Audiological use of the 40 Hz-ASSR (auditory steady state responses) could be valuable for objectivelyestimating the frequency-specific threshold in adults undergoing an expertise examination for medicolegal and/or co...Audiological use of the 40 Hz-ASSR (auditory steady state responses) could be valuable for objectivelyestimating the frequency-specific threshold in adults undergoing an expertise examination for medicolegal and/or compensation purposes. The present prospective study was set up to clarify the relationship between the thresholds obtained by cortical evoked response audiometry (CERA) and by 40 HzASSR, in the same ears, within a large homogeneous sample of 164 subjects (328 ears) with NIHL andwell documented exposure to noise. All these subjects claimed financial compensation for occupationalNIHL, and there was a suspicion of exaggeration of the reported NIHLs. ASSR thresholds show a goodcorrelation with the CERA thresholds. However, a systematic shift is noticed, ASSR thresholds being onaverage (1e2 e 3 kHz) 4.38 dB lower (i.e. showing less hearing loss) than CERA thresholds. Moreover, thebinaural multiple ASSR technique allows a considerable time gain when compared to the CERA.展开更多
Objective: To define difference scores between PTA, ASSR and CERA thresholds in subjects with occupational NIHL.Design: 44 subjects undergoing a medico-legal expert assessment for occupational NIHL and fulfillingcrite...Objective: To define difference scores between PTA, ASSR and CERA thresholds in subjects with occupational NIHL.Design: 44 subjects undergoing a medico-legal expert assessment for occupational NIHL and fulfillingcriteria of reliability were considered. Assessment included: PTA, 40 Hz binaural multiple ASSR and CERA(1-2-3 kHz).Results: The respective average difference scores (ASSR - PTA) for 1, 2 and 3 kHz are 13.01 (SD 10.19) dB,12.72 (SD 8.81) dB and 10.38 (SD 8.19) dB. The average (CERA - ASSR) difference scores are 1.25 (SD 14.63)dB for 1 kHz (NS), 2.73 (SD 13.03) dB for 2 kHz (NS) and 4.51 (SD 12.18) dB for 3 kHz. The correlationbetween PTA and ASSR (0.82) is significantly stronger than that between PTA and CERA (0.71). In a givensubject, PTA thresholds are nearly always lower (i.e., better) than ASSR thresholds, whatever the frequency (1-2-3 kHz) and the side (right e left). A significant negative correlation is found between thedifference score (ASSR e PTA) and the degree of hearing loss.Conclusion: ASSR outperforms CERA in a medicolegal context, although overestimating the behavioralthresholds by 10e13 dB.展开更多
文摘Audiological use of the 40 Hz-ASSR (auditory steady state responses) could be valuable for objectivelyestimating the frequency-specific threshold in adults undergoing an expertise examination for medicolegal and/or compensation purposes. The present prospective study was set up to clarify the relationship between the thresholds obtained by cortical evoked response audiometry (CERA) and by 40 HzASSR, in the same ears, within a large homogeneous sample of 164 subjects (328 ears) with NIHL andwell documented exposure to noise. All these subjects claimed financial compensation for occupationalNIHL, and there was a suspicion of exaggeration of the reported NIHLs. ASSR thresholds show a goodcorrelation with the CERA thresholds. However, a systematic shift is noticed, ASSR thresholds being onaverage (1e2 e 3 kHz) 4.38 dB lower (i.e. showing less hearing loss) than CERA thresholds. Moreover, thebinaural multiple ASSR technique allows a considerable time gain when compared to the CERA.
文摘Objective: To define difference scores between PTA, ASSR and CERA thresholds in subjects with occupational NIHL.Design: 44 subjects undergoing a medico-legal expert assessment for occupational NIHL and fulfillingcriteria of reliability were considered. Assessment included: PTA, 40 Hz binaural multiple ASSR and CERA(1-2-3 kHz).Results: The respective average difference scores (ASSR - PTA) for 1, 2 and 3 kHz are 13.01 (SD 10.19) dB,12.72 (SD 8.81) dB and 10.38 (SD 8.19) dB. The average (CERA - ASSR) difference scores are 1.25 (SD 14.63)dB for 1 kHz (NS), 2.73 (SD 13.03) dB for 2 kHz (NS) and 4.51 (SD 12.18) dB for 3 kHz. The correlationbetween PTA and ASSR (0.82) is significantly stronger than that between PTA and CERA (0.71). In a givensubject, PTA thresholds are nearly always lower (i.e., better) than ASSR thresholds, whatever the frequency (1-2-3 kHz) and the side (right e left). A significant negative correlation is found between thedifference score (ASSR e PTA) and the degree of hearing loss.Conclusion: ASSR outperforms CERA in a medicolegal context, although overestimating the behavioralthresholds by 10e13 dB.
