CONTROL OF MOVEMENT IN THE PREFERRED AND NON-PREFERRED HANDS
CONTROL OF MOVEMENT IN THE PREFERRED AND NON-PREFERRED HANDS
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DOI：
10.1080/14640747908400755
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发表时间：
1979-01-01
影响因子：
1.7
通讯作者：
TURNER, A
中科院分区：
文献类型：
--
作者：
ANNETT, J;ANNETT, M;TURNER, A
使用钉板任务在人类中研究了偏好和非偏好手之间技能差异的性质。实验一考察了不同运动幅度和目标容忍度对成绩的影响。手之间的差异与公差有关，而不是运动幅度。第二项研究分析了熟练的受试者的电影记录，证实了这一假设，即手之间的大部分差异是由于非首选手在定位阶段的相对缓慢，涉及小的纠正运动。错误的类型和数量的分析表明，这不是由于运动的持续时间的差异，但其频率增加，这意味着更高的精度与首选的手瞄准。虽然最初的粗略分析暗示反馈处理的技能差异，更详细的分析表明，运动输出的非首选的手只是更多的变量。
The nature of the difference in skill between the preferred and non-preferred hands was investigated in humans using a peg-board task. The 1st experiment examined the effects of varying movement amplitude and target tolerance on performance. The difference between hands was related to tolerance rather than movement amplitude. The 2nd study analyzed a film record of well-practiced subjects, confirming the hypothesis that most of the difference between hands is due to relative slowness of the non-preferred hand in the positioning phase involving small corrective movements. Analysis of the type and number of errors suggested that this is not due to differences in duration of movements but to their increased frequency, implying greater accuracy of aiming with the preferred hand. While the initial gross analysis implicated feedback processing in skill differences the more detailed analysis suggests that motor output of the non-preferred hand is simply more variable.