A quantitative and standardized robotic method for the evaluation of arm proprioception after stroke.
A quantitative and standardized robotic method for the evaluation of arm proprioception after stroke.
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用于评估中风后手臂本体感觉的定量和标准化机器人方法。
DOI：
10.1109/iembs.2011.6092029
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Scheidt,RobertA
中科院分区：
文献类型：
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作者：
Simo,LuciaS;Ghez,Claude;Botzer,Lior;Scheidt,RobertA
中风通常会导致运动和感觉障碍，这可能与表现出的功能障碍相互作用。本体感觉在肢体姿势和运动的规划和控制中发挥着重要作用；然而，本体感觉缺陷对运动功能的影响一直很难阐明，部分原因是现有临床试验的定性性质。我们提出了一种量化和标准化的方法，用于评估与运动功能评估直接相关的任务中的本体感觉。使用对手施加受控位移的机器人操作仪，对中风参与者进行评估，并与对照组进行比较，评估他们在两种选择、强迫选择范式中检测此类位移的能力。心理测量功能将作为检测手部移位的基础的决策过程参数化。该函数的形状由信号检测阈值和关于该阈值的响应的可变性确定。我们的自动程序区分了有本体感觉缺陷和没有本体感觉缺陷的参与者，并在大小上量化了功能性本体感觉，这对正在进行的对可比水平运动中运动功能退化的研究有意义。
Stroke often results in both motor and sensory deficits, which may interact in the manifested functional impairment. Proprioception is known to play important roles in the planning and control of limb posture and movement; however, the impact of proprioceptive deficits on motor function has been difficult to elucidate due in part to the qualitative nature of available clinical tests. We present a quantitative and standardized method for evaluating proprioception in tasks directly relevant to those used to assess motor function. Using a robotic manipulandum that exerted controlled displacements of the hand, stroke participants were evaluated, and compared with a control group, in their ability to detect such displacements in a 2-alternative, forced-choice paradigm. A psychometric function parameterized the decision process underlying the detection of the hand displacements. The shape of this function was determined by a signal detection threshold and by the variability of the response about this threshold. Our automatic procedure differentiates between participants with and without proprioceptive deficits and quantifies functional proprioceptive sensation on a magnitude scale that is meaningful for ongoing studies of degraded motor function in comparable horizontal movements.