Surface EMG Activity of the Suprahyoid and Infrahyoid Muscles along the Pitch Changes in Trained and Untrained Singers

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J Korean Soc Laryngol Phoniatr Logop > Volume 10(1); 1999 > Article

Journal of The Korean Society of Laryngology, Phoniatrics and Logopedics 1999;10(1): 24-29.

성악전공자와 비전공자에서의 음도에 따른 성대외근의 표면근전도 변화

윤영선, 손영익, 추광철, 김선일

성균관대학교 의과대학 삼성서울병원 이비인후과학교실

Surface EMG Activity of the Suprahyoid and Infrahyoid Muscles along the Pitch Changes in Trained and Untrained Singers

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ABSTRACT

Extrinsic laryngeal muscles are well known to be important for the classical singers. We tried to elucidate any differences in the function of above muscles between trained and untrained singers by non-invasive surface electromyography(EMG). Four trained sopranos and four untrained singers sang vowel /i/ at different pitch(E3, G3, C4, E4, G4, C5, E5, G5, C6). The EMG activities of the suprahyoid, infrahyoid and omohyoid muscles were measured using surface electrodes. In trained singers, infrahyoid muscle activities increased more than those of suprahyoid in most of pitch. To the contrary, in untrained singers, the pattern of EMG activities were variable among each subjects and the EMG activities of suprahyoid muscles were relatively greater than those of infrahyoid.

KEY WORDS： Surface EMG;Extrinsic laryngeal muscles;Singer;