Evaluation of residual hearing in cochlear implants candidates using auditory steady-state response
Evaluation of residual hearing in cochlear implants candidates using auditory steady-state response
Conclusion: The correlations between behavioral and auditory steady-state response (ASSR) thresholds were significant at 500,
1000, 2000, and 4000 Hz. ASSR presented high sensitivity and specificity in the detection of residual hearing in cochlear
implant candidates when compared with warble-tone audiometry. Objectives: To assess residual hearing in cochlear implant
candidates by comparing the electrophysiological thresholds obtained in dichotic single-frequency ASSR with behavioral
thresholds at 500, 1000, 2000, and 4000 Hz. Methods: This was a comparative study between ASSR and warble-tone
audiometry thresholds in 40 cochlear implant candidates (80 ears) before cochlear implantation with bilateral severe-toprofound
sensorineural hearing loss. Results: Thresholds were obtained in 62.5% of all frequencies evaluated in warble-tone
audiometry and in 63.1% in the ASSR. ASSR sensitivity was 96% and specificity was 91.6%. Mean differences between
behavioral and ASSR thresholds did not reach significance at any frequencies. Strong correlations between behavioral and
ASSR thresholds were observed in 500, 1000, and 2000 Hz and moderate in 4000 Hz, with correlation coefficients
Auditory evoked potentials, auditory thresholds, sensorineural hearing loss, residual hearing, cochlear implantation
Conclusion: The correlations between behavioral and auditory steady-state response (ASSR) thresholds were significant at 500,
1000, 2000, and 4000 Hz. ASSR presented high sensitivity and specificity in the detection of residual hearing in cochlear
implant candidates when compared with warble-tone audiometry. Objectives: To assess residual hearing in cochlear implant
candidates by comparing the electrophysiological thresholds obtained in dichotic single-frequency ASSR with behavioral
thresholds at 500, 1000, 2000, and 4000 Hz. Methods: This was a comparative study between ASSR and warble-tone
audiometry thresholds in 40 cochlear implant candidates (80 ears) before cochlear implantation with bilateral severe-toprofound
sensorineural hearing loss. Results: Thresholds were obtained in 62.5% of all frequencies evaluated in warble-tone
audiometry and in 63.1% in the ASSR. ASSR sensitivity was 96% and specificity was 91.6%. Mean differences between
behavioral and ASSR thresholds did not reach significance at any frequencies. Strong correlations between behavioral and
ASSR thresholds were observed in 500, 1000, and 2000 Hz and moderate in 4000 Hz, with correlation coefficients
Auditory evoked potentials, auditory thresholds, sensorineural hearing loss, residual hearing, cochlear implantation