The effect of orientation on prehension movement time
The effect of orientation on prehension movement time
复制标题
方向对抓取运动时间的影响
作者：
E. Bergen;L. V. Swieten;Justin H. G. Williams;M. Mon
我们探索了手的方向和运动时间之间的关系。三组参与者（每组n = 8人）被要求抓住在以下平面之一旋转的物体：(1)冠状面；(2)矢状;(3)水平。在冠状面，旋转需求直接映射到与单个关节水平自由度运动相关的神经肌肉需求。在旋转的程度（旋前或旋后）和持续时间之间发现了一个简单的合法关系。在矢状面和水平面上旋转的物体的抓握动作产生了不同的运动模式。这些模式增加了肌肉水平的自由度（更高的神经肌肉需求）和相应的运动持续时间，尽管不是以简单的方式增加。本研究的结果明确地表明，物体取向影响伸手-抓握运动的持续时间。
We explored the relationship between hand orientation and movement time. Three groups of participants (n = 8 per group) were asked to grasp an object rotated in one of the following planes: (1) coronal; (2) sagittal; (3) horizontal. In the coronal plane, the rotational requirements directly mapped onto the neuromuscular demands associated with a single joint-level degree of freedom movement. A simple lawful relationship was found between the extent of rotation (pronation or supination) and duration. Reach-to-grasp movements to objects rotated in the sagittal and horizontal plane produced different movement patterns. These patterns increased the muscle level degrees of freedom recruited (higher neuromuscular demands) and movement duration increased correspondingly though not in a simple manner. The results of the present study show unambiguously that object orientation influences the duration of reach-to-grasp movements.
帕金森病中伸手抓握运动模式的稳定性。
DOI：
10.1093/brain/120.11.2093
发表时间：
1997
期刊：
Brain : a journal of neurology
影响因子：
--
作者：
Tresilian,JR;Stelmach,GE;Adler,CH
通讯作者：
Adler,CH