CC BY-NC-ND 4.0 · Int Arch Otorhinolaryngol 2020; 24(02): e132-e139
DOI: 10.1055/s-0039-1695022
Original Research
Thieme Revinter Publicações Ltda Rio de Janeiro, Brazil

Behavioral and Electrophysiological Assessment of Adults Who Underwent Cochlear Implantation After Hearing Aid Experience[*]

1   Department of Ophthalmology, Otolaryngology and Head and Neck Surgery/Speech-Language Pathology and Audiology Division, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
Maria Stella Arantes do Amaral
2   Hospital das Clínicas, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
Benedita Aparecida Borges da Luz
2   Hospital das Clínicas, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
Sarah Carolina Bernal
1   Department of Ophthalmology, Otolaryngology and Head and Neck Surgery/Speech-Language Pathology and Audiology Division, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
Miguel Ângelo Hyppolito
3   Department of Ophthalmology, Otolaryngology and Head and Neck Surgery, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
Ana Claudia Mirândola Barbosa Reis
1   Department of Ophthalmology, Otolaryngology and Head and Neck Surgery/Speech-Language Pathology and Audiology Division, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
› Author Affiliations
Further Information

Publication History

17 February 2019

20 June 2019

Publication Date:
04 November 2019 (online)


Introduction Cochlear implantation has been considered a viable option to restore hearing perception in adults with severe to profound postlingual hearing loss.

Objectives To analyze behavioral hearing responses and P300 latency and amplitude measurements in adults with bilateral sensorineural hearing loss at two phases, first when they were using hearing aids (HAs) and, then, after 12 months of cochlear implant (CI) use. The association between behavioral and electrophysiological evaluations was explored, as it is believed that the study of auditory processing with different hearing devices can contribute to future CI adjustments and fittings, especially for patients who cannot give subjective feedback (such as small children and individuals with multiple disabilities).

Methods Prospective comparative study (Ethical approval 11489/2014). Twelve adults were assessed, 7 males and 5 females, in the 22 to 76 years old age range, who had undergone CI surgery after HA experience.

Results The analyses showed an improvement of hearing thresholds when patients started using CIs. Comparing data from P300 latency measurements, there was an increase of the P300 wave post-CI at Cz and Fz. Regarding the amplitude, P300 mean values decreased at Cz, but increased at Fz. There was no significant correlation between behavioral and electrophysiological assessment and the variables age, gender, auditory deprivation, and electronic device used.

Conclusion There was a significant improvement of hearing thresholds after twelve months of CI experience. The mean latency values of P300 after 12 months of CI use increased at Cz and Fz, while mean amplitude values decreased at Cz and increased at Fz.

* This paper was presented in: 31° Encontro Internacional de Audiologia - São Paulo, SP, Brasil.

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