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Featured researches published by Yumi Sasaki.


THE LARYNX JAPAN | 1992

Radiographic Analysis of Laryngeal Movement during Phonation by Digital Fluorography

Yumi Sasaki; Hiroshi Okamura

Yumi Sasaki and Hiroshi Okamura Movements of laryngeal components for different vocal attacks were investigated with the use of a digital fluorography (DF) system. In this paper, three kinds of vocal attacks (soft , hard and breathy attack) were compared through subtracted images obtained with TID mode subtraction technique. In the hard attack, the vocal folds during adduction were thicker and the false vocal folds adduction was more marked than in the soft attack . The distention of the subglottal space due to the increase in subglottal presser was larger in the hard attack than in the soft one . In the breathy attack, the vocal folds during adduction were thinner than in the soft attack , and the false vocal folds did not adduct. These findings suggested an existence of a incomplete glottal closure before phonation.


Journal of Speech Language and Hearing Research | 1984

Harmonics-to-Noise Ratio and Psychophysical Measurement of the Degree of Hoarseness

Eiji Yumoto; Yumi Sasaki; Hiroshi Okamura


Archives of Otolaryngology-head & Neck Surgery | 1992

Analysis of laryngeal movement by digital subtraction laryngography

Hiroshi Okamura; Yumi Sasaki


Journal of Voice | 1991

Quantitative analysis of hoarseness using a digital sound spectrograph

Yumi Sasaki; Hiroshi Okamura; Eiji Yumoto


Nihon Kikan Shokudoka Gakkai Kaiho | 1996

Indication of Tracheotomy for Chronic Lung Disease

Yumi Sasaki; Katsuya Saeki


THE LARYNX JAPAN | 1990

Radiographic Analysis of Vocal Folds Movement during Phonation by Digital Fluorography

Yumi Sasaki; Toshihiro Mori; Hiroshi Okamura


Nihon Kikan Shokudoka Gakkai Kaiho | 1990

Radiographic analysis of laryngeal movement during phonation by digital fluorography.

Yumi Sasaki; Hiroshi Okamura


Practica oto-rhino-laryngologica | 1989

Acoustic analysis of hoarse voice by digital sound spectrography.

Yumi Sasaki


The Japan Journal of Logopedics and Phoniatrics | 1987

Effects of various factors on H/N measurements

Eiji Yumoto; Kazunori Okamoto; Yumi Sasaki; Hiroshi Okamura


The Japan Journal of Logopedics and Phoniatrics | 1985

Acoustic Analysis of Hoarseness Utilizing Sound Spectrograph

Yumi Sasaki; Eiji Yumoto; Hiroshi Okamura

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