EEG Phase Synchrony Reflects SNR Levels During Continuous Speech-in-Noise Tasks

Comprehension of speech in noise is a challenge for hearing-impaired (HI) individuals. Electroencephalography (EEG) provides a tool to investigate the effect of different levels of signal-to-noise ratio (SNR) of the speech. Most studies with EEG have focused on spectral power in well-defined frequency bands such as alpha band. In this study, we investigate how local functional connectivity, i.e. functional connectivity within a localized region of the brain, is affected by two levels of SNR. Twenty-two HI participants performed a continuous speech in noise task at two different SNRs (+3 dB and +8 dB). The local connectivity within eight regions of interest was computed by using a multivariate phase synchrony measure on EEG data. The results showed that phase synchrony increased in the parietal and frontal area as a response to increasing SNR. We contend that local connectivity measures can be used to discriminate between speech-evoked EEG responses at different SNRs.

Graversen, CarinaEriksholm Res Ctr, Denmark (författare)
Alickovic, EminaLinköpings universitet,Reglerteknik,Tekniska fakulteten,Eriksholm Res Ctr, Denmark(Swepub:liu)emial07 (författare)
Ostergaard, JanAalborg Univ, Denmark (författare)
Aalborg Univ, DenmarkEriksholm Res Ctr, Denmark (creator_code:org_t)

Ingår i:2021 43RD ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY (EMBC): IEEE, s. 531-5349781728111797

Av författaren/redakt...: Baboukani, Payam ...; Graversen, Carin ...; Alickovic, Emina; Ostergaard, Jan

Om ämnet

MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Klinisk medicin; och Oto rhino laryng ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.