Defective imitation of finger configurations in patients with damage in the right or left hemispheres: An integration disorder of visual and somatosensory information?
Defective imitation of finger configurations in patients with damage in the right or left hemispheres: An integration disorder of visual and somatosensory information?
复制标题
右半球或左半球受损的患者对手指形态的模仿有缺陷：视觉和体感信息的整合障碍？
DOI：
10.1016/j.bandc.2017.01.009
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发表时间：
2017
影响因子：
2.5
通讯作者：
Kaba H
中科院分区：
文献类型：
--
作者：
Okita M;Yukihiro T;Miyamoto K;Morioka S;Kaba H
为了探索模仿手指手势的机制，我们设计了一个简单的模仿任务，其中患者被指示在两种条件下复制手指配置：一种是他们可以看到自己的手（视觉反馈：VF），另一种是他们看不到自己的手（非视觉反馈：NVF）。根据NVF条件下模仿任务的得分，将左脑损伤（LBD）或右脑损伤（RBD）患者分别分为两组：模仿受损组（I-LBD和I-RBD），他们在五种模式中有两种或两种以上失败，对照组（C-LBD和C-RBD），他们犯了一个或没有错误。我们还测量了模仿的动作产生时间。即使在VF条件下，I-RBD组的表现也明显差于C-RBD组。相反，I-LBD组在NVF条件下选择性受损。在VF和NVF条件下，I-LBD组的模仿速度明显低于C-LBD组。这些结果表明，LBD患者的模仿受损部分是由于基于NVF条件的任务特异性的视觉和体感信息的异常整合。
To explore the mechanism underlying the imitation of finger gestures, we devised a simple imitation task in which the patients were instructed to replicate finger configurations in two conditions: one in which they could see their hand (visual feedback: VF) and one in which they could not see their hand (non-visual feedback: NVF). Patients with left brain damage (LBD) or right brain damage (RBD), respectively, were categorized into two groups based on their scores on the imitation task in the NVF condition: the impaired imitation groups (I-LBD and I-RBD) who failed two or more of the five patterns and the control groups (C-LBD and C-RBD) who made one or no errors. We also measured the movement-production times for imitation. The I-RBD group performed significantly worse than the C-RBD group even in the VF condition. In contrast, the I-LBD group was selectively impaired in the NVF condition. The I-LBD group performed the imitations at a significantly slower rate than the C-LBD group in both the VF and NVF conditions. These results suggest that impaired imitation in patients with LBD is partly due to an abnormal integration of visual and somatosensory information based on the task specificity of the NVF condition.