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Updated: Mar 23, 2026
A Method for Tracking the Time Evolution of Steady-State Evoked Potentials
Published on: May 25, 2019
Comparing auditory steady-state responses amplitude evoked by simultaneous air- and bone-conducted stimulation in
Alejandro Torres-Fortuny1, Heivet Hernández-Pérez1,2, Belinda Ramírez3
1a Speech and Hearing Sciences Department . Cuban Neuroscience Centre , La Habana , Cuba .
Objective:
The aim of this study was to evaluate the potential interactions of the simultaneous presentation of air- and bone-conducted stimuli on auditory steady-state responses (ASSR) amplitude in newborns.
Design:
Bone- and air-conducted stimuli were sinusoidal carrier tones of 500 and 2000 Hz respectively modulated in amplitude (95% depth). Air- and bone- conducted stimuli were either simultaneously recorded in the same ear using insert earphones and bone vibrator respectively, or recorded individually (single stimulation).
Study Sample:
Sixty-nine well babies (135 ears) with ages ranging from 1 to 16 days (mean of 9.2 ± 7.9 days) were tested in this study.
Results:
No significant changes in ASSR amplitude by air-conducted stimuli were observed when evoked by simultaneous or single stimulation. The same trend prevailed for ASSR amplitudes evoked by bone-conducted stimuli.
Conclusions:
The results of this study suggest that the simultaneous stimulation of air-and bone-conducted stimuli does not alter ASSR amplitude values in well babies. Therefore, the results support the use of this technique as a potential hearing screening tool to discriminate between conductive and sensorineural hearing loss.
