Analyzing Auditory Evoked Cortical Response to Noise-suppressed Speech in Cochlear Implant Users Using Mismatch Negativity

Yu, Fang1; Tan, Chin-Tuan2,3; Chen, Fei1

10.1109/NER.2019.8717166

2019

19483554

978-1-5386-7922-7

2019 9TH INTERNATIONAL IEEE/EMBS CONFERENCE ON NEURAL ENGINEERING (NER)

2019-March

365-368

20-23 March 2019

San Francisco, CA, United states

345 E 47TH ST, NEW YORK, NY 10017 USA

IEEE

Speech perception in background noise remains a challenge in cochlear implant (CI) users, and noise-suppression processing (e.g., Wiener filtering) has been commonly utilized to improve speech perception for CI users. It is crucial to objectively examine the perception of the noise-suppressed speech in CI users. The purpose of this work was to investigate whether the mismatch negativity (MMN) response could objectively assess the quality of the noise-suppressed speech as perceived by CI users. A vowel /a/stimulus was masked by a steady-state noise, creating two noisy stimuli at two signal-to-noise ratios (SNRs) of -5 and +5 dB. The two noisy stimuli were processed by Wiener filtering. Electroencephalogram data obtained from 7 CI users who participated in an auditory oddball paradigm was analyzed to extract the MMN. The two noise-suppressed stimuli served as the deviant stimuli and the clean vowel stimulus as the standard stimulus. Experimental results showed that the noise-suppressed stimuli at -5 dB SNR evoked a larger MMN amplitude than that at +5 dB SNR, accounting for the effect of SNR level on the auditory evoked cortical response to the noise-suppressed speech. The MMN may be potentially used as an objective biomarker to evaluate the perception of the noise-suppressed speech in CI users.

Signal to noise ratio Electrodes Speech processing Standards Noise measurement Electroencephalography Cochlear implants

第一 ; 通讯

英语

CPCI-S ; EI

Shenzhen High-level Overseas Talent Program (Peacock Plan)[KQJSCX201803193000018]

Engineering ; Neurosciences & Neurology

Engineering, Biomedical ; Neurosciences

WOS:000469933200091

20192307018329

Brain ; Cochlear implants ; Linguistics ; Speech

Biomedical Engineering:461.1 ; Prosthetics:462.4 ; Information Theory and Signal Processing:716.1 ; Speech:751.5

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen, Peoples R China
2.Univ Texas Dallas, Erik Jonsson Sch Engn & Comp Sci, Dept Elect Engn, Richardson, TX 75083 USA
3.Univ Texas Dallas, Sch Behav & Brain Sci, Richardson, TX 75083 USA

Yu, Fang,Tan, Chin-Tuan,Chen, Fei. Analyzing Auditory Evoked Cortical Response to Noise-suppressed Speech in Cochlear Implant Users Using Mismatch Negativity[C]. 345 E 47TH ST, NEW YORK, NY 10017 USA:IEEE,2019:365-368.