Peripheral component of laryngeal and pharyngeal motor evoked potentials.
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.
Şişli Etfal Education and Research Hospital, Department of Neurology, Istanbul, Turkey. Electronic address: munevvergokyigit@gmail.com.
Munevver
M
Celik Gokyigit
Şişli Etfal Education and Research Hospital, Department of Otolaryngology, Head and Neck Surgery, Istanbul, Turkey.
Ibrahim
I
Ercan
Şişli Etfal Education and Research Hospital, Department of Otolaryngology, Head and Neck Surgery, Istanbul, Turkey.
Selma
S
Seker
Şişli Etfal Education and Research Hospital, Department of Neurology, Istanbul, Turkey.
Lale
L
Gundogdu Celebi
Ege University Medical School Hospital, Department of Neurology, İzmir, Turkey.
Cumhur
C
Ertekin
D000328:Adult; D004576:Electromyography / Q000295:instrumentation / Q000379:methods; D019054:Evoked Potentials, Motor; D005260:Female; D006801:Humans; D007821:Laryngeal Muscles / Q000294:innervation / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D010609:Pharyngeal Muscles / Q000294:innervation / Q000502:physiology*; D014630:Vagus Nerve / Q000502:physiology*
Crico-pharyngien; Cricopharyngeus; Déglutition; Nerf vague; PEM périphériques; Peripheral MEPs; Swallowing; Thyro-aryténoïdien; Thyroarytenoideus; Vagus nerve