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Alpha Oscillations ...
Alpha Oscillations During Effortful Continuous Speech: From Scalp EEG to Ear-EEG
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- Ala, Tirdad Seifi (författare)
- Oticon AS, Denmark; Univ Nottingham, England
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- Alickovic, Emina (författare)
- Linköpings universitet,Reglerteknik,Tekniska fakulteten,Oticon AS, Denmark
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- Cabrera, Alvaro Fuentes (författare)
- T&W Engn AS, Denmark
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- Whitmer, William M. M. (författare)
- Univ Nottingham, England
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- Hadley, Lauren V. V. (författare)
- Univ Nottingham, England
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- Rank, Mike L. L. (författare)
- T&W Engn AS, Denmark
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- Lunner, Thomas (författare)
- Oticon AS, Denmark
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- Graversen, Carina (författare)
- Oticon AS, Denmark
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(creator_code:org_t)
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2023
- 2023
- Engelska.
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Ingår i: IEEE Transactions on Biomedical Engineering. - : IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. - 0018-9294 .- 1558-2531. ; 70:4, s. 1264-1273
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Objective: The purpose of this study was to investigate alpha power as an objective measure of effortful listening in continuous speech with scalp and ear-EEG. Methods: Scalp and ear-EEG were recorded simultaneously during presentation of a 33-s news clip in the presence of 16-talker babble noise. Four different signal-to-noise ratios (SNRs) were used to manipulate task demand. The effects of changes in SNR were investigated on alpha event-related synchronization (ERS) and desynchronization (ERD). Alpha activity was extracted from scalp EEG using different referencing methods (common average and symmetrical bi-polar) in different regions of the brain (parietal and temporal) and ear-EEG. Results: Alpha ERS decreased with decreasing SNR (i.e., increasing task demand) in both scalp and ear-EEG. Alpha ERS was also positively correlated to behavioural performance which was based on the questions regarding the contents of the speech. Conclusion: Alpha ERS/ERD is better suited to track performance of a continuous speech than listening effort. Significance: EEG alpha power in continuous speech may indicate of how well the speech was perceived and it can be measured with both scalp and Ear-EEG.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- Electroencephalography; Electrodes; Scalp; Task analysis; Signal to noise ratio; Loudspeakers; Power measurement; Alpha power; EEG; ear-EEG; Listening Effort
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