IMITATING GESTURES AND MANIPULATING A MANNIKIN - THE REPRESENTATION OF THE HUMAN-BODY IN IDEOMOTOR APRAXIA
IMITATING GESTURES AND MANIPULATING A MANNIKIN - THE REPRESENTATION OF THE HUMAN-BODY IN IDEOMOTOR APRAXIA
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DOI：
10.1016/0028-3932(94)00104-w
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发表时间：
1995-01-01
期刊：
影响因子：
2.6
通讯作者：
GOLDENBERG, G
中科院分区：
文献类型：
--
作者：
GOLDENBERG, G
对左脑损伤（LED）、右脑损伤（RED）患者和对照组进行无意义手势模仿测试。除了模仿自己的身体，患者还被要求在一个真人大小的人体模型上复制这些手势。手工灵巧性通过珠的操作进行评估，一般视觉空间能力通过区组设计。当在人体模型上进行模仿评估时，在自己身上模仿手势时表现出失用症的LED患者的得分明显低于其他任何一组。相比之下，在块设计和珠的操作与RBD患者不仅低于LED患者没有失用症，但也apractic患者。CT扫描分析显示，失用症发生在额叶、顶叶和深部病变，无论病变部位如何，都存在操纵假人的障碍。这些结果支持了以下论点：失用症中无意义手势的模仿受损的基础缺陷应在概念水平上寻找。也许，失用症患者无法唤起和表现关于人体的概念性知识，而这些知识对于完成模仿手势这一看似简单的任务是必要的。
Imitation of meaningless gestures was examined in patients with left brain damage (LED), right brain damage (RED) and controls. In addition to imitation on the own body, patients were asked to replicate the gestures on a life-sized mannikin. Manual dexterity was assessed by manipulation of beads, and general visuospatial abilities by block-design. LED patients who displayed apraxia when imitating gestures on their own bodies scored dramatically worse than any other group when imitation was assessed on the mannikin. By contrast, on block-design and manipulation of beads patients with RBD were inferior not only to LED patients without apraxia but also to apractic patients. Analysis of CT scans revealed that apraxia occurred with Frontal, parietal and deep lesions, and that the impairment on the manipulation of the mannikin was present regardless of lesion site. The results support the contention that the basic deficit underlying impaired imitation of meaningless gestures in apraxia is to be sought al a conceptual level. Possibly, patients with apraxia are not able to evoke and represent conceptual knowledge about the human body which is necessary for performing the apparently simple task of imitating gestures.