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Speech intelligibility predicted from neural entrainment of the speech envelope

View ORCID ProfileJonas Vanthornhout, View ORCID ProfileLien Decruy, View ORCID ProfileJan Wouters, View ORCID ProfileJonathan Z. Simon, View ORCID ProfileTom Francart
doi: https://doi.org/10.1101/246660
Jonas Vanthornhout
1KU Leuven - University of Leuven, Department of Neurosciences, ExpORL
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Lien Decruy
1KU Leuven - University of Leuven, Department of Neurosciences, ExpORL
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Jan Wouters
1KU Leuven - University of Leuven, Department of Neurosciences, ExpORL
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Jonathan Z. Simon
2Department of Electrical and Computer Engineering, University of Maryland, College Park, USA; Department of Biology, University of Maryland, College Park, USA; Institute for Systems Research, University of Maryland, College Park, USA
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Tom Francart
1KU Leuven - University of Leuven, Department of Neurosciences, ExpORL
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Abstract

Speech intelligibility is currently measured by scoring how well a person can identify a speech signal. The results of such behavioral measures reflect neural processing of the speech signal, but are also influenced by language processing, motivation and memory. Very often electrophysiological measures of hearing give insight in the neural processing of sound. However, in most methods non-speech stimuli are used, making it hard to relate the results to behavioral measures of speech intelligibility. The use of natural running speech as a stimulus in electrophysiological measures of hearing is a paradigm shift which allows to bridge the gap between behavioral and electrophysiological measures. Here, by decoding the speech envelope from the electroencephalogram, and correlating it with the stimulus envelope, we demonstrate an electrophysiological measure of neural processing of running speech. We show that behaviorally measured speech intelligibility is strongly correlated with our electrophysiological measure. Our results pave the way towards an objective and automatic way of assessing neural processing of speech presented through auditory prostheses, reducing confounds such as attention and cognitive capabilities. We anticipate that our electrophysiological measure will allow better differential diagnosis of the auditory system, and will allow the development of closed-loop auditory prostheses that automatically adapt to individual users.

Footnotes

  • * Financial support was provided by the KU Leuven Special Research Fund under grant OT/14/119 to Tom Francart. Research funded by a PhD grant of the Research Foundation Flanders (FWO). This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 637424), from the YouReCa Junior Mobility Programme under grant JUMO/15/034 to Jonas Vanthornhout, from NIH grant R01-DC-014085 to Jonathan Z. Simon and from FWO project grant G.0662.13. The authors declare that they have no conflict of interest.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted January 12, 2018.
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Speech intelligibility predicted from neural entrainment of the speech envelope
Jonas Vanthornhout, Lien Decruy, Jan Wouters, Jonathan Z. Simon, Tom Francart
bioRxiv 246660; doi: https://doi.org/10.1101/246660
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Speech intelligibility predicted from neural entrainment of the speech envelope
Jonas Vanthornhout, Lien Decruy, Jan Wouters, Jonathan Z. Simon, Tom Francart
bioRxiv 246660; doi: https://doi.org/10.1101/246660

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