonic movements (Naruse, Sakuma, & Hirai, 2001). This syntony between the presented video speed and person's sense of movement speed may have influenced the player's predictive skill and visual search activities.…”

Deep-Learning-Based Recovery of Missing Optical Marker Trajectories in 3D Motion Capture Systems

“…During the exercises, each subject alternated between the right and left limbs for abduction, adduction, and hip flexion. The subjects gradually increased the exercise speed every 10 s, from the slowest to the fastest possible speed, according to their perceptions [ 30 ]. Each volunteer performed random movements with the calibration wand that were recorded for 50 s (equating to 5000 frames) within the carefully defined zone corresponding to the collective field of view of all cameras, as illustrated in Figure 2 a.…”