Publications

  1. Meade G, Whitwell JL, Dickson DW, Duffy JR, Clark HM, Ahlskog JE, Machulda MM, Josephs KA, Utianski RL. Primary Progressive Apraxia of Speech Caused by TDP-43: A Case Report. Neurol Genet. 2024 Apr; 10 (2):e200134 Epub 2024 Mar 19
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  2. Shir D, Corriveau-Lecavalier N, Bermudez Noguera C, Barnard L, Pham NTT, Botha H, Duffy JR, Clark HM, Utianski RL, Knopman DS, Petersen RC, Boeve BF, Murray ME, Nguyen AT, Reichard RR, Dickson DW, Day GS, Kremers WK, Graff-Radford NR, Jones DT, Machulda MM, Fields JA, Whitwell JL, Josephs KA, Graff-Radford J. Clinicoradiological and neuropathological evaluation of primary progressive aphasia. J Neurol Neurosurg Psychiatry. 2024 Mar 21 [Epub ahead of print]
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  3. Tetzloff KA, Duffy JR, Clark HM, Josephs KA, Whitwell JL, Utianski RL. Characterizing Speech Errors Across Primary Progressive Apraxia of Speech Subtypes. J Speech Lang Hear Res. 2024 Mar 11; 67 (3):811-820 Epub 2024 Feb 20
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  4. Gatto RG, Martin PR, Utianski RL, Duffy JR, Clark HM, Botha H, Machulda MM, Josephs KA, Whitwell JL. Diffusion tensor imaging-based multi-fiber tracking reconstructions can regionally differentiate phonetic versus prosodic subtypes of progressive apraxia of speech. Cortex. 2024 Feb; 171:272-286 Epub 2023 Nov 08
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  5. Badihian N, Ali F, Botha H, Savica R, Machulda MM, Clark HM, Stierwalt JAG, Pham NTT, Baker MC, Rademakers R, Lowe V, Whitwell JL, Josephs KA. The MAPT p.E342K and p.R406W mutations are associated with progressive supranuclear palsy with atypical features. Parkinsonism Relat Disord. 2024 Feb; 119:105962 Epub 2023 Dec 17
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  6. Tetzloff KA, Martin PR, Duffy JR, Utianski RL, Clark HM, Botha H, Machulda MM, Thu Pham NT, Schwarz CG, Senjem ML, Jack CR Jr, Lowe VJ, Josephs KA, Whitwell JL. Longitudinal flortaucipir, metabolism and volume differ between phonetic and prosodic speech apraxia. Brain. 2024 Jan 13 [Epub ahead of print]
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  7. Gatto RG, Meade G, Duffy JR, Clark HM, Utianski RL, Botha H, Machulda MM, Josephs KA, Whitwell JL. Combined assessment of progressive apraxia of speech brain microstructure by diffusion tensor imaging tractography and multishell neurite orientation dispersion and density imaging. Brain Behav. 2024 Jan; 14 (1):e3346
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  8. Wauters LD, Croot K, Dial HR, Duffy JR, Grasso SM, Kim E, Schaffer Mendez K, Ballard KJ, Clark HM, Kohley L, Murray LL, Rogalski EJ, Figeys M, Milman L, Henry ML. Behavioral Treatment for Speech and Language in Primary Progressive Aphasia and Primary Progressive Apraxia of Speech: A Systematic Review. Neuropsychol Rev. 2023 Oct 4 Epub 2023 Oct 04
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  9. Utianski RL, Meade G, Duffy JR, Clark HM, Botha H, Machulda MM, Dickson DW, Whitwell JL, Josephs KA. Longitudinal characterization of patients with progressive apraxia of speech without clearly predominant phonetic or prosodic speech features. Brain Lang. 2023 Oct; 245:105314 Epub 2023 Aug 20
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  10. Utianski RL, Martin PR, Duffy JR, Clark HM, Stierwalt JAG, Botha H, Ali F, Whitwell JL, Josephs KA. Assessing Patients and Care Partner Ratings of Communication-Related Participation Restrictions: Insights From Degenerative Disease. Am J Speech Lang Pathol. 2023 Aug 17; 32 (4S):1793-1805 Epub 2023 Feb 09
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  11. Utianski RL, Duffy JR, Martin PR, Clark HM, Stierwalt JAG, Botha H, Ali F, Whitwell JL, Josephs KA. Rate Modulation Abilities in Acquired Motor Speech Disorders. J Speech Lang Hear Res. 2023 Aug 17; 66 (8S):3194-3205 Epub 2023 Feb 13
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  12. Petroi-Bock D, Clark HM, Stierwalt JAG, Botha H, Ali F, Whitwell JL, Josephs KA. Influences of motor speech impairments on the presentation of dysphagia in progressive supranuclear palsy. Int J Speech Lang Pathol. 2023 Jun 19; 1-11 Epub 2023 June 19
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  13. Chandregowda A, Clark HM, Machulda MM, Pham NTT, Lowe VJ, Josephs KA, Whitwell JL. A Case of Atypical Alzheimer's Disease With Clinical Manifestation That Straddled the Boundary Between Primary Progressive Aphasia and Posterior Cortical Atrophy. Neurologist. 2023 May 1; 28 (3):195-197 Epub 2023 May 01
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  14. Josephs KA, Duffy JR, Martin PR, Stephens YC, Singh NA, Clark HM, Botha H, Lowe VJ, Whitwell JL, Utianski RL. Acoustic Analysis and Neuroimaging Correlates of Diadochokinetic Rates in Mild-Moderate Primary Progressive Apraxia of Speech. Brain Lang. 2023 May; 240 Epub 2023 Apr 06
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  15. Duffy JR, Martin PR, Clark HM, Utianski RL, Strand EA, Whitwell JL, Josephs KA. The Apraxia of Speech Rating Scale: Reliability, Validity, and Utility. Am J Speech Lang Pathol. 2023 Mar 9; 32 (2):469-491 Epub 2023 Jan 11
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  16. Chenausky KV, Baas B, Stoeckel R, Brown T, Green JR, Runke C, Schimmenti L, Clark H. Comorbidity and Severity in Childhood Apraxia of Speech: A Retrospective Chart Review. J Speech Lang Hear Res. 2023 Mar 7; 66 (3):791-803 Epub 2023 Feb 16
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  17. Pavone C, Weigand SW, Ali F, Clark HM, Botha H, Machulda MM, Savica R, Pham NTT, Grijalva RM, Schwarz CG, Senjem ML, Agosta F, Filippi M, Jack CR, Lowe VJ, Josephs KA, Whitwell JL. Longitudinal clinical decline and baseline predictors in progressive supranuclear palsy. Parkinsonism Relat Disord. 2023 Feb; 107:105290 Epub 2023 Jan 16
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  18. Satoh R, Arani A, Senjem ML, Duffy JR, Clark HM, Utianski RL, Botha H, Machulda MM, Jack CR Jr, Whitwell JL, Josephs KA. Spatial patterns of elevated magnetic susceptibility in progressive apraxia of speech. Neuroimage Clin. 2023; 38:103394 Epub 2023 Mar 28
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  19. Tetzloff KA, Duffy JR, Clark HM, Pham NTT, Machulda MM, Botha H, Jack CR, Dickson DW, Lowe VJ, Josephs KA, Whitwell JL, Utianski RL. Amyloid and Tau PET Positivity in Progressive Agrammatic Aphasia and Apraxia of Speech. J Alzheimers Dis. 2023; 96 (4):1759-1765
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  20. Utianski RL, Trang Thu Pham N, Botha H, Ali F, Duffy JR, Clark HM, Lowe VJ, Whitwell JL, Josephs KA. Longitudinal changes in dopamine transporter uptake scans in progressive apraxia of speech. Clin Park Relat Disord. 2023; 9:100207 Epub 2023 June 16
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  21. Utianski RL, Clark HM, Martin PR, Stierwalt JAG, Duffy JR, Botha H, Ali F, Josephs KA. Patient and Care Partner Ratings of Communication Participation in Frontotemporal Dementia. Alzheimers Dement. 2022 Dec; 18 Suppl 9:e060715
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  22. Sintini I, Duffy JR, Clark HM, Utianski RL, Botha H, Machulda MM, Senjem ML, Strand EA, Schwarz CG, Lowe VJ, Jack CR, Josephs KA, Whitwell JL. Functional connectivity to the premotor cortex maps onto longitudinal brain neurodegeneration in progressive apraxia of speech. Neurobiol Aging. 2022 Dec; 120:105-116 Epub 2022 Sept 02
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  23. Carlos AF, Sekiya H, Koga S, Pham NTT, Ali F, Botha H, Clark HM, Coon EA, Lowe V, Ahlskog JE, Trejo-Lopez JA, Dickson DW, Whitwell JL, Josephs KA. Tau-PET and multimodal imaging in clinically atypical multiple system atrophy masquerading as progressive supranuclear palsy. Parkinsonism Relat Disord. 2022 Aug; 101:9-14 Epub 2022 June 16
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  24. Polsinelli AJ, Machulda MM, Martin PR, Duffy JR, Clark HM, Butts AM, Botha H, Lowe VJ, Whitwell JL, Josephs KA, Utianski RL. Neuropsychological Profiles of Patients with Progressive Apraxia of Speech and Aphasia. J Int Neuropsychol Soc. 2022 May; 28 (5):441-451 Epub 2021 July 22
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  25. Grijalva RM, Pham NTT, Huang Q, Martin PR, Ali F, Clark HM, Duffy JR, Utianski RL, Botha H, Machulda MM, Weigand SD, Ahlskog JE, Dickson DW, Josephs KA, Whitwell JL. Brainstem Biomarkers of Clinical Variant and Pathology in Progressive Supranuclear Palsy. Mov Disord. 2022 Apr; 37 (4):702-712 Epub 2021 Dec 31
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  26. Utianski RL, Botha H, Caviness JN, Worrell GA, Duffy JR, Clark HM, Whitwell JL, Josephs KA. A Preliminary Report of Network Electroencephalographic Measures in Primary Progressive Apraxia of Speech and Aphasia. Brain Sci. 2022 Mar 12; 12 (3)
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  27. Clark HM, Duffy JR, Strand EA, Hanley H, Solomon NP. Orofacial Muscle Strength across the Dysarthrias. Brain Sci. 2022 Mar 10; 12(3).
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  28. Bower SM, Weigand SD, Ali F, Clark HM, Botha H, Stierwalt JA, Whitwell JL, Josephs KA. Depression and Apathy across Different Variants of Progressive Supranuclear Palsy. Mov Disord Clin Pract. 2022 Feb; 9 (2):212-217 Epub 2021 Dec 31
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  29. Keser Z, Buchl SC, Seven NA, Markota M, Clark HM, Jones DT, Lanzino G, Brown RD Jr, Worrell GA, Lundstrom BN. Electroencephalogram (EEG) With or Without Transcranial Magnetic Stimulation (TMS) as Biomarkers for Post-stroke Recovery: A Narrative Review. Front Neurol. 2022; 13:827866 Epub 2022 Feb 22
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  30. Valls Carbo A, Reid RI, Tosakulwong N, Weigand SD, Duffy JR, Clark HM, Utianski RL, Botha H, Machulda MM, Strand EA, Schwarz CG, Jack CR, Josephs KA, Whitwell JL. Tractography of supplementary motor area projections in progressive speech apraxia and aphasia. Neuroimage Clin. 2022; 34:102999 Epub 2022 Mar 30
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  31. Hokelekli FO, Duffy JR, Clark HM, Utianski RL, Botha H, Ali F, Stierwalt JA, Machulda MM, Reichard RR, Dickson DW, Whitwell JL, Josephs KA. Autopsy Validation of Progressive Supranuclear Palsy-Predominant Speech/Language Disorder Criteria. Mov Disord. 2022 Jan; 37 (1):213-218 Epub 2021 Oct 10
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  32. Carlos AF, Tosakulwong N, Weigand SD, Buciuc M, Ali F, Clark HM, Botha H, Utianski RL, Machulda MM, Schwarz CG, Reid RI, Senjem ML, Jack CR Jr, Ahlskog JE, Dickson DW, Josephs KA, Whitwell JL. Histologic lesion type correlates of magnetic resonance imaging biomarkers in four-repeat tauopathies. Brain Commun. 2022; 4 (3):fcac108 Epub 2022 Apr 28
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  33. Gatto RG, Martin PR, Ali F, Clark HM, Duffy JR, Utianski RL, Botha H, Machulda MM, Dickson DW, Josephs KA, Whitwell JL. Diffusion tractography of superior cerebellar peduncle and dentatorubrothalamic tracts in two autopsy confirmed progressive supranuclear palsy variants: Richardson syndrome and the speech-language variant. Neuroimage Clin. 2022; 35:103030 Epub 2022 May 11
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  34. Hokelekli FO, Duffy JR, Clark HM, Utianski RL, Botha H, Stierwalt JA, Strand EA, Machulda MM, Whitwell JL, Josephs KA. Cross-Sectional and Longitudinal Assessment of Behavior in Primary Progressive Apraxia of Speech and Agrammatic Aphasia. Dement Geriatr Cogn Disord. 2022; 51 (2):193-202 Epub 2022 May 06
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  35. Chandregowda A, Clark HM, Duffy JR, Machulda MM, Lowe VJ, Whitwell JL, Josephs KA. Dynamic Aphasia as a Variant of Frontotemporal Dementia. Cogn Behav Neurol. 2021 Dec 2; 34 (4):303-318 Epub 2021 Dec 02
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  36. Dang J, Graff-Radford J, Duffy JR, Utianski RL, Clark HM, Stierwalt JA, Whitwell JL, Josephs KA, Botha H. Progressive apraxia of speech: delays to diagnosis and rates of alternative diagnoses. J Neurol. 2021 Dec; 268 (12):4752-4758 Epub 2021 May 04
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  37. Utianski RL, Martin PR, Duffy JR, Botha H, Clark HM, Josephs KA. Assessing Change in Communication Limitations in Primary Progressive Apraxia of Speech and Aphasia: A 1-Year Follow-Up Study. Am J Speech Lang Pathol. 2021 Nov 4; 30 (6):2368-2378 Epub 2021 Sept 07
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  38. Clark HM, Tosakulwong N, Weigand SD, Ali F, Botha H, Pham NTT, Schwarz CG, Reid RI, Senjem ML, Jack CR Jr, Lowe VJ, Ahlskog JE, Josephs KA, Whitwell JL. Gray and White Matter Correlates of Dysphagia in Progressive Supranuclear Palsy. Mov Disord. 2021 Nov; 36 (11):2669-2675 Epub 2021 Aug 23
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  39. Chandregowda A, Clark HM. Characterizing Anarthria to Facilitate Neurological Diagnosis: A Case Illustration Perspectives of the ASHA Special Interest Groups. 2021.
  40. Hokelekli FO, Ali F, Carlos AF, Martin PR, Clark HM, Duffy JR, Utianski RL, Botha H, St Louis EK, Whitwell JL, Josephs KA. Sleep disturbances in the speech-language variant of progressive supranuclear palsy. Parkinsonism Relat Disord. 2021 Oct; 91:9-12 Epub 2021 Aug 18
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  41. Whitwell JL, Tosakulwong N, Clark HM, Ali F, Botha H, Weigand SD, Sintini I, Machulda MM, Schwarz CG, Reid RI, Jack CR Jr, Ahlskog JE, Josephs KA. Diffusion tensor imaging analysis in three progressive supranuclear palsy variants. J Neurol. 2021 Sep; 268 (9):3409-3420 Epub 2021 Mar 12
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  42. Clark HM, Utianski RL, Ali F, Botha H, Whitwell JL, Josephs KA. Motor Speech Disorders and Communication Limitations in Progressive Supranuclear Palsy. Am J Speech Lang Pathol. 2021 Jun 18; 30 (3S):1361-1372 Epub 2021 Mar 09
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  43. Josephs KA, Duffy JR, Clark HM, Utianski RL, Strand EA, Machulda MM, Botha H, Martin PR, Pham NTT, Stierwalt J, Ali F, Buciuc M, Baker M, Fernandez De Castro CH, Spychalla AJ, Schwarz CG, Reid RI, Senjem ML, Jack CR Jr, Lowe VJ, Bigio EH, Reichard RR, Polley EJ, Ertekin-Taner N, Rademakers R, DeTure MA, Ross OA, Dickson DW, Whitwell JL. A molecular pathology, neurobiology, biochemical, genetic and neuroimaging study of progressive apraxia of speech. Nat Commun. 2021 Jun 8; 12 (1):3452 Epub 2021 June 08
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  44. Clark HM. Distinguishing Spastic and Dystonic Features in a Patient With a History of Brain Stem Encephalitis: A Clinical Case Study Perspectives of the ASHA Special Interest Groups. 2021.
  45. Whitwell JL, Martin P, Duffy JR, Clark HM, Utianski RL, Botha H, Machulda MM, Strand EA, Josephs KA. Survival Analysis in Primary Progressive Apraxia of Speech and Agrammatic Aphasia. Neurol Clin Pract. 2021 Jun; 11 (3):249-255
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  46. Utianski RL, Martin PR, Hanley H, Duffy JR, Botha H, Clark HM, Whitwell JL, Josephs KA. A Longitudinal Evaluation of Speech Rate in Primary Progressive Apraxia of Speech. J Speech Lang Hear Res. 2021 Feb 17; 64 (2):392-404 Epub 2021 Jan 21
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  47. Chandregowda A, Stierwalt JA, Clark HM. Facilitating End-of-Life Interaction Between Patients With Severe Communication Impairment and Their Families Perspectives of the ASHA Special Interest Groups. 2021; 6(3):649-653.
  48. Curet Burleson AX, Pham NTT, Buciuc M, Botha H, Duffy JR, Clark HM, Utianski RL, Machulda MM, Baker MC, Rademakers R, Lowe VJ, Whitwell JL, Josephs KA. Neurobehavioral Characteristics of FDG-PET Defined Right-Dominant Semantic Dementia: A Longitudinal Study. Dement Geriatr Cogn Disord. 2021; 50 (1):17-28 Epub 2021 Mar 23
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  49. Seckin ZI, Duffy JR, Strand EA, Clark HM, Utianski RL, Machulda MM, Botha H, Ali F, Thu Pham NT, Lowe VJ, Whitwell JL, Josephs KA. The evolution of parkinsonism in primary progressive apraxia of speech: A 6-year longitudinal study. Parkinsonism Relat Disord. 2020 Dec; 81:34-40. Epub 2020 Oct 07.
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  50. Utianski RL, Clark HM, Duffy JR, Botha H, Whitwell JL, Josephs KA. Communication Limitations in Patients With Progressive Apraxia of Speech and Aphasia. Am J Speech Lang Pathol. 2020 Nov 12; 29 (4):1976-1986 Epub 2020 Aug 05
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  51. Ghirelli A, Tosakulwong N, Weigand SD, Clark HM, Ali F, Botha H, Duffy JR, Utianski RL, Buciuc M, Murray ME, Labuzan SA, Spychalla AJ, Pham NTT, Schwarz CG, Senjem ML, Machulda MM, Baker M, Rademakers R, Filippi M, Jack CR Jr, Lowe VJ, Parisi JE, Dickson DW, Josephs KA, Whitwell JL. Sensitivity-Specificity of Tau and Amyloid beta Positron Emission Tomography in Frontotemporal Lobar Degeneration. Ann Neurol. 2020 Nov; 88 (5):1009-1022 Epub 2020 Sept 12
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  52. Seckin ZI, Whitwell JL, Utianski RL, Botha H, Ali F, Duffy JR, Clark HM, Machulda MM, Jordan LG, Min HK, Lowe VJ, Josephs KA. Ioflupane 123I (DAT scan) SPECT identifies dopamine receptor dysfunction early in the disease course in progressive apraxia of speech. J Neurol. 2020 Sep; 267(9):2603-2611. Epub 2020 May 09.
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  53. Utianski RL, Botha H, Whitwell JL, Martin PR, Schwarz CG, Duffy JR, Clark HM, Spychalla AJ, Senjem ML, Petersen RC, Knopman DS, Jack CR Jr, Lowe VJ, Josephs KA. Longitudinal flortaucipir ([(18)F]AV-1451) PET uptake in semantic dementia. Neurobiol Aging. 2020 Aug; 92:135-140 Epub 2020 Apr 18
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  54. Clark HM, Stierwalt JAG, Tosakulwong N, Botha H, Ali F, Whitwell JL, Josephs KA. Dysphagia in Progressive Supranuclear Palsy. Dysphagia. 2020 Aug; 35 (4):667-676 Epub 2019 Nov 01
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  55. Utianski RL, Martin PR, Botha H, Schwarz CG, Duffy JR, Petersen RC, Knopman DS, Clark HM, Butts AM, Machulda MM, Jack CR Jr, Lowe VJ, Whitwell JL, Josephs KA. Longitudinal flortaucipir ([(18)F]AV-1451) PET imaging in primary progressive apraxia of speech. Cortex. 2020 Mar; 124:33-43 Epub 2019 Nov 19
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  56. Clark HM, Utianski RL, Duffy JR, Strand EA, Botha H, Josephs KA, Whitwell JL. Western Aphasia Battery-Revised Profiles in Primary Progressive Aphasia and Primary Progressive Apraxia of Speech. Am J Speech Lang Pathol. 2020 Feb 21; 29 (1S):498-510 Epub 2019 Oct 22
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  57. Whitwell JL, Tosakulwong N, Weigand SD, Graff-Radford J, Duffy JR, Clark HM, Machulda MM, Botha H, Utianski RL, Schwarz CG, Senjem ML, Strand EA, Ertekin-Taner N, Jack CR, Lowe VJ, Josephs KA. Longitudinal Amyloid-beta PET in Atypical Alzheimer's Disease and Frontotemporal Lobar Degeneration. J Alzheimers Dis. 2020; 74 (1):377-389
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  58. Whitwell JL, Tosakulwong N, Botha H, Ali F, Clark HM, Duffy JR, Utianski RL, Stevens CA, Weigand SD, Schwarz CG, Senjem ML, Jack CR, Lowe VJ, Ahlskog JE, Dickson DW, Josephs KA. Brain volume and flortaucipir analysis of progressive supranuclear palsy clinical variants. Neuroimage Clin. 2020; 25:102152 Epub 2019 Dec 28
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  59. Solomon NP, Clark HM. The effect of an anti-slip surface on objective measures of tongue strength in healthy adults. International Journal of Orofacial Myology & Myofunctional Therapy. 2020; 13-21
  60. Utianski RL, Botha H, Martin PR, Schwarz CG, Duffy JR, Clark HM, Machulda MM, Butts AM, Lowe VJ, Jack CR Jr, Senjem ML, Spychalla AJ, Whitwell JL, Josephs KA. Clinical and neuroimaging characteristics of clinically unclassifiable primary progressive aphasia. Brain Lang. 2019 Oct; 197:104676 Epub 2019 Aug 13
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  61. Utianski RL, Duffy JR, Clark HM, Machulda MM, Dickson DW, Whitwell JL, Josephs KA. Prominent auditory deficits in primary progressive aphasia: A case study. Cortex. 2019 Aug; 117:396-406 Epub 2019 Feb 21
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  62. Tetzloff KA, Duffy JR, Clark HM, Utianski RL, Strand EA, Machulda MM, Botha H, Martin PR, Schwarz CG, Senjem ML, Reid RI, Gunter JL, Spychalla AJ, Knopman DS, Petersen RC, Jack CR, Lowe VJ, Josephs KA, Whitwell JL. Progressive agrammatic aphasia without apraxia of speech as a distinct syndrome. Brain. 2019 Aug 01; 142(8):2466-2482.
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  63. Whitwell JL, Stevens CA, Duffy JR, Clark HM, Machulda MM, Strand EA, Martin PR, Utianski RL, Botha H, Spychalla AJ, Senjem ML, Schwarz CG, Jack CR Jr, Ali F, Hassan A, Josephs KA. An Evaluation of the Progressive Supranuclear Palsy Speech/Language Variant. Mov Disord Clin Pract. 2019 Jul; 6 (6):452-461 Epub 2019 May 29
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  64. Whitwell JL, Martin PR, Duffy JR, Clark HM, Machulda MM, Schwarz CG, Weigand SD, Sintini I, Senjem ML, Ertekin-Taner N, Botha H, Utianski RL, Graff-Radford J, Jones DT, Boeve BF, Knopman DS, Petersen RC, Jack CR Jr, Lowe VJ, Josephs KA. The influence of beta-amyloid on [(18)F]AV-1451 in semantic variant of primary progressive aphasia. Neurology. 2019 Feb 12; 92 (7):e710-e722 Epub 2019 Jan 11
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  65. Utianski RL, Caviness JN, Worrell GA, Duffy JR, Clark HM, Machulda MM, Whitwell JL, Josephs KA. Electroencephalography in Primary Progressive Aphasia and Apraxia of Speech. Aphasiology. 2019; 33 (11):1410-1417 Epub 2018 Nov 16
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  66. Utianski RL, Botha H, Duffy JR, Clark HM, Martin PR, Butts AM, Machulda MM, Whitwell JL, Josephs KA. Rapid rate on quasi-speech tasks in the semantic variant of primary progressive aphasia: A non-motor phenomenon? J Acoust Soc Am. 2018 Dec; 144 (6):3364
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  67. Utianski RL, Duffy JR, Clark HM, Strand EA, Boland SM, Machulda MM, Whitwell JL, Josephs KA. Clinical Progression in Four Cases of Primary Progressive Apraxia of Speech. Am J Speech Lang Pathol. 2018 Nov 21; 27 (4):1303-1318
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  68. Tetzloff KA, Whitwell JL, Utianski RL, Duffy JR, Clark HM, Machulda MM, Strand EA, Josephs KA. Quantitative assessment of grammar in amyloid-negative logopenic aphasia. Brain Lang. 2018 Nov; 186:26-31. Epub 2018 Sep 08.
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  69. Utianski RL, Whitwell JL, Schwarz CG, Duffy JR, Botha H, Clark HM, Machulda MM, Senjem ML, Knopman DS, Petersen RC, Jack CR Jr, Lowe VJ, Josephs KA. Tau uptake in agrammatic primary progressive aphasia with and without apraxia of speech. Eur J Neurol. 2018 Nov; 25 (11):1352-1357 Epub 2018 July 26
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  70. Tetzloff KA, Utianski RL, Duffy JR, Clark HM, Strand EA, Josephs KA, Whitwell JL. Quantitative Analysis of Agrammatism in Agrammatic Primary Progressive Aphasia and Dominant Apraxia of Speech. J Speech Lang Hear Res. 2018 Sep 19; 61(9):2337-2346.
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  71. Utianski RL, Duffy JR, Clark HM, Strand EA, Botha H, Schwarz CG, Machulda MM, Senjem ML, Spychalla AJ, Jack CR Jr, Petersen RC, Lowe VJ, Whitwell JL, Josephs KA. Prosodic and phonetic subtypes of primary progressive apraxia of speech. Brain Lang. 2018 Sep; 184:54-65 Epub 2018 July 04
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  72. Josephs KA, Martin PR, Botha H, Schwarz CG, Duffy JR, Clark HM, Machulda MM, Graff-Radford J, Weigand SD, Senjem ML, Utianski RL, Drubach DA, Boeve BF, Jones DT, Knopman DS, Petersen RC, Jack CR Jr, Lowe VJ, Whitwell JL. [(18) F]AV-1451 tau-PET and primary progressive aphasia. Ann Neurol. 2018 Mar; 83 (3):599-611 Epub 2018 Mar 13
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  73. Utianski RL, Whitwell JL, Schwarz CG, Senjem ML, Tosakulwong N, Duffy JR, Clark HM, Machulda MM, Petersen RC, Jack CR Jr, Lowe VJ, Josephs KA. Tau-PET imaging with [18F]AV-1451 in primary progressive apraxia of speech. Cortex. 2018 Feb; 99:358-374 Epub 2018 Jan 02
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  74. Owens TE, Machulda MM, Duffy JR, Strand EA, Clark HM, Boland S, Martin PR, Lowe VJ, Jack CR, Whitwell JL, Josephs KA. Patterns of neuropsychological dysfunction and cortical volume changes in logopenic aphasia Journal Of Alzheimers Disease. 2018; 66 (3):1015-25
  75. Botha H, Utianski RL, Whitwell JL, Duffy JR, Clark HM, Strand EA, Machulda MM, Tosakulwong N, Knopman DS, Petersen RC, Jack CR Jr, Josephs KA, Jones DT. Disrupted functional connectivity in primary progressive apraxia of speech. Neuroimage Clin. 2018; 18:617-629 Epub 2018 Mar 03
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  76. Tetzloff KA, Duffy JR, Clark HM, Strand EA, Machulda MM, Schwarz CG, Senjem ML, Reid RI, Spychalla AJ, Tosakulwong N, Lowe VJ, Jack CR Jr, Josephs KA, Whitwell JL. Longitudinal structural and molecular neuroimaging in agrammatic primary progressive aphasia. Brain. 2018 Jan 1; 141 (1):302-317
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  77. Tetzloff KA, Graff-Radford J, Martin PR, Tosakulwong N, Machulda MM, Duffy JR, Clark HM, Senjem ML, Schwarz CG, Spychalla AJ, Drubach DA, Jack CR, Lowe VJ, Josephs KA, Whitwell JL. Regional Distribution, Asymmetry, and Clinical Correlates of Tau Uptake on [18F]AV-1451 PET in Atypical Alzheimer's Disease. J Alzheimers Dis. 2018; 62(4):1713-1724.
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  78. Solomon NP, Makashay MJ, Helou LB, Clark HM. Neurogenic Orofacial Weakness and Speech in Adults With Dysarthria. Am J Speech Lang Pathol. 2017 Aug 15; 26 (3):951-960
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  79. Whitwell JL, Duffy JR, Machulda MM, Clark HM, Strand EA, Senjem ML, Gunter JL, Spychalla AJ, Petersen RC, Jack CR Jr, Josephs KA. Tracking the development of agrammatic aphasia: A tensor-based morphometry study. Cortex. 2017 May; 90:138-148 Epub 2016 Sept 30
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  80. Duffy JR, Hanley H, Utianski R, Clark H, Strand E, Josephs KA, Whitwell JL. Temporal acoustic measures distinguish primary progressive apraxia of speech from primary progressive aphasia. Brain Lang. 2017 May; 168:84-94 Epub 2017 Feb 07
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  81. Barkmeier-Kraemer JM, Clark HM. Speech-Language Pathology Evaluation and Management of Hyperkinetic Disorders Affecting Speech and Swallowing Function. Tremor Other Hyperkinet Mov (N Y). 2017; 7:489 Epub 2017 Sept 21
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  82. Dietsch AM, Clark HM, Steiner JN, Solomon NP. Effects of age, sex, and body position on orofacial muscle tone in healthy adults. Journal of Speech, Language & Hearing Research. 2015 Aug; 58(4):1145-50.
  83. Duffy JR, Strand EA, Clark H, Machulda M, Whitwell JL, Josephs KA. Primary progressive apraxia of speech: Clinical features and acoustic and neurologic correlates. Am J Speech Lang Pathol. 2015; 24(2):88-100.
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  84. Tobin WO, Strand EA, Clark HM, Lowe VJ, Robertson CE, Pittock SJ. NMDA receptor encephalitis causing reversible caudate changes on MRI and PET imaging. Neurol Clin Pract. 2014 Dec; 4 (6):470-473
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  85. Clark HM, Shelton N. Training effects of the effortful swallow under three exercise conditions. Dysphagia. 2014 Oct; 29 (5):553-63 Epub 2014 June 10
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  86. Strand EA, Duffy JR, Clark HM, Josephs K. The Apraxia of Speech Rating Scale: a tool for diagnosis and description of apraxia of speech. J Commun Disord. 2014 Sep-Oct; 51:43-50 Epub 2014 July 14
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  87. Clark HM, Duffy JR, Whitwell JL, Ahlskog JE, Sorenson EJ, Josephs KA. Clinical and imaging characterization of progressive spastic dysarthria. Eur J Neurol. 2014 Mar; 21 (3):368-76 Epub 2013 Sept 19
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  88. Clark HM, Anderson CC, Hietpas F. Volumes of discrete sips from straws of varying internal diameters. Am J Speech Lang Pathol. 2014 Feb; 23: (1)84-9.
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  89. Dietsch AM, Solomon NP, Sharkey LA, Duffy JR, Strand EA, Clark HM. Perceptual and instrumental assessments of orofacial muscle tone in dysarthric and normal speakers. J Rehabil Res Dev. 2014; 51(7):1127-42.
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  90. Clark HM, Shelton N. Negative Pressure and Muscle Activity during Discrete Sips from High Resistance Straws. International Journal of Orofacial Myology.2013;39:4-11.
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  91. Clark H. Muscle isolations. ASHA Leader. 2013; 18(10 Oct).
  92. Clark HM. Specificity of training in the lingual musculature. J Speech Lang Hear Res. 2012 Apr; 55(2):657-67. Epub 2012 Jan 03.
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  93. Clark HM, Solomon NP. Age and sex differences in orofacial strength. Dysphagia. 2012 Mar; 27(1):2-9. Epub 2011 Feb 25.
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  94. Arvedson J, Clark H, Lazarus C, Schooling T, Frymark T. Evidence-based systematic review: effects of oral motor interventions on feeding and swallowing in preterm infants. Am J Speech Lang Pathol. 2010 Nov; 19(4):321-40. Epub 2010 Jul 9.
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  95. Clark HM, Solomon NP. Submental muscle tissue compliance during relaxation, contraction, and after tone-modification interventions. Int J Orofacial Myology. 2010 Nov; 36:6-15.
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  96. Arvedson J, Clark H, Lazarus C, Schooling T, Frymark T. The effects of oral-motor exercises on swallowing in children: an evidence-based systematic review. Dev Med Child Neurol. 2010 Nov; 52(11):1000-13.
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  97. Solomon NP, Clark HM. Quantifying orofacial muscle stiffness using damped oscillation. Journal of Medical Speech-Language Pathology. 2010; 18:120-24.
  98. Clark H, Lazarus C, Arvedson J, Schooling T, Frymark T. Evidence-based systematic review: effects of neuromuscular electrical stimulation on swallowing and neural activation. Am J Speech Lang Pathol. 2009 Nov; 18(4):361-75. Epub 2009 Sep 02.
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  99. Clark HM, O'Brien K, Calleja A, Corrie SN. Effects of directional exercise on lingual strength. J Speech Lang Hear Res. 2009 Aug; 52(4):1034-47.
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  100. Clark HM. The role of strength training in speech sound disorders. Semin Speech Lang. 2008 Nov; 29(4):276-83. Epub 2008 Dec 04.
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  101. Robin DA, Jacks A, Hageman C, Clark HM, Woodworth G. Visuomotor tracking abilities of speakers with apraxia of speech or conduction aphasia. Brain Lang. 2008 Aug; 106(2):98-106. Epub 2008 Jun 16.
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  102. Solomon NP, Clark HM, Makashay MJ, Newman LA. Assessment of orofacial strength in adults with dysarthria Journal of Medical Speech-Language Pathology. 2008; 16:251-8.
  103. Clark HM. Neuromuscular treatments for speech and swallowing: a tutorial. Am J Speech Lang Pathol. 2003 Nov; 12(4):400-15.
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  104. Clark HM, Henson PA, Barber WD, Stierwalt JA, Sherrill M. Relationships among subjective and objective measures of tongue strength and oral phase swallowing impairments. Am J Speech Lang Pathol. 2003 Feb; 12 (1):40-50
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  105. Clark HM, Clark NE. Strategic tool selection in distance education: general guidelines and a case example. American Association of Behavioral and Social Sciences Journal. 2002; Winter:1 - 8.
  106. Clark HM, Robin DA, McCullagh G, Schmidt RA. Motor control in children and adults during a non-speech oral task. J Speech Lang Hear Res. 2001 Oct; 44(5):1015-25.
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  107. Clark HM, Robin DA. Generalized motor programmes and parameterization in apraxia of speech and conduction aphasia Aphasiology. 1998; 12:699-713.