Laryngeal closure pressure during phonation in humans.
We investigated the laryngeal closure pressure during sustained phonation in five healthy adult men with no pathological lesions in the glottis using a round pressure transducer with a diameter of 10 mm and a thickness of 1 mm. The transducer was placed between the vocal processes through the mouth. Subjects were asked to utter a sustained phonation of the vowel sound /eh/ at varying pitch and intensity in modal register. The laryngeal closure pressure ranged from 0 to 200 cmH2O. At a comfortable pitch and intensity, the pressure was below 50 cmH2O. The pressure was correlated with pitch, but not with intensity.
Yamana
T
T
Department of Otolaryngology, Shiga University of Medical Science, Seta, Otsu, Japan.
Kitajima
K
K
D000328:Adult; D001831:Body Temperature; D006801:Humans; D007830:Larynx / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D010699:Phonation / Q000502:physiology*; D014160:Transducers, Pressure; D014741:Video Recording