标题：Asymmetrical Mass Object Manipulations during Dominant and Non-dominant Precision Grip
作者：Hu, Wenjing ;Wei, Na ;Li, Ke ;Yue, Shouwei
作者机构：[Hu, Wenjing ;Li, Ke ] Laboratory of Motor Control and Rehabilitation, Institute of Biomedical Engineering, School of Control Science and Engineering, 更多
会议名称：14th IEEE International Conference on Signal Processing, ICSP 2018
会议日期：12 August 2018 through 16 August 2018
来源：International Conference on Signal Processing Proceedings, ICSP
关键词：Asymmetrical mass; Handedness; Motor adaptation; Motor control; Precision grip
摘要：Daily practices and habits make human handedness, which causes both hands having asymmetric performances in many tasks. Furthermore, several literature had suggested there was obvious differences between both hemispheres. The present study aimed to investigate the motor adaptation of manipulating an unfamiliar non-uniform weight-distribution object and the differences between both hands. Sixteen young healthy right- handed subjects (eight female and eight male) were asked to grip and lift the object using the dominant and non-dominant hand separately, and they did not know where the weight was located on the object. During lifting and holding periods, subjects should keep the object stable as far as possible to reduce rotation and tilt. The object peak roll and time interval of compensatory moment increased to 50 N•mm were calculated and quantified to analyze the motor adaptation of both hands. The statistical results had shown with the trial course, both peak roll and time interval had significantly decreased, especially between the first and second trial, indicating reinforced feed-forward and feedback control. However, there was no significant difference between the dominant and the non-dominant hands. These results had revealed the dominant hand was not superior to the non-dominant hand in the motor adaptation including accurate force or torque modulation during unfamiliar object manipulation. In a certain degree, it suggested that non-skilled motor adaptation tasks under visual feedback had no differences between both hands. In addition, generally, with more than two or three practices, subjects could have a better manipulation of unfamiliar objects with correct feed-forward and proper feedback control. © 2018 IEEE.