Sid E. O’Bryant

23.8k total citations · 5 hit papers
264 papers, 8.2k citations indexed

About

Sid E. O’Bryant is a scholar working on Psychiatry and Mental health, Physiology and Cognitive Neuroscience. According to data from OpenAlex, Sid E. O’Bryant has authored 264 papers receiving a total of 8.2k indexed citations (citations by other indexed papers that have themselves been cited), including 137 papers in Psychiatry and Mental health, 97 papers in Physiology and 37 papers in Cognitive Neuroscience. Recurrent topics in Sid E. O’Bryant's work include Dementia and Cognitive Impairment Research (127 papers), Alzheimer's disease research and treatments (90 papers) and Health, Environment, Cognitive Aging (21 papers). Sid E. O’Bryant is often cited by papers focused on Dementia and Cognitive Impairment Research (127 papers), Alzheimer's disease research and treatments (90 papers) and Health, Environment, Cognitive Aging (21 papers). Sid E. O’Bryant collaborates with scholars based in United States, United Kingdom and Sweden. Sid E. O’Bryant's co-authors include James Hall, Leigh Johnson, Gordon Gong, Melissa Edwards, Robert C. Barber, Harald Hampel, John A. Lucas, Valerie Hobson, Kaj Blennow and Neill R. Graff‐Radford and has published in prestigious journals such as Neuron, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Sid E. O’Bryant

249 papers receiving 8.0k citations

Hit Papers

Staging Dementia Using Clinical Dementia Rating Scale Sum... 2008 2026 2014 2020 2008 2008 2018 2018 2023 100 200 300 400 500
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Staging Dementia Using Clinical Dementia Rating Scale Sum of Boxes Scores
    2008 597 citations Sid E. O’Bryant Archives of Neurology profile →
  2. Detecting Dementia With the Mini-Mental State Examination in Highly Educated Individuals
    2008 518 citations Sid E. O’Bryant, Neill R. Graff‐Radford et al. Archives of Neurology profile →
  3. Blood-based biomarkers for Alzheimer disease: mapping the road to the clinic
    2018 464 citations Sid E. O’Bryant, Henrik Zetterberg et al. profile →
  4. Current state of Alzheimer’s fluid biomarkers
    2018 375 citations Michelle M. Mielke, Sid E. O’Bryant et al. profile →
  5. Blood-based biomarkers for Alzheimer’s disease: Current state and future use in a transformed global healthcare landscape
    2023 121 citations Sid E. O’Bryant et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Sid E. O’Bryant United States 44 3.5k 2.9k 1.4k 1.1k 938 264 8.2k
Raj C. Shah United States 44 3.3k 1.0× 3.0k 1.0× 1.1k 0.8× 1.1k 0.9× 842 0.9× 225 8.7k
Ozioma C. Okonkwo United States 54 3.8k 1.1× 2.8k 1.0× 935 0.7× 2.0k 1.8× 909 1.0× 229 9.1k
Denis A. Evans United States 49 4.1k 1.2× 3.4k 1.2× 1.1k 0.8× 1.1k 1.0× 1.2k 1.3× 88 9.9k
James D. Bowen United States 60 3.9k 1.1× 2.8k 0.9× 974 0.7× 832 0.7× 858 0.9× 193 11.1k
Brenda L. Plassman United States 52 4.7k 1.4× 2.6k 0.9× 795 0.6× 1.0k 0.9× 965 1.0× 200 11.7k
Nicola T. Lautenschlager Australia 52 4.7k 1.4× 3.2k 1.1× 795 0.6× 1.3k 1.2× 882 0.9× 279 10.5k
Craig Ritchie United Kingdom 44 2.4k 0.7× 2.9k 1.0× 1.1k 0.8× 691 0.6× 899 1.0× 210 7.7k
Victor W. Henderson United States 64 3.4k 1.0× 2.6k 0.9× 1.1k 0.8× 2.0k 1.8× 1.1k 1.2× 272 15.4k
Catherine Helmer France 55 3.2k 0.9× 2.6k 0.9× 646 0.5× 934 0.8× 895 1.0× 304 10.4k
Cassandra Szoeke Australia 46 4.3k 1.2× 4.2k 1.4× 1.0k 0.7× 1.6k 1.4× 1.1k 1.2× 166 9.6k

Countries citing papers authored by Sid E. O’Bryant

Since Specialization
Citations

This map shows the geographic impact of Sid E. O’Bryant's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Sid E. O’Bryant with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sid E. O’Bryant more than expected).

Fields of papers citing papers by Sid E. O’Bryant

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sid E. O’Bryant. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Sid E. O’Bryant. The network helps show where Sid E. O’Bryant may publish in the future.

Co-authorship network of co-authors of Sid E. O’Bryant

This figure shows the co-authorship network connecting the top 25 collaborators of Sid E. O’Bryant. A scholar is included among the top collaborators of Sid E. O’Bryant based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Sid E. O’Bryant. Sid E. O’Bryant is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Clark, Alexandra L., Alexandra J. Weigand, Julie K. Wisch, et al.. (2025). Psychosocial behavioral phenotypes of racially/ethnically minoritized older adults enrolled in HABS‐HD differ on neuroimaging measures of brain age gap, hippocampal volume, and cortical thickness. Alzheimer s & Dementia Translational Research & Clinical Interventions. 11(2). e70109–e70109.
2.
3.
Zhou, Zhengyang, et al.. (2025). Alzheimer's disease genetic risk: Top African American risk allele frequencies and genetic architecture among Mexican‐, African‐, and non‐Hispanic White Americans. Alzheimer s & Dementia Translational Research & Clinical Interventions. 11(2). e70124–e70124.
4.
Ramadass, Karthik, Kurt G. Schilling, Blake E. Dewey, et al.. (2025). Scalable quality control on processing of large diffusion-weighted and structural magnetic resonance imaging datasets. PLoS ONE. 20(8). e0327388–e0327388.
5.
Knell, Gregory, et al.. (2025). Alzheimer's disease plasma biomarkers and physical functioning in a diverse sample of adults. Alzheimer s & Dementia. 21(1). e14322–e14322. 1 indexed citations
6.
Leng, Yue, et al.. (2025). Racial and Ethnic and Sex Differences in At-Home Estimates of Obstructive Sleep Apnea Parameters Among Diverse Adults. Annals of the American Thoracic Society. 22(9). 1401–1408. 1 indexed citations
7.
8.
9.
Lah, James J., Monica W. Parker, Felicia C. Goldstein, et al.. (2024). Association between Medical Comorbidities and White Matter Hyperintensity Volume in Diverse Populations: A HABS‐HD Study. Alzheimer s & Dementia. 20(S2).
10.
11.
Bischof, Gérard N., Kathrin Giehl, Frank Jessen, et al.. (2024). Cortical Tau Aggregation Patterns Associated With Apraxia in Patients With Alzheimer Disease. Neurology. 103(12). e210062–e210062.
12.
Petersen, Melissa, Lisi Flores Aguilar, Elizabeth Head, et al.. (2024). Blood biomarkers in Down syndrome: Facilitating Alzheimer's disease detection and monitoring. Alzheimer s & Dementia. 21(1). e14364–e14364. 7 indexed citations
13.
14.
Boerwinkle, Anna H., Julie K. Wisch, Benjamin L. Handen, et al.. (2024). The mediating role of plasma glial fibrillary acidic protein in amyloid and tau pathology in Down's syndrome. Alzheimer s & Dementia. 21(1). e14359–e14359. 5 indexed citations
15.
Grasso, Stephanie M., et al.. (2023). Bilingual neurocognitive resiliency, vulnerability, and Alzheimer's disease biomarker correlates in Latino older adults enrolled in the Health and Aging Brain Study ‐ Health Disparities (HABS‐HD). Alzheimer s & Dementia Diagnosis Assessment & Disease Monitoring. 15(4). e12509–e12509. 2 indexed citations
16.
Zhou, Zhengyang, et al.. (2023). Top Alzheimer's disease risk allele frequencies differ in HABS‐HD Mexican‐ versus Non‐Hispanic White Americans. Alzheimer s & Dementia Diagnosis Assessment & Disease Monitoring. 15(4). e12518–e12518. 5 indexed citations
17.
Handen, Benjamin L., I. C. H. Clare, Charles M. Laymon, et al.. (2021). Acute Regression in Down Syndrome. Brain Sciences. 11(8). 1109–1109. 5 indexed citations
18.
O’Bryant, Sid E., Laura H. Lacritz, James Hall, et al.. (2010). Validation of the New Interpretive Guidelines for the Clinical Dementia Rating Scale Sum of Boxes Score in the National Alzheimer's Coordinating Center Database. Archives of Neurology. 67(6). 746–9. 213 indexed citations
19.
O’Bryant, Sid E. & Robert J. McCaffrey. (2006). Preliminary Findings on the Cross Cultural Test of Face Recognition. Applied Neuropsychology. 13(4). 223–229. 2 indexed citations
20.
O’Bryant, Sid E., Robin C. Hilsabeck, Jerid M. Fisher, & Robert J. McCaffrey. (2003). Utility of the Trail Making Test in the Assessment of Malingering in a Sample of Mild Traumatic Brain Injury Litigants. The Clinical Neuropsychologist. 17(1). 69–74. 34 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Raj C. Shah Breakdown of academic impact, for papers by Ozioma C. Okonkwo Breakdown of academic impact, for papers by Denis A. Evans Breakdown of academic impact, for papers by James D. Bowen Breakdown of academic impact, for papers by Brenda L. Plassman Breakdown of academic impact, for papers by Nicola T. Lautenschlager Breakdown of academic impact, for papers by Craig Ritchie Breakdown of academic impact, for papers by Victor W. Henderson Breakdown of academic impact, for papers by Catherine Helmer Breakdown of academic impact, for papers by Cassandra Szoeke
Rankless by CCL
2026