患有慢性偏瘫性中风的个体能够在单只手臂内正确匹配前臂位置。
Individuals with chronic hemiparetic stroke can correctly match forearm positions within a single arm.
作者信息
Gurari Netta, Drogos Justin M, Dewald Julius P A
机构信息
Department of Physical Therapy and Human Movement Sciences, Northwestern University, Chicago, IL 60611, United States.
Department of Physical Therapy and Human Movement Sciences, Northwestern University, Chicago, IL 60611, United States; Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, United States; Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL 60611, United States; Department of Biomechanical Engineering, Faculty of Engineering Technology, University of Twente, Enschede, The Netherlands.
出版信息
Clin Neurophysiol. 2017 Jan;128(1):18-30. doi: 10.1016/j.clinph.2016.10.009. Epub 2016 Oct 27.
OBJECTIVE
Previous studies determined, using between arms position matching assessments, that at least one-half of individuals with stroke have an impaired position sense. We investigated whether individuals with chronic stroke who have impairments mirroring arm positions also have impairments identifying the location of each arm in space.
METHODS
Participants with chronic hemiparetic stroke and age-matched participants without neurological impairments (controls) performed a between forearms position matching task based on a clinical assessment and a single forearm position matching task, using passive and active movements, based on a robotic assessment.
RESULTS
12 out of our 14 participants with stroke who had clinically determined between forearms position matching impairments had greater errors than the controls in both their paretic and non-paretic arm when matching positions during passive movements; yet stroke participants performed comparable to the controls during active movements.
CONCLUSIONS
Many individuals with chronic stroke may have impairments matching positions in both their paretic and non-paretic arm if their arm is moved for them, yet not within either arm if these individuals control their own movements.
SIGNIFICANCE
The neural mechanisms governing arm location perception in the stroke population may differ depending on whether arm movements are made passively versus actively.
目的
以往研究通过双臂位置匹配评估确定，至少一半的中风患者存在位置觉受损。我们调查了那些在镜像手臂位置时存在障碍的慢性中风患者在确定每只手臂在空间中的位置时是否也存在障碍。
方法
患有慢性偏瘫性中风的参与者以及年龄匹配的无神经功能障碍的参与者（对照组），基于临床评估进行了一项前臂间位置匹配任务，并基于机器人评估，使用被动和主动运动进行了一项单前臂位置匹配任务。
结果
在我们14名经临床判定存在前臂间位置匹配障碍的中风参与者中，有12名在被动运动时匹配位置时，其患侧和非患侧手臂的误差均大于对照组；然而，中风参与者在主动运动时的表现与对照组相当。
结论
如果为许多患有慢性中风的患者移动手臂，他们的患侧和非患侧手臂在匹配位置时可能都会存在障碍，但如果这些患者自己控制运动，则双臂均不存在障碍。
意义
中风人群中控制手臂位置感知的神经机制可能因手臂运动是被动还是主动而有所不同。
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