Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics (대한후두음성언어의학회지)

The Korean Society of Laryngology, Phoniatrics and Logopedics. (대한후두음성언어의학회)
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Voice Onset Time in Patients with Bilateral Vocal Nodules

양측성 성대결절 환자의 발성시작시간(VOT)에 관한 연구

  • Park, Sun-Young (The Institute of Logopedics & Phoniatirics, Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Kim, Seong-Tae (The Institute of Logopedics & Phoniatirics, Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Kim, Sang-Yoon (The Institute of Logopedics & Phoniatirics, Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Choi, Seung-Ho (The Institute of Logopedics & Phoniatirics, Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Roh, Jong-Lyel (The Institute of Logopedics & Phoniatirics, Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Nam, Soon-Yuhl (The Institute of Logopedics & Phoniatirics, Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine)
  • 박선영 (울산대학교 의과대학 서울아산병원 이비인후과학교실 음성언어의학연구소) ;
  • 김성태 (울산대학교 의과대학 서울아산병원 이비인후과학교실 음성언어의학연구소) ;
  • 김상윤 (울산대학교 의과대학 서울아산병원 이비인후과학교실 음성언어의학연구소) ;
  • 최승호 (울산대학교 의과대학 서울아산병원 이비인후과학교실 음성언어의학연구소) ;
  • 노종렬 (울산대학교 의과대학 서울아산병원 이비인후과학교실 음성언어의학연구소) ;
  • 남순열 (울산대학교 의과대학 서울아산병원 이비인후과학교실 음성언어의학연구소)
  • Published : 2006.12.15
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Abstract

Background and Objeetives : There are few studies reported that specifically examined the voice onset time(VOT) in patients with bilateral vocal nodules. The purpose of this study was to study the characteristics of voice onset in patients with bilateral vocal nodules. Materials and Methods : 52 female patients with bilateral vocal nodules were examined, aged from 20 to 54 years, and were compared with 25 normal female control group. All subjects produced five repetitions of the voiceless stops $/p^h,\;t^h\;k^h/$ in vowel context /ai_a/. VOT was measured by the time between the release of the stops and the onset of voicing. Results : VOTs of the voiceless stops $/p^h/\;and\;/t^h/$ in patients with bilateral vocal nodules were significantly shorter than those of normal subjects. VOT of the $/k^h/$ in them was shorter than those of normals, but the difference was not significant. This results showed that VOTs of the voiceless stops in patients with bilateral vocal nodules were shorter than those of normal subjects. Conclusion : The rapid onset of voicing in patients with bilateral vocal nodules might be associated with increased laryngeal muscle tension by hard glottal attacks. We suggest that VOT can be a clinically useful acoustic parameter for evaluating voice in patients with bilateral vocal nodules.

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