Assessment of Vocal Attack During Voice Therapy Exercises Using Photoglottogram

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  • Hyodo Naoki
    Department of Rehabilitation, Matsuyama Rehabilitation Hospital
  • Taguchi Aki
    Department of Otorhinolaryngology, Matsuyama Rehabilitation Hospital Department of Communication Sciences and Disorders, Faculty of Health and Welfare, Prefectural University of Hiroshima
  • Ijuin Mutsuo
    Department of Communication Sciences and Disorders, Faculty of Health and Welfare, Prefectural University of Hiroshima
  • Shiromoto Osamu
    Department of Communication Sciences and Disorders, Faculty of Health and Welfare, Prefectural University of Hiroshima

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Other Title
  • 音声治療手技の起声に関する研究
  • ―光電声門図（PGG）を用いた検討―

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<p>Vocal attack during voice therapy exercises was investigated using photoglottogram (PGG). Eighteen healthy adult subjects (10 males and 8 females) were included in the study. First to fifth vocal waves at natural voice, hard and soft voice onset, and semi-occluded vocal tract exercises (SOVTE: humming, tubing, lip trills) were assessed. We also calculated 25% vocal cord open quotient (OQ) using PGG and then compared these parameters. The 25% OQ did not show any sex difference. The first wave 25% OQ was low in hard attack and high in soft voice onset. Changes in the 25% OQs at voice onset and those of the first to fifth waves differed depending on the SOVTE, indicating different voice onset patterns. These results suggest that adequate selection of SOVTE tailored for each patient may have benefit in furthering voice improvement.</p>

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