Behavioural and neuroanatomical correlates of auditory speech analysis in primary progressive aphasias
Open accessAbstract
BACKGROUND: Non-verbal auditory impairment is increasingly recognised in the primary progressive aphasias (PPAs) but its relationship to speech processing and brain substrates has not been defined. Here we addressed these issues in patients representing the non-fluent variant (nfvPPA) and semantic variant (svPPA) syndromes of PPA. METHODS: We studied 19 patients with PPA in relation to 19 healthy older individuals. We manipulated three key auditory parameters-temporal regularity, phonemic spectral structure and prosodic predictability (an index of fundamental information content, or entropy)-in sequences of spoken syllables. The ability of participants to process these parameters was assessed using two-alternative, forced-choice tasks and neuroanatomical associations of task performance were assessed using voxel-based morphometry of patients' brain magnetic resonance images. RESULTS: Relative to healthy controls, both the nfvPPA and svPPA groups had impaired processing of phonemic spectral structure and signal predictability while the nfvPPA group additionally had impaired processing of temporal regularity in speech signals. Task performance correlated with standard disease severity and neurolinguistic measures. Across the patient cohort, performance on the temporal regularity task was associated with grey matter in the left supplementary motor area and right caudate, performance on the phoneme processing task was associated with grey matter in the left supramarginal gyrus, and performance on the prosodic predictability task was associated with grey matter in the right putamen. CONCLUSIONS: Our findings suggest that PPA syndromes may be underpinned by more generic deficits of auditory signal analysis, with a distributed cortico-subcortical neuraoanatomical substrate extending beyond the canonical language network. This has implications for syndrome classification and biomarker development.
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Novel speech perception paradigms capture syndrome-differential deficits by manipulating temporal and spectral properties of recorded speech.
“Promising avenues for cross-linguistic research also come from novel speech perception paradigms, which capture syndrome-differential deficits by manipu lating temporal and spectral properties of recorded speech. 126-128”
From Speech and language markers of neurodegeneration: a call for global equity (2023) · cites this paper as [126]
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- Authors
- Hardy, C. J. D., Agustus, J. L., Marshall, C. R., Clark, C. N., Russell, L. L., Bond, R. L., Brotherhood, E. V., Thomas, D. L., Crutch, S. J., Rohrer, J. D., & Warren, J. D.
- Affiliations
- UCL Queen Square Institute of Neurology (GB)
- Corresponding author
- Warren, Jason D.
- ORCID
- Venue
- Alzheimer's Research & Therapy
- Published
- 2017-07-27
- Volume
- 9
- Issue
- 1
- Pages
- 53-53
- ISSN
- 1758-9193 (ISSN-L)
- PMC
- PMC5531024
- OpenAlex
- W2740976277
- Cited by
- 34
- References
- 42
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 1 · 2023: 4 · 2022: 7 · 2021: 9 · 2020: 4 · 2019: 2 · 2018: 4
- FWCI
- 1.57
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- Alzheimer s Research & Therapy (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- St George's Online Research Archive (St George's University of London) (acceptedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- UCL Discovery (University College London) (submittedVersion)
- Queen Mary Research Online (Queen Mary University of London) (submittedVersion, cc-by)
- Funders
- Alzheimer's Society (AS-PG-16-007)
- Wellcome Trust (091673/Z/10/Z)
- Medical Research Council (PhD Studentship)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Life Sciences › Neuroscience › Cognitive Neuroscience › Hearing Loss and Rehabilitation
- Keywords
- primary progressive aphasia, non-fluent variant PPA, semantic variant PPA, auditory speech processing, temporal regularity, supplementary motor area, caudate nucleus, supramarginal gyrus, putamen, grey matter, neuroanatomical substrates, disease severity, biomarkers
- MeSH terms
- Acoustic Stimulation, Aged, Aged, 80 and over, Brain, Cognition Disorders, Female, Humans, Magnetic Resonance Imaging, Male, Mental Status Schedule, Middle Aged, Psychoacoustics, Speech, Cohort Studies, Aphasia, Primary Progressive
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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