Journal article
Difficulties with Speech-in-Noise Perception Related to Fundamental Grouping Processes in Auditory Cortex
Cerebral cortex (New York, N.Y. 1991), Vol.31(3), pp.1582-1596
02/05/2021
DOI: 10.1093/cercor/bhaa311
PMCID: PMC7869094
PMID: 33136138
Abstract
In our everyday lives, we are often required to follow a conversation when background noise is present ("speech-in-noise" [SPIN] perception). SPIN perception varies widely-and people who are worse at SPIN perception are also worse at fundamental auditory grouping, as assessed by figure-ground tasks. Here, we examined the cortical processes that link difficulties with SPIN perception to difficulties with figure-ground perception using functional magnetic resonance imaging. We found strong evidence that the earliest stages of the auditory cortical hierarchy (left core and belt areas) are similarly disinhibited when SPIN and figure-ground tasks are more difficult (i.e., at target-to-masker ratios corresponding to 60% rather than 90% performance)-consistent with increased cortical gain at lower levels of the auditory hierarchy. Overall, our results reveal a common neural substrate for these basic (figure-ground) and naturally relevant (SPIN) tasks-which provides a common computational basis for the link between SPIN perception and fundamental auditory grouping.
Details
- Title: Subtitle
- Difficulties with Speech-in-Noise Perception Related to Fundamental Grouping Processes in Auditory Cortex
- Creators
- Emma Holmes - University College LondonPeter Zeidman - National Hospital for Neurology and NeurosurgeryKarl J. Friston - National Hospital for Neurology and NeurosurgeryTimothy D. Griffiths - Newcastle University
- Resource Type
- Journal article
- Publication Details
- Cerebral cortex (New York, N.Y. 1991), Vol.31(3), pp.1582-1596
- Publisher
- Oxford Univ Press
- DOI
- 10.1093/cercor/bhaa311
- PMID
- 33136138
- PMCID
- PMC7869094
- ISSN
- 1047-3211
- eISSN
- 1460-2199
- Number of pages
- 15
- Grant note
- WT091681MA; 203147/Z/16/Z / Wellcome; Wellcome Trust DC000242-31 / National Institutes of Health; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA
- Language
- English
- Date published
- 02/05/2021
- Academic Unit
- Psychological and Brain Sciences
- Record Identifier
- 9984627349002771
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