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Updated: Mar 15, 2026
Data Acquisition and Analysis In Brainstem Evoked Response Audiometry In Mice
Published on: May 10, 2019
Signal type and signal-to-noise ratio interact to affect cortical auditory evoked potentials
Curtis J Billings1, Leslie D Grush1
1National Center for Rehabilitative Auditory Research, Veterans Affairs Portland Health Care System, Portland, Oregon 97239, USA Curtis.Billings2@va.gov, Leslie.Grush@va.gov.
Abstract:
Use of speech signals and background noise is emerging in cortical auditory evoked potential (CAEP) studies; however, the interaction between signal type and noise level remains unclear. Two experiments determined the interaction between signal type and signal-to-noise ratio (SNR) on CAEPs. Three signals (syllable /ba/, 1000-Hz tone, and the /ba/ envelope with 1000-Hz fine structure) with varying SNRs were used in two experiments, demonstrating signal-by-SNR interactions due to both envelope and spectral characteristics. When using real-world stimuli such as speech to evoke CAEPs, temporal and spectral complexity leads to differences with traditional tonal stimuli, especially when presented in background noise.
