The Analysis of Electroglottographic Measures from Lx Speech Studio Program in Patients with Vocal Nodules

Lx Speech Studio를 이용한 성대결절환자의 전기성문파형 측정치 분석

  • 이성은 (연세대학교 의과대학 이비인후과학교실, 음성언어의학연구소) ;
  • 임성은 (연세대학교 의과대학 이비인후과학교실, 음성언어의학연구소) ;
  • 최성희 (연세대학교 의과대학 이비인후과학교실, 음성언어의학연구소) ;
  • 표화영 (연세대학교 의과대학 이비인후과학교실, 음성언어의학연구소) ;
  • 최재남 (연세대학교 의과대학 이비인후과학교실, 음성언어의학연구소) ;
  • 최홍식 (연세대학교 의과대학 이비인후과학교실, 음성언어의학연구소)
  • Published : 2003.11.01


The purpose of this study is to analyze the EGG measures from Lx Speech Studio program (Laryngograph Ltd, UK) in patient with vocal nodule. Thirty female adults (15 patient with vocal nodule, 15 normal speaker) produced sustained vowel and read the passage. They were grouped into three groups based on Grade (GRBAS) : normal-G0, nodule-Gl, nodule-G2. Estimates of Fx (Hz), Qx(%), Jitter, Shimmer, and HNR were made from a 500msec midportion of vowel. In addition, DFx(Hz), DQx(%), CFx(%) and CAx(%) were obtained from reading the passage. These data were compared among groups. The results were as follow Jitter, Shimmer, HNR were significantly higher in nodule-G2 group than in normal-G0 & patient-Gl group. In nodule-G2 group, CFx and CAx from reading passage were significantly higher. For patients with nodule, asymmetry or irregularity were observed in graphs of QxFx & CFx provided by Quantitative Analysis.