World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
73
Citations
36185
World Ranking
19530
National Ranking
9723

Research.com Recognitions

  • 1997 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Ronald G. Thomas is affiliated with the University of California, San Diego in the United States. Their research focuses broadly within the field of Medicine, with multiple contributions to Psychiatry and Mental Health, Physiology, Cognitive Neuroscience, Neurology, and Radiology, Nuclear Medicine, and Imaging.

The scientist's work covers a range of main topics including:

  • Dementia and Cognitive Impairment Research
  • Alzheimer's disease research and treatments
  • Functional Brain Connectivity Studies
  • Advanced Neuroimaging Techniques and Applications
  • Frailty in Older Adults
  • Sleep and related disorders
  • Cholinesterase and Neurodegenerative Diseases

Notable recent papers featuring Ronald G. Thomas include:

  • Spread of pathological tau proteins through communicating neurons in human Alzheimer's disease (2020, Nature Communications)
  • A trial of gantenerumab or solanezumab in dominantly inherited Alzheimer's disease (2021, Nature Medicine)
  • Functional brain architecture is associated with the rate of tau accumulation in Alzheimer's disease (2020, Nature Communications)
  • In vivo staging of regional amyloid deposition (2022, Columbia Academic Commons - Columbia University)
  • Characterizing Heterogeneity in Neuroimaging, Cognition, Clinical Symptoms, and Genetics Among Patients With Late-Life Depression (2022, JAMA Psychiatry)

Frequent co-authors collaborating with Ronald G. Thomas include:

  • John C. Morris
  • Eric M. Reiman
  • Michael Donohue
  • Kewei Chen
  • Erin Householder

The scientist has published regularly in various venues. The most frequent publication outlets are:

  • Alzheimer's & Dementia
  • Scientific Reports
  • Nature Communications
  • GeroScience
  • bioRxiv (Cold Spring Harbor Laboratory)

Ronald G. Thomas has received recognition as a Fellow of the American Association for the Advancement of Science (AAAS), awarded in 1997.

Best Publications

  • A controlled trial of selegiline, alpha-tocopherol, or both as treatment for Alzheimer's disease. The Alzheimer's Disease Cooperative Study

    Mary Sano;Christopher Ernesto;Ronald G. Thomas;Melville R. Klauber

  • Vitamin E and Donepezil for the Treatment of Mild Cognitive Impairment

    Ronald C. Petersen;Ronald G. Thomas;Michael Grundman;David Bennett

  • Phase 3 Trials of Solanezumab for Mild-to-Moderate Alzheimer's Disease

    RS Rachelle S. Doody;RG Ronald G. Rg Thomas;Martin Farlow;Takeshi Iwatsubo

  • Length of clinical trials of dementia drugs : Position paper from the international working group on harmonization of dementia drug guidelines

    Douglas Galasko;David Bennett;Mary Sano;Chris Ernesto

  • A Phase 3 Trial of Semagacestat for Treatment of Alzheimer's Disease

    Rachelle S. Doody;Rema Raman;Martin Farlow;Takeshi Iwatsubo

  • Estrogen Replacement Therapy for Treatment of Mild to Moderate Alzheimer Disease: A Randomized Controlled Trial

    R. A. Mulnard;C. W. Cotman;C. Kawas;C. H. Van Dyck

  • Mild cognitive impairment can be distinguished from Alzheimer disease and normal aging for clinical trials.

    Michael Grundman;Ronald C. Petersen;Steven H. Ferris;Ronald G. Thomas

  • Effects of Rofecoxib or Naproxen vs Placebo on Alzheimer Disease Progression: A Randomized Controlled Trial

    Paul S. Aisen;Kimberly A. Schafer;Michael Grundman;Eric Pfeiffer

  • Early role of vascular dysregulation on late-onset Alzheimer’s disease based on multifactorial data-driven analysis

    Y. Iturria-Medina;R. C. Sotero;P. J. Toussaint;J. M. Mateos-Pérez

  • Docosahexaenoic acid supplementation and cognitive decline in Alzheimer disease: a randomized trial.

    Joseph F. Quinn;Rema Raman;Ronald G. Thomas;Karin Yurko-Mauro

  • Angiographic and clinical predictors of acute closure after native vessel coronary angioplasty

    Stephen Ellis;G. S. Roubin;S. B. King;J. S. Douglas

  • The Preclinical Alzheimer Cognitive Composite Measuring Amyloid-Related Decline

    Michael C. Donohue;Reisa A. Sperling;David P. Salmon;Dorene M. Rentz

  • Reduction of Nightmares and Other PTSD Symptoms in Combat Veterans by Prazosin: A Placebo-Controlled Study

    Murray A. Raskind;Elaine R. Peskind;Evan D. Kanter;Eric C. Petrie

  • A randomized, double-blind, placebo-controlled trial of resveratrol for Alzheimer disease

    R. Scott Turner;Ronald G. Thomas;Suzanne Craft;Christopher H. van Dyck

  • Effect of dimebon on cognition, activities of daily living, behaviour, and global function in patients with mild-to-moderate Alzheimer's disease: a randomised, double-blind, placebo-controlled study

    Rachelle S Doody;Svetlana I Gavrilova;Mary Sano;Ronald G Thomas

  • Validity and reliability of the Alzheimer's Disease Cooperative Study–Clinical Global Impression of Change.

    Lon S. Schneider;Jason T. Olin;Rachelle S. Doody;Christopher M. Clark

  • High-Dose B Vitamin Supplementation and Cognitive Decline in Alzheimer Disease: A Randomized Controlled Trial

    Paul S. Aisen;Lon S. Schneider;Mary Sano;Ramon Diaz-Arrastia

  • The psychosocial impact of macular degeneration.

    Rebecca A. Williams;Barbara L. Brody;Ronald G. Thomas;Robert M. Kaplan

  • A randomized controlled trial of prednisone in Alzheimer’s disease

    Paul S. Aisen;K. L. Davis;J. D. Berg;K. Schafer

  • High Cerebrospinal Fluid Tau and Low Amyloid β42 Levels in the Clinical Diagnosis of Alzheimer Disease and Relation to Apolipoprotein E Genotype

    D. Galasko;L. Chang;R. Motter;C. M. Clark

Frequent Co-Authors

Paul S. Aisen
Paul S. Aisen University of Southern California
Mary Sano
Mary Sano Icahn School of Medicine at Mount Sinai
Lon S. Schneider
Lon S. Schneider University of Southern California
Pierre N. Tariot
Pierre N. Tariot University of Rochester
Leon J. Thal
Leon J. Thal University of California, San Diego
Ronald C. Petersen
Ronald C. Petersen University of Pennsylvania
Rachelle S. Doody
Rachelle S. Doody Roche (Switzerland)
Clifford R. Jack
Clifford R. Jack Mayo Clinic
Douglas Galasko
Douglas Galasko University of California, San Diego

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Exploring medicine in the USA opens doors to various online degrees and fast-tracked career options in healthcare. For nursing professionals looking to advance quickly, there are shortest dnp programs online designed to help you earn your Doctor of Nursing Practice degree efficiently, without compromising on quality.

If you’re seeking alternatives rated by ease and duration, explore the shortest dnp program choices, which have streamlined courses and flexible formats to suit working nurses. Those beginning their nursing journey can benefit from fast track lpn programs online, which allow students to achieve their Licensed Practical Nurse credentials at an accelerated pace.

For those interested in mental health, specialized options like psych np online programs make it possible to earn a Master of Science in Nursing degree with a focus on psychiatric care more quickly than traditional programs. These online pathways offer flexibility, efficiency, and a direct route into high-demand medical careers.

Best Scientists Citing Ronald G. Thomas

Trending Scientists