Journal article
EEG Responses to auditory figure-ground perception
Hearing research, Vol.422, 108524
09/01/2022
DOI: 10.1016/j.heares.2022.108524
PMID: 35691269
Abstract
Speech-in-noise difficulty is commonly reported among hearing-impaired individuals. Recent work has established generic behavioural measures of sound segregation and grouping that are related to speech in-noise processing but do not require language. In this study, we assessed potential clinical electroencephalographic (EEG) measures of central auditory grouping (stochastic figure-ground test) and speech in-noise perception (speech-in-babble test) with and without relevant tasks. Auditory targets were presented within background noise (16 talker-babble or randomly generated pure-tones) in 50% of the trials and composed either a figure (pure-tone frequency chords repeating over time) or speech (English names), while the rest of the trials only had background noise. EEG was recorded while participants were presented with the target stimuli (figure or speech) under different attentional states (relevant task or visual-distractor task). EEG time-domain analysis demonstrated enhanced negative responses during detection of both types of auditory targets within the time window 150-350 ms but only figure detection produced significantly enhanced responses under the distracted condition. Further single-channel analysis showed that simple vertex-to-mastoid acquisition defines a very similar response to more complex arrays based on multiple channels. Evoked-potentials to the generic figure-ground task therefore represent a potential clinical measure of grouping relevant to real-world listening that can be assessed irrespective of language knowledge and expertise even without a relevant task.(c) 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ )
Details
- Title: Subtitle
- EEG Responses to auditory figure-ground perception
- Creators
- Xiaoxuan Guo - Newcastle UniversityPradeep Dheerendra - Newcastle UniversityEster Benzaquen - Newcastle UniversityWilliam Sedley - Newcastle UniversityTimothy D. Griffiths - Newcastle University
- Resource Type
- Journal article
- Publication Details
- Hearing research, Vol.422, 108524
- Publisher
- Elsevier
- DOI
- 10.1016/j.heares.2022.108524
- PMID
- 35691269
- ISSN
- 0378-5955
- eISSN
- 1878-5891
- Number of pages
- 7
- Grant note
- P50 DC000242 / NIH; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA MR/T032553/1 / MRC; UK Research & Innovation (UKRI); Medical Research Council UK (MRC) WT106964MA / Wellcome Trust
- Language
- English
- Date published
- 09/01/2022
- Academic Unit
- Psychological and Brain Sciences
- Record Identifier
- 9984627237902771
Metrics
7 Record Views