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Modelling human auditory evoked brainstem responses to speech syllables
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Roenne, Filip M., Harte, James M. and Dau3, Torsten (2013) Modelling human auditory evoked brainstem responses to speech syllables. In: ICA 2013 , Montreal, Canada, 2-7 Jun 2013. Published in: Meetings on Acoustics. Proceedings, Volume 19 (Number 1). 050120 . doi:10.1121/1.4799225 ISSN 1939-800X.
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Official URL: http://dx.doi.org/10.1121/1.4800364
Abstract
Auditory evoked brainstem responses (ABR) are routinely used to assess the neural encoding of sound. Various types of stimuli have been historically considered, and there is a current increasing trend towards the use of syllables, speech and complex (non-speech) sounds. Despite the peripheral origin of ABRs, the nonlinear processing within the cochlea and brainstem makes interpreting responses to these new stimuli a challenge. A recent model was developed (Ro/nne et al., 2012) to simulate ABRs to transient sounds such as tone pulses, clicks and rising chirps as a function of stimulus level. The present study extends this model to simulate synthetic /ba/, /da/ and /ga/ syllable-evoked ABRs, where the stimuli only differ in their spectral energy of the second formant, f2, within their first 60 ms. The model takes the convolution of the instantaneous discharge rates using a "humanized" nonlinear auditory-nerve model of Zilany et al. (2009) and an empirically derived unitary response function, assumed to reflect contributions from different cell populations within the auditory brainstem. The ABR model was used to explore the physiological basis and spectro-temporal characteristics of key features observed in syllable-evoked ABRs in the literature (Skoe et al., 2011; Hornickel et al., 2009).
Item Type: | Conference Item (Paper) | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | Meetings on Acoustics. Proceedings | ||||
Publisher: | Acoustical Society of America | ||||
ISSN: | 1939-800X | ||||
Official Date: | June 2013 | ||||
Dates: |
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Volume: | Volume 19 | ||||
Number: | Number 1 | ||||
Page Range: | 050120 | ||||
DOI: | 10.1121/1.4799225 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | ICA 2013 | ||||
Type of Event: | Conference | ||||
Location of Event: | Montreal, Canada | ||||
Date(s) of Event: | 2-7 Jun 2013 |
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