이 연구의 목적은 수술 전부터 수술 후 1년 사이의 발성수행력의 변화를 연구하기 위한 것이다. 대상자는 양측 고도난청이상의 청력으로 인공와우 이식수술을 받은 환자로 언어이전 3명, 언어이후 7명, 총 10명을 대상으로 하였다. 대상자의 평균 나이는 33.8세로 청력 손실기간은 1-23년이었다. 발성수행력의 변화를 살펴보기 위해 CSL4500의 VRP와 헤드셋마이크를 이용하여 첫째, 강도특성(I-L, I-H, I-R)과 음도특성(F0-L, F0-H, F0-R, ST-M, ST-F, ST-R)의 변화를 살펴보았고 둘째, 이식후기간과 청력손실시기에 따른 변화의 차이를 살펴보았다. 연구의 결과는 다음과 같다. 첫째, 이식 후 1년 동안 음도특성의 변화는 F0-L, F0-R, ST-M에서 강도특성의 변화는 I-L, I-R에서 유의미한 차이를 보였다. 둘째, 청력손실기간에 따른 변화는 F0-RP0P6, ST-MP0P6, ST-RP0P6, I-LP6P12, I-RP6P12, F0-HP0P12, F0-RP0P12, ST-MP0P12, ST-RP0P12에서 유의미한 차이를 보였다. 셋째, 청력손실시기에 따른 변화는 ST-MP0P12, ST-RP0P12에서 유의미한 차이를 보였다.
The purpose of this study was to investigate the change of vocal performance between pre- and post-op cochlear implantation. The subjects were 10 patients who were diagnosed by a otolaryngologist. All subjects had underwent cochlear implantation. Ages ranged from 15 to 46, with an average of 33.8. Hearing loss period ranged from one to 23 years according to language acquisition time of pre-language and post-language. Change of vocal performance was measured with a VRP CSL4500 System. Recording was done using a headset microphone. The results of this study were as follows. First, for pitch change characteristics according to period of CI, there was significant differences in F0-L, ST-M, and ST-R. Second, for change of SPL characteristic, there was significant differences in I-L and I-R. Third, for change of VRP characteristics according to period of hearing loss, there was significant differences in F0-RP0P6, ST-MP0P6, ST-RP6P12, I-LP6P12, I-RP6P12, F0-RP0P12, ST-MP0P12, ST-RP0P12, ST-MP0P12, and ST-RP0P12. Fourth, for change of VRP characteristic according to timing of hearing loss, there were significant differences between pre-language and post-language in ST-M and ST-R. In addition, there were significant differences in I-L. In conclusion, VRP shows apparent aspects of vocal performance. This study provides basic material useful in CI study, suggesting guidelines for voice treatment using VRP.