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  Temporal sensitivity measured shortly after cochlear implantation predicts 6-month speech recognition outcome

Erb, J., Ludwig, A. A., Kunke, D., Fuchs, M., & Obleser, J. (2019). Temporal sensitivity measured shortly after cochlear implantation predicts 6-month speech recognition outcome. Ear and Hearing, 40(1), 27-33. doi:10.1097/AUD.0000000000000588.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-B9BE-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-9054-B
Genre: Journal Article

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 Creators:
Erb, Julia1, 2, 3, Author              
Ludwig, Alexandra Annemarie 4, 5, Author
Kunke, Dunja1, Author
Fuchs, Michael 4, 6, Author
Obleser, Jonas1, 3, Author              
Affiliations:
1Max Planck Research Group Auditory Cognition, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_751545              
2Department of Cognitive Neuroscience, Maastricht University, the Netherlands, ou_persistent22              
3Department of Psychology, University of Lübeck, Germany, ou_persistent22              
4Department of Otorhinolaryngology, University of Leipzig, Germany, ou_persistent22              
5Faculty of Biosciences, Pharmacy and Psychology, University of Leipzig, Germany, ou_persistent22              
6Cochlea Implant Center Leipzig, Germany, ou_persistent22              

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 Abstract: OBJECTIVES: Psychoacoustic tests assessed shortly after cochlear implantation are useful predictors of the rehabilitative speech outcome. While largely independent, both spectral and temporal resolution tests are important to provide an accurate prediction of speech recognition. However, rapid tests of temporal sensitivity are currently lacking. Here, we propose a simple amplitude modulation rate discrimination (AMRD) paradigm that is validated by predicting future speech recognition in adult cochlear implant (CI) patients. DESIGN: In 34 newly implanted patients, we used an adaptive AMRD paradigm, where broadband noise was modulated at the speech-relevant rate of ~4 Hz. In a longitudinal study, speech recognition in quiet was assessed using the closed-set Freiburger number test shortly after cochlear implantation (t0) as well as the open-set Freiburger monosyllabic word test 6 months later (t6). RESULTS: Both AMRD thresholds at t0 (r = -0.51) and speech recognition scores at t0 (r = 0.56) predicted speech recognition scores at t6. However, AMRD and speech recognition at t0 were uncorrelated, suggesting that those measures capture partially distinct perceptual abilities. A multiple regression model predicting 6-month speech recognition outcome with deafness duration and speech recognition at t0 improved from adjusted R = 0.30 to adjusted R = 0.44 when AMRD threshold was added as a predictor. CONCLUSIONS: These findings identify AMRD thresholds as a reliable, nonredundant predictor above and beyond established speech tests for CI outcome. This AMRD test could potentially be developed into a rapid clinical temporal-resolution test to be integrated into the postoperative test battery to improve the reliability of speech outcome prognosis.

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Language(s): eng - English
 Dates: 2019-01-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1097/AUD.0000000000000588
PMID: 29697465
 Degree: -

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Funding program : Max Planck Research Group Grant
Funding organization : Max Planck Society

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Title: Ear and Hearing
Source Genre: Journal
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Publ. Info: Philadelphia : Lippincott Williams & Wilkins
Pages: - Volume / Issue: 40 (1) Sequence Number: - Start / End Page: 27 - 33 Identifier: ISSN: 1538-4667
CoNE: https://pure.mpg.de/cone/journals/resource/1538-4667