ArticleNeurology2022
Automated Detection of Speech Timing Alterations in Autopsy-Confirmed Nonfluent/Agrammatic Variant Primary Progressive Aphasia.
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30 citing papers in PubMed, 37 citations in OpenAlex.
- Neurofilament light chain and voice acoustics in dementia diagnosis (NAVAIDD): Protocol for a cohort study assessing the real-world diagnostic utility of blood and digital biomarkers in clinical settings.Journal of Alzheimer's disease reportsTrial
- Semantic memory navigation in mild cognitive impairment: Automated markers with neural and biofluid correlates.NeuroImage · 2026Article
- Deep learning-derived measures of sound-level accuracy in primary progressive apraxia of speech: A feasibility pipeline with descriptive evidence from two cases.Clinical linguistics & phonetics · 2026Article
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- The include network: Advancing cross-linguistic equity in brain health research.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Article
- Unifying Divergent Conceptions in Nonfluent/Agrammatic and Semantic Primary Progressive Aphasia.Brain sciences · 2026Review
- Digital language measures capture episodic memory disruptions in people with human immunodeficiency virus: A machine learning study.The Clinical neuropsychologist · 2026Article
- The landscape of dementia research, diagnosis, treatment, and care in Latin America.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Review
- Review of Artificial Intelligence for Clinical Use in Alzheimer's Disease and Related Dementias.Seminars in neurology · 2026Review
- Speech and language outcome measures in clinical trials of Alzheimer's and Parkinson's diseases.Expert review of neurotherapeutics · 2026Review
- Artificial intelligence-based speech error detection to differentiate primary progressive aphasia variants.Brain communications · 2026Article
- MULTI-OBJECT DATA INTEGRATION IN THE STUDY OF PRIMARY PROGRESSIVE APHASIA.The annals of applied statistics · 2025Article
- Automated Speech Analysis to Differentiate Frontal and Right Anterior Temporal Lobe Atrophy in Frontotemporal Dementia.Neurology · 2025Article
- Developing digital health technologies for frontotemporal degeneration.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025Review
- Investigating changes in connected speech in nonfluent/agrammatic primary progressive aphasia following script training.Cortex; a journal devoted to the study of the nervous system and behavior · 2025Article
- The use of low-density EEG for the classification of PPA and MCI.Frontiers in human neuroscience · 2025Article
- Connected Speech Fluency in Poststroke and Progressive Aphasia: A Scoping Review of Quantitative Approaches and Features.American journal of speech-language pathology · 2024Article
- Discriminating nonfluent/agrammatic and logopenic PPA variants with automatically extracted morphosyntactic measures from connected speech.Cortex; a journal devoted to the study of the nervous system and behavior · 2024Article
- Neural basis of speech and grammar symptoms in non-fluent variant primary progressive aphasia spectrum.Brain : a journal of neurology · 2024Article
- Changes in Digital Speech Measures in Asymptomatic Carriers of Pathogenic Variants Associated With Frontotemporal Degeneration.Neurology · 2024Article
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13 authors at 1 institution in 1 country.
Adolfo M GarcíaFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.ORCID https://orcid.org/0000-0002-6936-0114
Ariane E WelchFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.
Maria Luisa MandelliFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.
Maya L HenryFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.
Sladjana LukicFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.
María José Torres PriorisFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.ORCID https://orcid.org/0000-0003-3795-8151
Jessica DeleonFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.
Buddhika M RatnasiriFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.
Diego L Lorca-PulsFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.
Bruce L MillerFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.
William SeeleyFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.
Adam P VogelFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia.ORCID https://orcid.org/0000-0002-3505-2631
Maria Luisa Gorno-TempiniFrom the Global Brain Health Institute (A.M.G.), University of California, San Francisco; Cognitive Neuroscience Center (A.M.G.), Universidad de San Andrés, Buenos Aires; National Scientific and Technical Research Council (CONICET) (A.M.G.), Buenos Aires, Argentina; Departamento de Lingüística y Literatura, Facultad de Humanidades (A.M.G.), Universidad de Santiago de Chile; Memory and Aging Center (A.E.W., M.L.M., S.L., J.D., B.M.R., D.L.L.P., B.L.M., W.S., M.L.G.-T.), Department of Neurology, University of California, San Francisco; Department of Communication Sciences and Disorders (M.L.H.), University of Texas at Austin; Department of Communication Sciences and Disorders (S.L.), Adelphi University, Garden City, NY; Cognitive Neurology and Aphasia Unit (M.J.T.P.), Centro de Investigaciones Médico-Sanitarias (M.J.T.P.), University of Malaga; Instituto de Investigación Biomédica de Málaga - IBIMA (M.J.T.P.), Malaga; Area of Psychobiology (M.J.T.P.), Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain; Sección Neurología (D.L.L.P.), Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Chile; Centre for Neuroscience of Speech (A.P.V.), Department of Audiology & Speech Pathology, The University of Melbourne; and Redenlab (A.P.V.), Melbourne, Australia. marialuisa.gornotempini@ucsf.edu.
University of San Andrés · AR
Funding
TDP-43 Loss-of-Function: Biology to BiomarkersP01AG019724 · NIA · UNIVERSITY OF PENNSYLVANIA · PI Jennifer Merrilees · 2002 to 2026
$67.2MProgressive Aphasia Cognition Anatomy and ProgressionR01NS050915 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MARIA LUISA GORNO TEMPINI · 2004 to 2026
$11.0MConnectomic imaging in familial and sporadic frontotemporal degenerationU01AG052943 · NIA · UNIVERSITY OF PENNSYLVANIA · PI GORNO TEMPINI, MARIA LUISA, GROSSMAN, MURRAY · 2016 to 2019
$5.9MPrimary Progressive Aphasia: Cognition, Anatomy and ProgressionRF1NS050915 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI GORNO TEMPINI, MARIA LUISA · 2022 to 2022
$4.7MEstablishing Evidence-based Treatment for Speech and Language in Primary Progressive AphasiaR01DC016291 · NIDCD · UNIVERSITY OF TEXAS AT AUSTIN · PI HENRY, MAYA · 2017 to 2021
$3.3MTraining program in the neurology of language and neurodegenerative aphasiasK24DC015544 · NIDCD · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI GORNO TEMPINI, MARIA LUISA · 2016 to 2025
$1.9MPrimary Progressive Aphasia: Beyond the Clinical VariantsK23DC018021 · NIDCD · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI DELEON, JESSICA ANNE · 2020 to 2024
$995kNIA NIH HHS P01 AG019724NIA NIH HHS U01 AG052943NIDCD NIH HHS K23 DC018021NIDCD NIH HHS K24 DC015544NIDCD NIH HHS R01 DC016291NINDS NIH HHS R01 NS050915NINDS NIH HHS RF1 NS050915
Abstract
BACKGROUND AND
objectivesMotor speech function, including speech timing, is a key domain for diagnosing nonfluent/agrammatic variant primary progressive aphasia (nfvPPA). Yet, standard assessments use subjective, specialist-dependent evaluations, undermining reliability and scalability. Moreover, few studies have examined relevant anatomo-clinical alterations in patients with pathologically confirmed diagnoses. This study overcomes such caveats using automated speech timing analyses in a unique cohort of autopsy-proven cases.
methodsIn a cross-sectional study, we administered an overt reading task and quantified articulation rate, mean syllable and pause duration, and syllable and pause duration variability. Neuroanatomical disruptions were assessed using cortical thickness and white matter (WM) atrophy analysis.
resultsWe evaluated 22 persons with nfvPPA (mean age: 67.3 years; 13 female patients) and confirmed underlying 4-repeat tauopathy, 15 persons with semantic variant primary progressive aphasia (svPPA; mean age: 66.5 years; 8 female patients), and 10 healthy controls (HCs; 70 years; 5 female patients). All 5 speech timing measures revealed alterations in persons with nfvPPA relative to both the HC and svPPA groups, controlling for dementia severity. The articulation rate robustly discriminated individuals with nfvPPA from HCs (area under the ROC curve [AUC] = 0.95), outperforming specialist-dependent perceptual measures of dysarthria and apraxia of speech severity. Patients with nfvPPA exhibited structural abnormalities in left precentral and middle frontal as well as bilateral superior frontal regions, including their underlying WM. The articulation rate correlated with atrophy of the left pars opercularis and supplementary/presupplementary motor areas. Secondary analyses showed that, controlling for dementia severity, all measures yielded greater deficits in patients with nfvPPA and corticobasal degeneration (nfvPPA-CBD, n = 12) than in those with progressive supranuclear palsy pathology (nfvPPA-PSP, DISCUSSION: Automated speech timing analyses can capture specific markers of nfvPPA while potentially discriminating between patients with different tauopathies. Thanks to its objectivity and scalability; this approach could support standard speech assessments. CLASSIFICATION OF EVIDENCE: This study provides Class III evidence that automated speech analysis can accurately differentiate patients with nonfluent PPA from normal controls and patients with semantic variant PPA.
Indexed as
Aphasia, Primary ProgressivePrimary Progressive Nonfluent AphasiaAgedAtrophyAutopsyCross-Sectional StudiesFemaleHumansReproducibility of ResultsSpeech
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