Graduate Department of Rehabilitation Science, University of Toronto, Toronto, ON, Canada.
J Clin Exp Neuropsychol. 2011 Nov;33(9):954-71. doi: 10.1080/13803395.2011.578570. Epub 2011 Jul 4.
Limb apraxia is a disorder affecting performance of gestures on verbal command (pantomime), on imitation, and/or in tool and action recognition. We aimed to examine recovery on tasks assessing both conceptual and production aspects of limb praxis in left (n = 22) and right (n = 15) stroke patients. Patients were assessed longitudinally on four conceptual tasks (action identification, tool naming by action, tool identification, and tool naming) and five production tasks (pantomime, pantomime by picture, concurrent imitation, delayed imitation, and tool use). They were grouped as impaired or not relative to the performance of a control sample (n = 27) and as acute-subacute (first assessment within 3 months post stroke) or chronic (over 3 months post stroke). Hierarchical linear modeling was used to analyze the data. Acute-subacute and chronic patients had similar average performance. All tasks, except action identification, showed evidence of recovery in both acute and chronic impaired patients. A faster rate of recovery among acute-subacute patients was observed only in the two pantomime tasks (action identification and tool identification were not compared on this factor).
肢体失用症是一种影响口头指令（模仿）、模仿和/或工具和动作识别中手势执行的障碍。我们旨在检查左（n=22）和右（n=15）中风患者在评估肢体实践的概念和产生方面的任务上的恢复情况。患者在四个概念任务（动作识别、通过动作命名工具、工具识别和工具命名）和五个产生任务（模仿、模仿图片、同时模仿、延迟模仿和工具使用）上进行了纵向评估。他们根据对对照组（n=27）的表现被分为受损或未受损，以及急性-亚急性（中风后 3 个月内的第一次评估）或慢性（中风后 3 个月以上）。分层线性建模用于分析数据。急性-亚急性和慢性患者的平均表现相似。除了动作识别外，所有任务在急性和慢性受损患者中都显示出恢复的证据。在急性-亚急性患者中观察到恢复速度较快，仅在两个模仿任务中（未在该因素中比较动作识别和工具识别）。
