Electromyographic study of suprahyoid muscles and intrinsic laryngeal muscles in dogs
- VernacularTitle:舌骨上肌与喉内肌的同步肌电生理实验研究
- Author:
Ni ZHOU
;
Zhiwen XU
;
Wensheng WEN
- Publication Type:Journal Article
- Keywords:
Laryngeal Muscles;
Electromyography;
Suprahyoid Muscles;
Intrinsic Laryngeal Muscles;
Lateral Cricoarytenoid Muscle
- From:
Chinese Archives of Otolaryngology-Head and Neck Surgery
2006;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To study the synchronous electromyograhic features of suprahyoid muscles [anterior digastric muscle(AD), posterior digastric muscle(PD),stylohyoid muscle(STH),mylohyoid muscle(MH)and geniohyoid muscle(GH)] and intrinsic laryngeal muscles [lateral cricoarytenoid muscle(LCA)and posterior cricoarytenoid muscle(PCA)]. METHODS Synchronous electromyograhic features of 13 dogs were observed under the circumstances of breath, swallowing and phonation. RESULTS ①AD, PD, STH, MH, GH and PCA discharged during inspiratory phase, while LCA discharged during expiratory phase. ②During swallow, suprahyoid muscles and LCA showed intensive synchronous discharge. The myoelectricity of PCA was suppressed while myopotential can be detected during intermission. ③During phonation, AD, PD, LCA and PCA showed an intensive synchronous discharge, while emergence time of PCA was later. GH and STH showed no myoelectricity activities. CONCLUSION①During phonation and swallowing, MH is synchronized with LCA. It can be chosen as the backup muscle for the reestablishment of glottic adduct function. ②During inspiratory phase, GH is synchronized with PCA. It can be chosen as the backup muscles for the reestablishment of vocal cord abduct function.
