Speech perception and cortical auditory evoked potentials in cochlear implant users with auditory neuropathy spectrum disorders
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
07/11/2013
07/11/2013
2012
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Resumo |
Objective: To characterize the PI component of long latency auditory evoked potentials (LLAEPs) in cochlear implant users with auditory neuropathy spectrum disorder (ANSD) and determine firstly whether they correlate with speech perception performance and secondly whether they correlate with other variables related to cochlear implant use. Methods: This study was conducted at the Center for Audiological Research at the University of Sao Paulo. The sample included 14 pediatric (4-11 years of age) cochlear implant users with ANSD, of both sexes, with profound prelingual hearing loss. Patients with hypoplasia or agenesis of the auditory nerve were excluded from the study. LLAEPs produced in response to speech stimuli were recorded using a Smart EP USB Jr. system. The subjects' speech perception was evaluated using tests 5 and 6 of the Glendonald Auditory Screening Procedure (GASP). Results: The P-1 component was detected in 12/14 (85.7%) children with ANSD. Latency of the P-1 component correlated with duration of sensorial hearing deprivation (*p = 0.007, r = 0.7278), but not with duration of cochlear implant use. An analysis of groups assigned according to GASP performance (k-means clustering) revealed that aspects of prior central auditory system development reflected in the P-1 component are related to behavioral auditory skills. Conclusions: In children with ANSD using cochlear implants, the P-1 component can serve as a marker of central auditory cortical development and a predictor of the implanted child's speech perception performance. (c) 2012 Elsevier Ireland Ltd. All rights reserved. |
Identificador |
INTERNATIONAL JOURNAL OF PEDIATRIC OTORHINOLARYNGOLOGY, CLARE, v. 76, n. 9, supl. 1, Part 1, pp. 1332-1338, SEP, 2012 0165-5876 http://www.producao.usp.br/handle/BDPI/42877 10.1016/j.ijpor1.2012.06.001 |
Idioma(s) |
eng |
Publicador |
ELSEVIER IRELAND LTD CLARE |
Relação |
INTERNATIONAL JOURNAL OF PEDIATRIC OTORHINOLARYNGOLOGY |
Direitos |
closedAccess Copyright ELSEVIER IRELAND LTD |
Palavras-Chave | #LONG LATENCY AUDITORY EVOKED POTENTIALS #COCHLEAR IMPLANT #HEARING IMPAIRED #AUDITORY NEUROPATHY SPECTRUM DISORDER #EVENT-RELATED POTENTIALS #NORMAL-CHILDREN #DEVELOPMENTAL-CHANGES #SYSTEM ACTIVITY #MATURATION #RESPONSES #INDIVIDUALS #DEAFNESS #CORTEX #AGE #OTORHINOLARYNGOLOGY #PEDIATRICS |
Tipo |
article original article publishedVersion |