Heather Clark, PhD

  • 986 Citations
  • 16 Scopus h-Index
19982020

Research output per year

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Research Output

  • 986 Citations
  • 16 Scopus h-Index
  • 50 Article
  • 4 Review article
  • 3 Comment/debate
  • 1 Short survey
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Article
2020

Brain volume and flortaucipir analysis of progressive supranuclear palsy clinical variants

Whitwell, J. L., Tosakulwong, N., Botha, H., Ali, F., Clark, H. M., Duffy, J. R., Utianski, R. L., Stevens, C. A., Weigand, S. D., Schwarz, C. G., Senjem, M. L., Jack, C. R., Lowe, V. J., Ahlskog, J. E., Dickson, D. W. & Josephs, K. A., 2020, In : NeuroImage: Clinical. 25, 102152.

Research output: Contribution to journalArticle

Open Access

Ioflupane 123I (DAT scan) SPECT identifies dopamine receptor dysfunction early in the disease course in progressive apraxia of speech

Seckin, Z. I., Whitwell, J. L., Utianski, R. L., Botha, H., Ali, F., Duffy, J. R., Clark, H. M., Machulda, M. M., Jordan, L. G., Min, H. K., Lowe, V. J. & Josephs, K. A., Jan 1 2020, (Accepted/In press) In : Journal of Neurology.

Research output: Contribution to journalArticle

Longitudinal amyloid-β PET in atypical Alzheimer's disease and frontotemporal lobar degeneration

Whitwell, J. L., Tosakulwong, N., Weigand, S. D., Graff-Radford, J., Duffy, J. R., Clark, H. M., Machulda, M. M., Botha, H., Utianski, R. L., Schwarz, C. G., Senjem, M. L., Strand, E., Ertekin-Taner, N., Jack, C. R., Lowe, V. J. & Josephs, K. A., Jan 1 2020, In : Journal of Alzheimer's Disease. 74, 1, p. 377-389 13 p.

Research output: Contribution to journalArticle

Longitudinal flortaucipir ([18F]AV-1451) PET uptake in semantic dementia

Utianski, R. L., Botha, H., Whitwell, J. L., Martin, P. R., Schwarz, C. G., Duffy, J. R., Clark, H. M., Spychalla, A. J., Senjem, M. L., Petersen, R. C., Knopman, D. S., Jack, C. R., Lowe, V. J. & Josephs, K. A., Aug 2020, In : Neurobiology of aging. 92, p. 135-140 6 p.

Research output: Contribution to journalArticle

Open Access
2 Scopus citations
2019

An Evaluation of the Progressive Supranuclear Palsy Speech/Language Variant

Whitwell, J. L., Stevens, C. A., Duffy, J. R., Clark, H. M., Machulda, M. M., Strand, E., Martin, P. R., Utianski, R. L., Botha, H., Spychalla, A. J., Senjem, M. L., Schwarz, C. G., Jack, C. R., Ali, F., Hassan, A. & Josephs, K. A., Jul 2019, In : Movement Disorders Clinical Practice. 6, 6, p. 452-461 10 p.

Research output: Contribution to journalArticle

2 Scopus citations

Clinical and neuroimaging characteristics of clinically unclassifiable primary progressive aphasia

Utianski, R. L., Botha, H., Martin, P. R., Schwarz, C. G., Duffy, J. R., Clark, H. M., Machulda, M. M., Butts, A. M., Lowe, V. J., Jack, C. R., Senjem, M. L., Spychalla, A. J., Whitwell, J. L. & Josephs, K. A., Oct 1 2019, In : Brain and Language. 197, 104676.

Research output: Contribution to journalArticle

2 Scopus citations

Dysphagia in Progressive Supranuclear Palsy

Clark, H. M., Stierwalt, J. A. G., Tosakulwong, N., Botha, H., Ali, F., Whitwell, J. L. & Josephs, K. A., Jan 1 2019, (Accepted/In press) In : Dysphagia.

Research output: Contribution to journalArticle

Progressive agrammatic aphasia without apraxia of speech as a distinct syndrome

Tetzloff, K. A., Duffy, J. R., Clark, H. M., Utianski, R. L., Strand, E., Machulda, M. M., Botha, H., Martin, P. R., Schwarz, C. G., Senjem, M. L., Reid, R. I., Gunter, J. L., Spychalla, A. J., Knopman, D. S., Petersen, R. C., Jack, C. R., Lowe, V. J., Josephs, K. A. & Whitwell, J. L., Aug 1 2019, In : Brain. 142, 8, p. 2466-2482 17 p.

Research output: Contribution to journalArticle

2 Scopus citations

The influence of β-amyloid on [ 18 F]AV-1451 in semantic variant of primary progressive aphasia

Whitwell, J. L., Martin, P. R., Duffy, J. R., Clark, H., Machulda, M. M., Schwarz, C., Weigand, S. D., Sintini, I., Senjem, M. L., Taner, N., Botha, H., Utianski, R., Graff-Radford, J., Jones, D. T., Boeve, B. F., Knopman, D. S., Petersen, R. C., Jack, C. R. J., Lowe, V. & Josephs, K. A., Feb 12 2019, In : Neurology. 92, 7, p. e710-e722

Research output: Contribution to journalArticle

3 Scopus citations
2018

[18F]AV-1451 tau-PET and primary progressive aphasia

Josephs, K. A., Martin, P. R., Botha, H., Schwarz, C., Duffy, J. R., Clark, H., Machulda, M. M., Graff-Radford, J., Weigand, S. D., Senjem, M. L., Utianski, R., Drubach, D., Boeve, B. F., Jones, D. T., Knopman, D. S., Petersen, R. C., Jack, C. R. J., Lowe, V. & Whitwell, J. L., Jan 1 2018, (Accepted/In press) In : Annals of Neurology.

Research output: Contribution to journalArticle

20 Scopus citations

Clinical Progression in Four Cases of Primary Progressive Apraxia of Speech

Utianski, R. L., Duffy, J. R., Clark, H. M., Strand, E., Boland, S. M., Machulda, M. M., Whitwell, J. L. & Josephs, K. A., Nov 21 2018, In : American Journal of Speech-Language Pathology. 27, 4, p. 1303-1318 16 p.

Research output: Contribution to journalArticle

4 Scopus citations

Disrupted functional connectivity in primary progressive apraxia of speech

Botha, H., Utianski, R., Whitwell, J. L., Duffy, J. R., Clark, H., Strand, E. A., Machulda, M. M., Tosakulwong, N., Knopman, D. S., Petersen, R. C., Jack, C. R. J., Josephs, K. A. & Jones, D. T., Jan 1 2018, In : NeuroImage: Clinical. 18, p. 617-629 13 p.

Research output: Contribution to journalArticle

5 Scopus citations

Longitudinal structural and molecular neuroimaging in agrammatic primary progressive aphasia

Tetzloff, K. A., Duffy, J. R., Clark, H., Strand, E. A., Machulda, M. M., Schwarz, C., Senjem, M. L., Reid, R. I., Spychalla, A. J., Tosakulwong, N., Lowe, V., Jack, C. R. J., Josephs, K. A. & Whitwell, J. L., Jan 1 2018, In : Brain. 141, 1, p. 302-317 16 p.

Research output: Contribution to journalArticle

10 Scopus citations

Patterns of Neuropsychological Dysfunction and Cortical Volume Changes in Logopenic Aphasia

Owens, T. E., Machulda, M. M., Duffy, J. R., Strand, E., Clark, H. M., Boland, S., Martin, P. R., Lowe, V. J., Jack, C. R., Whitwell, J. L. & Josephs, K. A., Jan 1 2018, In : Journal of Alzheimer's Disease. 66, 3, p. 1015-1025 11 p.

Research output: Contribution to journalArticle

3 Scopus citations

Prosodic and phonetic subtypes of primary progressive apraxia of speech

Utianski, R., Duffy, J. R., Clark, H., Strand, E. A., Botha, H., Schwarz, C., Machulda, M. M., Senjem, M. L., Spychalla, A. J., Jack, C. R. J., Petersen, R. C., Lowe, V., Whitwell, J. L. & Josephs, K. A., Sep 1 2018, In : Brain and Language. 184, p. 54-65 12 p.

Research output: Contribution to journalArticle

15 Scopus citations

Quantitative assessment of grammar in amyloid-negative logopenic aphasia

Tetzloff, K. A., Whitwell, J. L., Utianski, R. L., Duffy, J. R., Clark, H. M., Machulda, M. M., Strand, E. & Josephs, K. A., Nov 1 2018, In : Brain and Language. 186, p. 26-31 6 p.

Research output: Contribution to journalArticle

1 Scopus citations
1 Scopus citations

Regional Distribution, Asymmetry, and Clinical Correlates of Tau Uptake on [18F]AV-1451 PET in Atypical Alzheimer's Disease

Tetzloff, K. A., Graff-Radford, J., Martin, P. R., Tosakulwong, N., Machulda, M. M., Duffy, J. R., Clark, H., Senjem, M. L., Schwarz, C., Spychalla, A. J., Drubach, D., Jack, C. R. J., Lowe, V., Josephs, K. A. & Whitwell, J. L., Jan 1 2018, In : Journal of Alzheimer's Disease. 62, 4, p. 1713-1724 12 p.

Research output: Contribution to journalArticle

12 Scopus citations

Tau-PET imaging with [18F]AV-1451 in primary progressive apraxia of speech

Utianski, R., Whitwell, J. L., Schwarz, C., Senjem, M. L., Tosakulwong, N., Duffy, J. R., Clark, H., Machulda, M. M., Petersen, R. C., Jack, C. R. J., Lowe, V. & Josephs, K. A., Feb 1 2018, In : Cortex. 99, p. 358-374 17 p.

Research output: Contribution to journalArticle

15 Scopus citations
6 Scopus citations
2017

Neurogenic orofacial weakness and speech in adults with dysarthria

Solomon, N. P., Makashay, M. J., Helou, L. B. & Clark, H., Jan 1 2017, In : American Journal of Speech-Language Pathology. 26, 3, p. 951-960 10 p.

Research output: Contribution to journalArticle

2 Scopus citations

Predicting clinical decline in progressive agrammatic aphasia and apraxia of speech

Whitwell, J. L., Weigand, S. D., Duffy, J. R., Clark, H., Strand, E. A., Machulda, M. M., Spychalla, A. J., Senjem, M. L., Jack, C. R. J. & Josephs, K. A., Nov 28 2017, In : Neurology. 89, 22, p. 2271-2279 9 p.

Research output: Contribution to journalArticle

8 Scopus citations

Temporal acoustic measures distinguish primary progressive apraxia of speech from primary progressive aphasia

Duffy, J. R., Hanley, H., Utianski, R., Clark, H., Strand, E., Josephs, K. A. & Whitwell, J. L., May 1 2017, In : Brain and Language. 168, p. 84-94 11 p.

Research output: Contribution to journalArticle

19 Scopus citations
2016

Tracking the development of agrammatic aphasia: A tensor-based morphometry study

Whitwell, J. L., Duffy, J. R., Machulda, M. M., Clark, H., Strand, E. A., Senjem, M. L., Gunter, J. L., Spychalla, A. J., Petersen, R. C., Jack, C. R. J. & Josephs, K. A., Mar 22 2016, (Accepted/In press) In : Cortex.

Research output: Contribution to journalArticle

7 Scopus citations
2015

Effects of age, sex, and body position on orofacial muscle tone in healthy adults

Dietsch, A. M., Clark, H. M., Steiner, J. N. & Solomon, N. P., Aug 1 2015, In : Journal of Speech, Language, and Hearing Research. 58, 4, p. 1145-1150 6 p.

Research output: Contribution to journalArticle

6 Scopus citations
28 Scopus citations
2014

Clinical and imaging characterization of progressive spastic dysarthria

Clark, H. M., Duffy, J. R., Whitwell, J. L., Ahlskog, J. E., Sorenson, E. J. & Josephs, K. A., Mar 1 2014, In : European Journal of Neurology. 21, 3, p. 368-376 9 p.

Research output: Contribution to journalArticle

8 Scopus citations

NMDA receptor encephalitis causing reversible caudate changes on MRI and PET imaging

Tobin, W. O., Strand, E. A., Clark, H. M., Lowe, V. J., Robertson, C. E. & Pittock, S. J., Jan 1 2014, In : Neurology: Clinical Practice. 4, 6, p. 470-473 4 p.

Research output: Contribution to journalArticle

10 Scopus citations

Perceptual and instrumental assessments of orofacial muscle tone in dysarthric and normal speakers

Dietsch, A. M., Solomon, N. P., Sharkey, L. A., Duffy, J. R., Strand, E. A. & Clark, H. M., Jan 1 2014, In : Journal of Rehabilitation Research and Development. 51, 7, p. 1127-1142 16 p.

Research output: Contribution to journalArticle

9 Scopus citations

The apraxia of speech rating scale: A tool for diagnosis and description of apraxia of speech

Strand, E. A., Duffy, J. R., Clark, H. M. & Josephs, K., Sep 1 2014, In : Journal of Communication Disorders. 51, p. 43-50 8 p.

Research output: Contribution to journalArticle

69 Scopus citations

Training Effects of the Effortful Swallow Under Three Exercise Conditions

Clark, H. & Shelton, N., Sep 28 2014, In : Dysphagia. 29, 5, p. 553-563 11 p.

Research output: Contribution to journalArticle

15 Scopus citations

Volumes of discrete sips from straws of varying internal diameters

Clark, H. M., Anderson, C. C. & Hietpas, F., Feb 2014, In : American journal of speech-language pathology. 23, 1, p. 84-89 6 p.

Research output: Contribution to journalArticle

1 Scopus citations
2013

Muscle isolations

Clark, H., Oct 1 2013, ASHA Leader, 18, 10 OCT.

Research output: Contribution to specialist publicationArticle

1 Scopus citations
2012

Age and sex differences in orofacial strength

Clark, H. M. & Solomon, N. P., Mar 1 2012, In : Dysphagia. 27, 1, p. 2-9 8 p.

Research output: Contribution to journalArticle

90 Scopus citations

Specificity of training in the lingual musculature

Clark, H. M., Apr 1 2012, In : Journal of Speech, Language, and Hearing Research. 55, 2, p. 657-667 11 p.

Research output: Contribution to journalArticle

33 Scopus citations
2010

Quantifying orofacial muscle stiffness using damped oscillation

Solomon, N. P. & Clark, H. M., Dec 1 2010, In : Journal of Medical Speech-Language Pathology. 18, 4, p. 120-124 5 p.

Research output: Contribution to journalArticle

5 Scopus citations

Submental muscle tissue compliance during relaxation, contraction, and after tone-modification interventions.

Clark, H. M. & Solomon, N. P., Nov 2010, In : Unknown Journal. 36, p. 6-15 10 p.

Research output: Contribution to journalArticle

2 Scopus citations
2009

Effects of directional exercise on lingual strength

Clark, H. M., O'Brien, K., Calleja, A. & Corrie, S. N., Aug 1 2009, In : Journal of Speech, Language, and Hearing Research. 52, 4, p. 1034-1047 14 p.

Research output: Contribution to journalArticle

57 Scopus citations

Evidence-based systematic review: Effects of neuromuscular electrical stimulation on swallowing and neural activation

Clark, H., Lazarus, C., Arvedson, J., Schooling, T. & Frymark, T., Jan 1 2009, In : American journal of speech-language pathology. 18, 4, p. 361-375 15 p.

Research output: Contribution to journalArticle

61 Scopus citations
2008

Assessment of orofacial strength in patients with dysarthria

Solomon, N. P., Clark, H. M., Makashay, M. J. & Newman, L. A., Dec 1 2008, In : Journal of Medical Speech-Language Pathology. 16, 4, p. 251-258 8 p.

Research output: Contribution to journalArticle

20 Scopus citations

The role of strength training in speech sound disorders

Clark, H. M., Nov 1 2008, In : Seminars in Speech and Language. 29, 4, p. 276-283 8 p.

Research output: Contribution to journalArticle

14 Scopus citations

Visuomotor tracking abilities of speakers with apraxia of speech or conduction aphasia

Robin, D. A., Jacks, A., Hageman, C., Clark, H. M. & Woodworth, G., Aug 1 2008, In : Brain and Language. 106, 2, p. 98-106 9 p.

Research output: Contribution to journalArticle

17 Scopus citations
2003

Relationships among subjective and objective measures of tongue strength and oral phase swallowing impairments

Clark, H. M., Henson, P. A., Barber, W. D., Stierwalt, J. A. G. & Sherrill, M., Feb 2003, In : American journal of speech-language pathology. 12, 1, p. 40-50 11 p.

Research output: Contribution to journalArticle

93 Scopus citations
2001

Motor control in children and adults during a non-speech oral task

Clark, H. M., Robin, D. A., McCullagh, G. & Schmidt, R. A., Jan 1 2001, In : Journal of Speech, Language, and Hearing Research. 44, 5, p. 1015-1025 11 p.

Research output: Contribution to journalArticle

19 Scopus citations
1998

Generalized motor programme and parameterization accuracy in apraxia of speech and conduction aphasia

Clark, H. M. & Robin, D. A., Jan 1 1998, In : Aphasiology. 12, 7-8, p. 699-713 15 p.

Research output: Contribution to journalArticle

32 Scopus citations