A multidimensional characterization of the neurocognitive architecture underlying age-related temporal speech processing
dc.contributor.author
Elmer, Stefan
dc.contributor.author
Kurthen, Ira
dc.contributor.author
Meyer, Martin
dc.contributor.author
Giroud, Nathalie
dc.date.accessioned
2023-08-30T10:25:26Z
dc.date.available
2023-08-29T05:48:59Z
dc.date.available
2023-08-30T10:25:26Z
dc.date.issued
2023-09
dc.identifier.issn
1053-8119
dc.identifier.issn
1095-9572
dc.identifier.other
10.1016/j.neuroimage.2023.120285
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/628626
dc.identifier.doi
10.3929/ethz-b-000628626
dc.description.abstract
Healthy aging is often associated with speech comprehension difficulties in everyday life situations despite a pure-tone hearing threshold in the normative range. Drawing on this background, we used a multidimensional approach to assess the functional and structural neural correlates underlying age-related temporal speech pro-cessing while controlling for pure-tone hearing acuity. Accordingly, we combined structural magnetic resonance imaging and electroencephalography, and collected behavioral data while younger and older adults completed a phonetic categorization and discrimination task with consonant-vowel syllables varying along a voice-onset time continuum. The behavioral results confirmed age-related temporal speech processing singularities which were reflected in a shift of the boundary of the psychometric categorization function, with older adults perceiving more syllable characterized by a short voice-onset time as /ta/ compared to younger adults. Furthermore, despite the absence of any between-group differences in phonetic discrimination abilities, older adults demonstrated longer N100/P200 latencies as well as increased P200 amplitudes while processing the consonant-vowel sylla-bles varying in voice-onset time. Finally, older adults also exhibited a divergent anatomical gray matter infra-structure in bilateral auditory-related and frontal brain regions, as manifested in reduced cortical thickness and surface area. Notably, in the younger adults but not in the older adult cohort, cortical surface area in these two gross anatomical clusters correlated with the categorization of consonant-vowel syllables characterized by a short voice-onset time, suggesting the existence of a critical gray matter threshold that is crucial for consistent mapping of phonetic categories varying along the temporal dimension. Taken together, our results highlight the multifaceted dimensions of age-related temporal speech processing characteristics, and pave the way toward a better understanding of the relationships between hearing, speech and the brain in older age.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Aging
en_US
dc.subject
Pure-tone hearing loss
en_US
dc.subject
Voice-onset time
en_US
dc.subject
Temporal speech processing
en_US
dc.subject
Phonetic categorization
en_US
dc.subject
Phonetic discrimination
en_US
dc.subject
EEG
en_US
dc.subject
Structural MRI
en_US
dc.title
A multidimensional characterization of the neurocognitive architecture underlying age-related temporal speech processing
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2023-07-20
ethz.journal.title
NeuroImage
ethz.journal.volume
278
en_US
ethz.journal.abbreviated
NeuroImage
ethz.pages.start
120285
en_US
ethz.size
16 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.publication.place
San Diego, CA
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2023-08-29T05:49:04Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2023-08-30T10:25:27Z
ethz.rosetta.lastUpdated
2024-02-03T03:05:14Z
ethz.rosetta.versionExported
true
ethz.COinS
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