Author/Editor     Hočevar-Boltežar, Irena; Radšel, Zora; Vatovec, Jagoda; Geczy, Branka; Černelc, Smilja; Gros, Anton; Zupančič, Janez; Battelino, Saba; Lavrenčak, Boštjan; Žargi, Miha
Title     Change of phonation control after cochlear implantation
Type     članek
Source     Otology & Neurotology
Vol. and No.     Letnik 27, št. 4
Publication year     2006
Volume     str. 499-503
Language     eng
Abstract     Objective: To assess the influence of acquired auditory control on some voice parameters in deaf children and adults after cochlear implantation. Study Design: Prospective clinical study. Setting: Tertiary referral center. Patients: Twenty-nine prelingually deafened children and 11 postlingually deafened adults. Interventions: The samples of a vowel /a/ were analyzed with a Multi-Dimensional Voice Program (Kay Elemetrics Corporation, Lincoln Park, NJ) before and 6 to 12 months after the cochlear implantation. Main Outcome Measures: The average fundamental frequency (F0), the short-term variation of FO (JIT) and the amplitude (SH), the very long-term variation of FO (vF0) and the amplitude (vAm), and the noise-to-harmonic ratio (NHR) were determined and compared for both age groups. The results of the acoustic analysis performed before the implantation were compared with the results after the implantation for children and adults. Results: Significantly greater JIT, SH, vF0, and vAm were detected in the children than in the adults before and after the implantation. The prelingually deafened children significantly improved the control of their phonation after 6 to 12 months' use of the cochlear implant (JIT: p = 0.014, SH: p = 0.011, vF0: p = 0.014, vAm: p = 0.031). In the postlingually deafened adults, no significant improvement was found in any of the studied voice parameters after the implantation. FO showed little or no change after the implantation in children and adults. (Abstract truncated at 2000 characters)
Descriptors     DEAFNESS
COCHLEAR IMPLANT
VOICE QUALITY
SPEECH ARTICULATION TESTS