The Journal of the Acoustical Society of America · 2012 · 12 citations · 3 references
Health ProfessionsAudiologyOtolaryngologyHearing AssessmentHearing ScienceSensory NeuroscienceAuditory Brainstem Response TestingAuditory Brainstem ResponsesAuditory Evoked PotentialsAuditory NeurophysiologyAuditory PhysiologyAuditory SystemAmplitude Response
Recently it has been demonstrated that auditory brainstem responses, ABRs, to chirps are larger with the ER-2 than with the ER-3A insert earphone due to differences between the corresponding amplitude-frequency responses. Therefore a modified chirp, which equalizes the amplitude-frequency response of the ER-3A, is constructed and subsequently compared to the unmodified chirp. ABRs are recorded from 20 normal-hearing subjects in response to the two chirps delivered by the ER-3A earphone at a wide range of levels. The results confirm that the modified chirp generates significantly larger ABRs than the unmodified chirp at levels below 60 dB nHL.
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