Cited by 47Neurobiology of Language and BilingualismDementia and Cognitive Impairment ResearchNeuroscience and Music Perception

Functional neuroanatomy of speech signal decoding in primary progressive aphasias

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Hardy, Chris J.D., Agustus, Jennifer L., Marshall, Charles R., Clark, Camilla N., Russell, Lucy L., Brotherhood, Emilie V., Bond, Rebecca L., Fiford, Cassidy M. +5 more·2017·Neurobiology of Aging

Abstract

The pathophysiology of primary progressive aphasias remains poorly understood. Here, we addressed this issue using activation fMRI in a cohort of 27 patients with primary progressive aphasia (nonfluent, semantic, and logopenic variants) versus 15 healthy controls. Participants listened passively to sequences of spoken syllables in which we manipulated 3-key auditory speech signal characteristics: temporal regularity, phonemic spectral structure, and pitch sequence entropy. Relative to healthy controls, nonfluent variant patients showed reduced activation of medial Heschl's gyrus in response to any auditory stimulation and reduced activation of anterior cingulate to temporal irregularity. Semantic variant patients had relatively reduced activation of caudate and anterior cingulate in response to increased entropy. Logopenic variant patients showed reduced activation of posterior superior temporal cortex to phonemic spectral structure. Taken together, our findings suggest that impaired processing of core speech signal attributes may drive particular progressive aphasia syndromes and could index a generic physiological mechanism of reduced computational efficiency relevant to all these syndromes, with implications for development of new biomarkers and therapeutic interventions.

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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”

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  1. Blesser B. Speech perception under conditions of spectral transformation J. Speech Lang. Hear Res. 15 1972 5 41 5012812
  2. Jenkinson M. Beckmann C.F. Behrens T.E. Woolrich M.W. Smith S.M. FSL Neuroimage 62 2012 782 790 21979382

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Authors
Hardy, C. J. D., Agustus, J. L., Marshall, C. R., Clark, C. N., Russell, L. L., Brotherhood, E. V., Bond, R. L., Fiford, C. M., Ondobaka, S., Thomas, D. L., Crutch, S. J., Rohrer, J. D., & Warren, J. D.
Affiliations
  • UCL Queen Square Institute of Neurology (GB)
  • Wellcome Centre for Human Neuroimaging (GB)
Corresponding author
Warren, Jason D.
Venue
Neurobiology of Aging
Publisher
Elsevier BV
Published
2017-08
Volume
56
Pages
190-201
ISSN
0197-4580 (ISSN-L)
OpenAlex
W2612092148
Cited by
47
References
91
Citations by year
2026: 3 · 2025: 3 · 2024: 7 · 2023: 7 · 2022: 5 · 2021: 6 · 2020: 5 · 2019: 5 · 2018: 5 · 2017: 1
FWCI
2.51
Type
journal article
Language
en
Open access
Locations
  • Neurobiology of Aging (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • St George's Online Research Archive (St George's University of London) (acceptedVersion)
  • Queen Mary Research Online (Queen Mary University of London) (submittedVersion, cc-by)
Funders
  • Alzheimer's Research UK
  • Brain Research Trust
  • The Wolfson Foundation
  • Alzheimer's Society (AS-PG-16-007)
  • National Institute for Health Research University College London Hospitals Biomedical Research Centre (CBRC 161)
  • UCL Leonard Wolfson Experimental Neurology Centre (PR/ylr/18575)
  • Economic and Social Research Council (ES/K006711/1)
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 › Neuroscience and Music Perception
Keywords
primary progressive aphasia, auditory processing, semantic variant, logopenic variant, anterior cingulate cortex, caudate nucleus, posterior superior temporal cortex, temporal regularity, computational efficiency, biomarkers
MeSH terms
Acoustic Stimulation, Aged, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Semantics, Speech, Temporal Lobe, Cohort Studies, Aphasia, Primary Progressive, Frontotemporal Dementia

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