title: Vocal and laryngeal modifications produced by the sonorous tongue vibration technique.
abstract: BACKGROUND
  effectiveness of the sonorous tongue vibration technique (STVT).
  
  
  OBJECTIVE
  to investigate the sensations and the vocal and laryngeal impact produced by the sonorous tongue vibration technique.
  
  
  METHODS
  The STVT was performed in three sets of fifteen repetitions, in maximum phonatory duration using a normal tone and intensity - with 30 seconds intervals of passive rest between each set. Twenty-four women aged between 20 and 30 years and with no vocal complaints participated in the study. All participants were submitted to a larynx evaluation through videolaryngostroboscopy examination; auditory perceptual and acoustic analysis of the voice, before and after using the STVT, by means of the Multi-Dimensional Voice Program (MDVP), Model 5105 and Real Time Spectrogram, from Key Elemetrics.
  
  
  RESULTS
  after using the STVT, a statistically significant difference was observed in terms of: improvement of voice type; focus of vertical resonance; vocal quality; predominance of positive sensations; maintenance of the larynx images parameters (glottis closure, laryngeal vestibule constriction, symmetry and amplitude of vocal folds vibration); increase in fundamental frequency; improvement of spectrographic evaluation parameters, in Broadband and Narrowband filters; and improvement of medial vestibule constriction according to increase in STVT duration.
  
  
  CONCLUSIONS
  the STVT modifies the glottal source and the resonant filter.
authors.affiliation: Universidade Federal do Rio Grande do Sul. fonoka@hotmail.com
authors.forename: Karine
authors.initials: K
authors.lastname: Schwarz
authors.forename: Carla Aparecida
authors.initials: CA
authors.lastname: Cielo
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007830:Larynx / Q000502:physiology*; D014732:Vibration; D014827:Vocal Cords / Q000502:physiology; D014831:Voice / Q000502:physiology*; D014833:Voice Quality; D014834:Voice Training; D055815:Young Adult