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Updated: Mar 19, 2026

An Implantable System For Chronic In Vivo Electromyography
Published on: April 21, 2020
Peripheral component of laryngeal and pharyngeal motor evoked potentials
Munevver Celik Gokyigit1, Ibrahim Ercan2, Selma Seker2
1Şişli Etfal Education and Research Hospital, Department of Neurology, Istanbul, Turkey.
Abstract:
In this study, the responses of thyroarytenoid (TA) and cricopharyngeus (CP) muscles were simultaneously recorded to peripheral magnetic stimulation of the vagus nerve. Recordings were performed in 13 subjects by means of concentric needle EMG electrodes inserted in the TA and CP. Magnetic shocks were delivered to the vagus nerve with a round coil placed occipitally, while EMG was silent in the TA. In all subjects, clear-cut responses were obtained simultaneously in both muscles. In TA compared to CP, the maximum amplitude of the responses were higher, whereas the onset latency was shorter. Our results revealed that simultaneous recordings of TA and CP motor responses to occipital magnetic stimulation enabled a reliable evaluation of their peripheral innervation by the vagus nerve.
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