Abstract：
The evidence for the hemispheric specialization of motor planning reveals several inconsistencies between the left-lateralized hypothesis and a distributed system across the hemispheres. We compared participants with left hemiplegic cerebral palsy (HCP) to right-handed control subjects in this study\'s first experiment by inviting them to perform a motor planning task. Participants were required to release the start button, grasp a hexagon, and rotate it according to the instructions. In the second experiment, we compared left-HCP subjects with right-HCP subjects inviting them to perform the same task (we used the data for left-HCP subjects from the first experiment). P2 amplitude, as well as planning time, grasping time, releasing time, and initial grip selection planning patterns, were used as outcome measures in both experiments. The first experiment revealed that controls acted more quickly and chose more effective planning patterns. Also, the P2 amplitude was smaller in left-HCP subjects than in control subjects. No significant group effect was observed in the second experiment for any movement-related measure or P2. At the neural level, however, there was an interaction between \'region\' and \'group,\' indicating the distinction between the two groups in the right region. The results are discussed in terms of motor planning\'s hemispheric distribution and individual differences in the HCP group.
摘要：
关于运动计划的半球专业化的证据表明，左撇子假设与整个半球的分布式系统之间存在一些不一致之处。在本研究的第一个实验中，我们通过邀请他们执行运动计划任务，将患有左偏瘫脑瘫（HCP）的参与者与右撇子对照受试者进行了比较。参与者被要求释放开始按钮，抓住一个六边形，并按照说明书旋转。在第二个实验中,我们比较了左HCP受试者和邀请他们执行相同任务的右HCP受试者(我们使用了第一个实验的左HCP受试者的数据).P2振幅，以及计划时间，把握时间,释放时间,和初始抓地力选择规划模式，在两个实验中都用作结果测量。第一个实验表明，控件的动作更快，并选择了更有效的计划模式。此外，左HCP受试者的P2振幅小于对照组。在第二个实验中，任何运动相关的测量或P2均未观察到明显的组效应。在神经层面，然而,\'区域\'和\'组之间存在交互，\'指示右侧区域中两组之间的区别。根据HCP组的运动计划半球分布和个体差异对结果进行了讨论。
