试点研究:体感缺失对慢性中风幸存者在伸手任务中对未知负荷的运动修正的影响。

IF 3.2 4区 医学 Q2 ENGINEERING, BIOMEDICAL
Biomedical Engineering Letters Pub Date : 2024-01-22 eCollection Date: 2024-05-01 DOI:10.1007/s13534-024-00348-5
Keonyoung Oh, William Zev Rymer, Junho Choi
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引用次数: 0

摘要

尽管最近的研究表明躯体感觉障碍与康复结果之间存在明显的相关性,但普遍存在的躯体感觉障碍如何影响中风幸存者的运动矫正能力和整体康复仍不清楚。为了探索躯体感觉系统的主要缺陷如何阻碍中风幸存者对各种外部负荷的运动矫正,我们对 13 名患有偏瘫的慢性中风幸存者进行了研究。在使用可编程触觉机器人完成伸手任务的过程中,我们意外引入了惯性、弹性或粘性负载,这些负载旨在施加各种力谱的扰动力。此外,还使用被动运动检测、手指到鼻子、镜子、重新定位和温斯坦压力测试对参与者的本体感觉和皮肤感觉进行了评估。然后对这些测量结果进行分析,以确定体感测量结果是否与估计的伸手能力参数(如初始方向错误、位置偏差、速度偏差和运动矫正速度)显著相关。在 13 名参与者中,有 5 名参与者的本体感觉受损,因为他们无法识别肘关节的被动运动,而且即使在熟悉区块后,他们仍然表现出较大的初始方向错误。这种持续发现的初始运动方向错误可能与无法绘制空间身体地图有关,特别是在开始伸手运动时计算初始关节扭矩。无论本体感觉是否受损,所有参与者都能表现出稳定、恒定的伸手运动轨迹。这凸显了本体感觉的作用,尤其是在伸手运动的早期阶段执行计划动作时。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A pilot study: effect of somatosensory loss on motor corrections in response to unknown loads in a reaching task by chronic stroke survivors.

Despite recent studies indicating a significant correlation between somatosensory deficits and rehabilitation outcomes, how prevailing somatosensory deficits affect stroke survivors' ability to correct their movements and recover overall remains unclear. To explore how major deficits in somatosensory systems impede stroke survivors' motor correction to various external loads, we conducted a study with 13 chronic stroke survivors who had hemiparesis. An inertial, elastic, or viscous load, which was designed to impose perturbing forces with various force profiles, was introduced unexpectedly during the reaching task using a programmable haptic robot. Participants' proprioception and cutaneous sensation were also assessed using passive movement detection, finger-to-nose, mirror, repositioning, and Weinstein pressure tests. These measures were then analyzed to determine whether the somatosensory measures significantly correlated with the estimated reaching performance parameters, such as initial directional error, positional deviation, velocity deviations, and speed of motor correction were measured. Of 13 participants, 5 had impaired proprioception, as they could not recognize the passive movement of their elbow joint, and they kept showing larger initial directional errors even after the familiarization block. Such continuously found inaccurate initial movement direction might be correlated with the inability to develop the spatial body map especially for calculating the initial joint torques when starting the reaching movement. Regardless of whether proprioception was impaired or not, all participants could show the stabilized, constant reaching movement trajectories. This highlights the role of proprioception especially in the execution of a planned movement at the early stage of reaching movement.

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来源期刊
Biomedical Engineering Letters
Biomedical Engineering Letters ENGINEERING, BIOMEDICAL-
CiteScore
6.80
自引率
0.00%
发文量
34
期刊介绍: Biomedical Engineering Letters (BMEL) aims to present the innovative experimental science and technological development in the biomedical field as well as clinical application of new development. The article must contain original biomedical engineering content, defined as development, theoretical analysis, and evaluation/validation of a new technique. BMEL publishes the following types of papers: original articles, review articles, editorials, and letters to the editor. All the papers are reviewed in single-blind fashion.
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