再建舌症例と単純舌切除症例の構音機能-サウンドスペクトログラフによる経時的観察-

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To compare the effects on vowel formants, we analyzed the speech samples obtained from three patients having the tongue reconstructed with a pectoralis major myocutaneous island flap, and from two patiens with hemiglossectomy alone.<BR>At periodic intervals after hemiglossectomy, patients' speech was recorded on a SONY tape recorder and analyzed by a KAY ELEMETRIC sound spectrogram. Isovowel lines of the vowels, /i/, /e/, /a/, /o/ and /u/ and F1-F2 plots (Fant G, 1960 and Peterson E, 1951) for a group of normal subjects, and for the glossectomy subjects in both resection alone and reconstruction cases were compared. For the purpose of supporting the premise that the improvement in the postoperative movement of the tongue rendered by improvement in the scores of F1-F2 plots should result in the increase in actual speaking time, a SPEAKING TIMER, an apparatus for measuring time of vibration of the vocal cords was used.<BR>We found that recovery from abnormal to normal vowel pronuciation progressed during the stable stage and termination of the postoperative cicatricial healing of wounds, both in patients with resection alone and reconstruction. Recovery from abnormal to normal vowel pronuciation was reached within a postoperative couple of years. Postoperative mean speaking times (speaking minutes/measured hours) were found to be 10 minutes 12 seconds ± 5 minutes (n=33 days) .
日本音声言語医学会の論文