The Significance of Body Part as Tool Errors in Limb Apraxia
The Significance of Body Part as Tool Errors in Limb Apraxia
复制标题
身体部位作为工具错误在肢体失用症中的意义
作者：
A. Raymer;L. Maher;A. Foundas;K. Heilman;L. Rothi
当做手势指挥时，患有左脑损伤的人经常会犯错误，他们会把身体的某个部位当作工具来使用（BPT）。一些临床医生质疑这种错误的重要性，因为没有脑损伤的受试者有时也会做出BPT反应。我们分析了LBD和正常受试者的BPT错误，这些受试者在出现不适当的BPT反应时被重新指导修改。我们还分析了正常受试者的错误，这些受试者在发生BPT时从未接受过重新指导。虽然接受再指导的LBD受试者比接受再指导的正常受试者产生更多的BPT错误，但LBD受试者与未接受再指导的正常受试者没有差异。当被重新指导时，正常对照组的受试者几乎正确地修改了所有的BPT错误，而LBD受试者没有修改BPT错误。这些研究结果强调，当出现BPT错误时，需要重新指导，以确定它是否代表真正的BPT错误，这是肢体失用症的标志。
When pantomiming to command, individuals with left hemisphere brain damage (LBD) often produce errors in which they use a body part as if it were the tool (BPT). Some clinicians question the significance of this type of error because subjects without brain damage at times also make BPT responses. We analyzed BPT errors in LBD and normal subjects who were reinstructed to modify the inappropriate BPT responses when they occurred. We also analyzed errors in normal subjects who were never reinstructed if a BPT occurred. Whereas LBD subjects who were reinstructed produced significantly more BPT errors than normals who were also reinstructed, LBD subjects were not different from normals who were not reinstructed. When reinstructed, normal control subjects correctly modified virtually all BPT errors, whereas LBD subjects did not modify BPT errors. These findings underscore the need for reinstruction when a BPT error occurs to determine whether it represents a true BPT error, a sign of limb apraxia.