소아 인공와우이식 환자에서의 전기 자극 복합 활동 전위의 역치와 말소리 지각력과의 관계

김재룡; 신봉식; 정성욱; 우지환; 김리석

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자료유형: 학술저널

저자정보: 김재룡 신봉식 정성욱 우지환 김리석

저널정보: 대한이비인후과학회 대한이비인후-두경부외과학회지 대한이비인후과학회지 두경부외과학 제54권 제10호

발행연도: 2011.1

수록면: 688 - 692 (5page)

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Background and Objectives Neuropathology around the cochlea could create variation from site to site in physiological thresholds of cochlear implant users. This variability would be detrimental to speech recognition with a cochlear implant for a variety of reasons, including distortion of the place code and variation in the number of neurons. The purpose of this study is to examine the relationship between thresholds of electrically evoked compound action potential (ECAP) and speech perception in children implanted with the Nucleus Freedom devices. Subjects and Method Fifty-seven children implanted with the Nucleus Freedom device participated in this study. ECAP thresholds were recorded using the automated neural response telemetry test protocol. We then calculated mean threshold and three metrics to assess across-site variation within subjects: 1) the variance of T levels for all tested sites, 2) the range of T levels (highest minus lowest) across all tested sites and 3) site-to-site variation. For each subject, these measures were compared with performance on tests of word recognition. Results There was considerable across-site (within-subject) and across-subject variability in thresholds. However, we found no significant correlation between speech recognition and across-site variation of thresholds as well as mean threshold levels. Conclusion These data suggest that the ECAP measures of thresholds may not be an accurate predictor of speech perception ability.

#Cochlear implant ㆍElectrically evoked compound action potential ㆍThreshold ㆍSpeech perception.

참고문헌 (23)

참고문헌 신청

Abbas PJ / 1991 / Electrically evoked auditory brainstem response:growth of response with current level / Hear Res 51 (1) : 123 ~ 137

Blamey P / 1996 / Factors affecting auditory performance of postlingually deaf adults using cochlear implants / Audiol Neurootol 1 (5) : 293 ~ 306

Botros A / 2010 / Neural response telemetry reconsidered:I.The relevance of ECAP threshold profiles and scaled profiles to cochlear implant fitting / Ear Hear 31 (3) : 367 ~

Brown CJ / 1995 / Longitudinal assessment of physiological and psychophysical measures in cochlear implant users / Ear Hear 16 (5) : 439 ~ 449

Clay KM / 2007 / Adaptation of the electrically evoked compound action potential(ECAP)recorded from nucleus CI24 cochlear implant users / Ear Hear 28 (6) : 850 ~ 861