表面 EMG 式样的客观解释 一个自动的反应指标 (VRI)

中文页数:11  英文字数:4344页数:16

Abstract
 Individuals with incomplete spinal cord injuries (SCI) retain varying degrees of voluntary motor control. The complexity of the motor control system and the nature of the recording biophysics have inhibited efforts to develop objective measures of voluntary motor control. This paper proposes the definition and use of a voluntary response index (VRI) calculated from quantitative analysis of surface electromyographic (sEMG) data recorded during defined voluntary movement as a sensitive measure of voluntary motor control in such individuals. The VRI is comprised of two numeric values, one derived from the total muscle activity recorded for the voluntary motor task (magnitude), and the other from the sEMG distribution across the recorded muscles (similarity index (SI)). Calculated as a vector, the distribution of sEMG from the test subject is compared to the average vector calculated from sEMG recordings of the same motor task from 10 neurologically intact subjects in a protocol called brain motor
control assessment (BMCA). To evaluate the stability of the VRI, a group of five healthy subjects were individually compared to the prototype, average healthy-subject vectors for all of the maneuvers. To evaluate the sensitivity of this method, the VRI was obtained from two SCI subjects participating in other research studies. One was undergoing supported treadmill ambulation training, and the other a controlled withdrawal of anti-spasticity medications. The supported treadmill training patient’s VRI,calculated from pre- and post-training BMCA recordings, reflected the qualitative changes in sEMG patterns and functional improvement of motor control. The VRI of the patient followed by serial BMCA during medication withdrawal also reflected changes in the motor control as a result of changes in anti-spasticity medication. To validate this index for clinical use, serial studies using larger numbers of subjects with compromised motor control should be performed.
Keywords: Voluntary motor control; Surface electromyography; Spinal cord injury; Index

摘  要
 患有不完全的脊髓受伤 (SCI) 的个体保有改变自动马达控制的程度。马达的控制复杂系统和记录的生物物理学的性质已经禁止努力发展对自动的马达客观衡量控制. 这一张纸计画来自数据在定义如对自动的马达敏感衡量如此的个体控制的自动运动的时候记录的数量表面 肌电信号(sEMG) 的分析定义和一个被计算的自动回应索引 (VRI) 的使用. VRI 二数值的价值被包含, 一起源于为自动的马达被记录横过被记录的肌肉工作 (大小), 和来自 sEMG 分配的另一个的总肌肉活动 ( 类似索引 (SI)). 计算如一个矢量,来自测试主题的 sEMG 的分配被与从相同的马达一个被认为脑是马达的记录来自 10个神经学上尚未被人碰过的主题工作的 sEMG 录音被计算的平均矢量相较
 控制评估 (BMCA). 为了要评估 VRI 的安定,一群五个健康的主题个别地被与原型相较, 平均的健康- 主题矢量对于所有的演习. 为了要评估这一个方法的敏感,VRI 被获得从二个 SCI 主题参与其他的研究研究. 一正在遭受支援踏车移动训练 , 和另一个一个反强直药物治疗的受约束撤退. 被支援的踏车训练病人的 VRI,从前和后训练 BMCA 录音计算,反映在 sEMG 式样方面的性质上的改变和马达控制的功能进步. 在结果方面的改变在也被反映的药物治疗撤退期间被连续 BMCA 跟随的病人 VRI 在马达的控制中改变反 spasticity 药物治疗. 为了要为临床的使用使这一个索引有效, 连续的研究和妥协处理马达的控制一起使用主题的较大数量应该被运行.
 
关键字:自动的马达控制;肌肉神经电探器; 脊髓受伤;

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