Abstract
Motor control characteristics of the human visuomotor control system need to be analyzed in the three-dimensional (3D) space to study and imitate human movements. In this paper, we examined circular tracking movements on two planes in 3D space from a motor control perspective based on three temporospatial parameters in polar coordinates. Sixteen healthy human subjects participated in this study and performed circular target tracking movements rotating at 0.125, 0.25, 0.5, and 0.75 Hz in the frontal or sagittal planes in three-dimensional space. The results showed that two temporal parameter errors on each plane were proportional to the change in the target velocity. Furthermore, frontal plane circular tracking errors without depth for a spatial parameter were lower than those for sagittal plane circular tracking with depth. The experimental protocol and data analysis allowed us to analyze the motor control characteristics temporospatially for circular tracking movement with various depths and speeds in the 3D VR space.
Highlights
We studied and imitated human motion control mechanisms using a visually guided motor control system in the three-dimensional (3D) space
Differences in Circular Tracking Movement Based on ∆R in 3D virtual reality (VR) Space
For the circular tracking movement on both the frontal and sagittal planes, the difference between target trajectories and the tracer tended to increase as the target speed increased
Summary
We studied and imitated human motion control mechanisms using a visually guided motor control system in the three-dimensional (3D) space. To understand the visually guided motor control of humans accurately, we need to analyze visually guided tracking movements in 3D space directly and analyze important 3D space motor control characteristics such as depth perception. This is vital for workspace distance determination and motion establishment. We compared 3D circular tracking movement visuomotor control between monocular and binocular vision. Our previous study obtained a similar result, where the circular tracking movement accuracy in binocular vision showed approximately 4.5 times the advantage over monocular vision on both frontal and sagittal planes in a 3D VR environment
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