Functional mapping of the pelvic floor and sphincter muscles from high-density surface EMG recordings.
Functional mapping of the pelvic floor and sphincter muscles from high-density surface EMG recordings.
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DOI：
10.1007/s00192-016-3026-4
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发表时间：
2016-11
影响因子：
1.8
通讯作者：
Zhang Y
中科院分区：
文献类型：
--
作者：
Peng Y;He J;Khavari R;Boone TB;Zhang Y
了解骨盆底和括约肌的神经支配对了解女性骨盆底功能障碍的病理生理学具有重要意义。本研究旨在介绍我们的高密度阴道内和直肠内肌电图（EMG）探头和一个全面的神经支配区（IZ）成像技术的基础上，高密度肌电图读数，以表征IZ分布。阴道内和直肠内探头均覆盖有高密度表面肌电图电极网格（8 X 8）。采集了10名健康女性受试者盆底最大自主收缩时的表面肌电信号。肌电图分解分离运动单位动作电位（MUAP），然后定位其IZ。在阴道和直肠表面成功采集了高密度表面EMG信号。骨盆底和肛门括约肌的多个肌肉群的肌肉活动的传播模式清晰可见。在每次收缩期间，阴道探头和直肠探头分别检测到多达218和456次重复的运动单位。MUAP被分离，其IZs在不同的方向和深度被识别。所提出的探针能够提供骨盆底和括约肌的神经支配区的全面映射。它们可以在临床实践中用作诊断和预防工具。
Knowledge of the innervation of pelvic floor and sphincter muscles is of great importance to understanding the pathophysiology of female pelvic floor dysfunctions. This study aims to present our high-density intravaginal and intrarectal electromyography (EMG) probes and a comprehensive innervation zone (IZ) imaging technique based on high-density EMG readings to characterize the IZ distribution. Both intravaginal and intrarectal probes are covered with a high-density surface electromyography electrode grid (8 X 8). Surface EMG signals were acquired in 10 healthy female subjects during maximum voluntary contractions of their pelvic floor. EMG decomposition was performed to separate the motor unit action potentials (MUAPs) and then localize their IZs. High-density surface EMG signals were successfully acquired over the vaginal and rectal surfaces. The propagation patterns of muscle activity were clearly visualized for multiple muscle groups of the pelvic floor and anal sphincter. During each contraction, up to 218 and 456 repetitions of motor units were detected by the vaginal probe and the rectal probe, respectively. MUAPs were separated with their IZs identified at various orientations and depths. The proposed probes are capable of providing a comprehensive mapping of the innervation zones of the pelvic floor and sphincter muscles. They can be employed as diagnostic and preventative tools in clinical practices.
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