Influence of placement sites of the active recording electrode on CMAP configuration in the trapezius muscle
| Autor: | Toshio Okamoto, Katsumi Kurokawa, Akio Asano, Taiji Nagai, Yoshihide Sunada, Shoji Hemmi, Masahito Mihara, Tatsufumi Murakami |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Supraspinatus muscle
Nerve root Accessory nerve Compound muscle action potential NCS nerve conduction study SBMA spinal–bulbar muscular atrophy lcsh:RC321-571 03 medical and health sciences CoV coefficient of variation 0302 clinical medicine Active recording electrode Physiology (medical) Recording electrode medicine 030212 general & internal medicine lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry CSA cervical spondylotic amyotrophy CMAP compound muscle action potential medicine.diagnostic_test Chemistry Nerve conduction study Trapezius muscle Anatomy ALS amyotrophic lateral sclerosis Neurology Clinical and Research Article Volume conduction Neurology (clinical) SD standard deviation 030217 neurology & neurosurgery TM trapezius muscle |
| Zdroj: | Clinical Neurophysiology Practice, Vol 3, Iss, Pp 54-58 (2018) Clinical Neurophysiology Practice |
| Popis: | Highlights • The active recording electrode site influences the CMAP waveform of the trapezius muscle (TM). • CMAP becomes high by placement of the active recording electrode 2 cm behind the belly of the TM. • Volume conduction from the supraspinatus muscle affects the CMAP waveform of the TM. Objective We investigated how the active electrode placement site influences compound muscle action potential (CMAP) configuration of the upper trapezius muscle (TM). Methods A nerve conduction study of the accessory nerve was performed, and the CMAPs obtained with two different placement sites, i.e., placement of the active recording electrode on the belly of the upper TM (CMAP-A) and placement of the electrode 2 cm behind the belly (CMAP-B), were compared. CMAPs were also obtained with the active recording electrode placed in the supraspinous fossa (CMAP-C). Results All CMAPs were recorded from 21 healthy volunteers. The mean peak-to-peak amplitude of CMAP-B was 3.4 mV higher than that of CMAP-A (11.0 ± 4.0 mV vs. 14.4 ± 4.9 mV; P |
| Databáze: | OpenAIRE |
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