Akihito Yamauchi1, Hisayuki Yokonishi2, Hiroshi Imagawa3, Ken-Ichi Sakakibara4, Takaharu Nito3, Niro Tayama5, Tatsuya Yamasoba3. 1. Department of Otolaryngology, The University of Tokyo Hospital, Tokyo, Japan. Electronic address: drachilles23@yahoo.co.jp. 2. Department of Otolaryngology, The Tokyo Metropolitan Police Hospital, Tokyo, Japan. 3. Department of Otolaryngology, The University of Tokyo Hospital, Tokyo, Japan. 4. Department of Communication Disorders, The Health Sciences University of Hokkaido, Ishikari-Gun, Hokkaido, Japan. 5. Department of Otolaryngology and Tracheo-esophagology, The National Center for Global Health and Medicine, Tokyo, Japan.
Abstract
INTRODUCTION: Kymography is an effective method for assessing temporal patterns of vocal fold vibrations. Because kymographic data for a number of normal speakers based on high-speed digital imaging (HSDI) were limited in the literature, this prospective study was conducted to provide normative kymographic HSDI data and clarify gender- and age-related normal variations. METHODS: Vocally healthy adults were divided into young (≤35 years) and elderly groups (≥65 years). Kymograms were recomposed from HSDI data at the midglottal level, and kymographic parameters were analyzed quantitatively. Then gender- and age-related differences were evaluated. RESULTS: A total of 26 young subjects (9 men and 17 women, mean age: 27 years) and 20 elderly subjects (8 men and 12 women, mean age: 73 years) were investigated. Obtained data generally matched the values in the literature. Slight asymmetry was seen in all groups, with the elderly subjects having more evident asymmetry than the young subjects. Most of the kymographic parameters showed a negative correlation with fundamental frequency (F0), whereas the open quotient displayed a positive correlation with F0. There were significant intergroup differences in F0, amplitude and lateral peak at a speaking F0. CONCLUSIONS: The present quantitative findings generally matched the qualitative kymographic data reported in the literature. When judging whether a vibratory pattern is normal or pathological, both gender and age should be taken into account, because gender- and age-related variations of symmetry, F0, and phase were frequently observed in the present study.
INTRODUCTION: Kymography is an effective method for assessing temporal patterns of vocal fold vibrations. Because kymographic data for a number of normal speakers based on high-speed digital imaging (HSDI) were limited in the literature, this prospective study was conducted to provide normative kymographic HSDI data and clarify gender- and age-related normal variations. METHODS: Vocally healthy adults were divided into young (≤35 years) and elderly groups (≥65 years). Kymograms were recomposed from HSDI data at the midglottal level, and kymographic parameters were analyzed quantitatively. Then gender- and age-related differences were evaluated. RESULTS: A total of 26 young subjects (9 men and 17 women, mean age: 27 years) and 20 elderly subjects (8 men and 12 women, mean age: 73 years) were investigated. Obtained data generally matched the values in the literature. Slight asymmetry was seen in all groups, with the elderly subjects having more evident asymmetry than the young subjects. Most of the kymographic parameters showed a negative correlation with fundamental frequency (F0), whereas the open quotient displayed a positive correlation with F0. There were significant intergroup differences in F0, amplitude and lateral peak at a speaking F0. CONCLUSIONS: The present quantitative findings generally matched the qualitative kymographic data reported in the literature. When judging whether a vibratory pattern is normal or pathological, both gender and age should be taken into account, because gender- and age-related variations of symmetry, F0, and phase were frequently observed in the present study.
Authors: Veronika Birk; Stefan Kniesburges; Marion Semmler; David A Berry; Christopher Bohr; Michael Döllinger; Anne Schützenberger Journal: J Acoust Soc Am Date: 2017-10 Impact factor: 1.840
Authors: Michael Döllinger; Pablo Gómez; Rita R Patel; Christoph Alexiou; Christopher Bohr; Anne Schützenberger Journal: PLoS One Date: 2017-11-09 Impact factor: 3.240