Acoustic Reflexes and Auditory Evoked Responses in Hearing Aid Evaluation

The output of compression hearing aids with a transient input signal

“…Use of the click therefore does not allow for accurate assessment of the low frequencies in an aided ABR hearing aid evaluation (Beauchaine And Gorga, 1988). 9 Kileny (1982) temporal, frequency, spectral, polarity, phase, latency and amplitude, (Weber et al, 1981;Hall and Ruth, 1985;and Mahoney, 1985). These changes in the ABR waveform then could change the actual ABR waveforms amplitude, latency and morphology.…”

“…measurement. This point has been raised by a number of authors (Weber et al, 1981;Stecker, 1981;Hall and Ruth, 1985;Mahoney, 1985;and Kileny, 1982).…”

Acoustic Reflexes in Hearing Aid Evaluation

“…[28][29][30][31][32][33][34] Comprehensive reviews on the topic were published by McCandless and Keith 8 and by Hall and Ruth. 6 Tonisson 35 was possibly the first investigator who compared aided and unaided ARTs to determine real ear hearing aid gain. The results for vented and occluded mold fittings revealed considerable deviations of real ear data in relation to 2 cc coupler data.…”

“…With regard to the importance of early amplification in hearing-impaired infants, however, objective fitting procedures should not be neglected. Two main groups of objective methods have been developed and clinically applied in the last decade: 6 those based on auditory-evoked responses, mainly auditory brainstem responses, 7 and those making use of acoustic reflexes (ARs). 8 The advantages and disadvantages of AR application in hearing aid evaluation are discussed in detail elsewhere.…”

“…Despite these drawbacks, stapedial AR application in hearing aid evaluation has clinical value, because the advantages pointed out by Hall and Ruth 6 are dominant. ARs will continue to play an important role in practical hearing aid evaluation until new procedures that are feasible in difficult-to-test patients are proved to be more efficient.…”