John T. O’Brien

92.1k citations
804 papers · 46.7k · 12 hit papers · h-index 110

Impact in

  • Psychiatry and Mental health top 0.01%
    • Dementia and Cognitive Impairment Research
  • Neurology top 0.02%
    • Parkinson's Disease Mechanisms and Treatments
    • Neurological Disease Mechanisms and Treatments
    • Neurological disorders and treatments
    • Neuroinflammation and Neurodegeneration Mechanisms

Papers in

Co-authors
Ian G. McKeith (137 shared papers)Alan Thomas (137 shared papers)Clive Ballard (93 shared papers)Michael Firbank (141 shared papers)David J. Burn (69 shared papers)Philip Scheltens (38 shared papers)Sean J. Colloby (66 shared papers)John‐Paul Taylor (116 shared papers)
Journals
International Journal of Geriatric Psychiatry (69 papers)Alzheimer s & Dementia (32 papers)Neurology (32 papers)International Psychogeriatrics (31 papers)Journal of Neurology Neurosurgery & Psychiatry (30 papers)
Partner nations
United KingdomUnited StatesAustralia

In The Last Decade

John T. O’Brien

780 papers receiving 45.4k citations

John T. O’Brien's Hit Papers

Differential levels of plasma biomarkers of neurodegeneration in Lewy body dementia, Alzheimer’s disease, frontotemporal dementia and progressive supranuclear palsy 2022 · 120 citations
1200+12+24Years since publication10002.0k3.0k
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

  • it has ≥500 total citations;
  • it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
  • it reaches the top citation threshold in at least one of its specific research topics.
  1. 2022 Journal of Neurology Neurosurgery & Psychiatry
  2. 2022 Nature Neuroscience
  3. 2019 Ageing Research Reviews
  4. 2019 European Journal of Epidemiology
  5. 2015 The Lancet
  6. 2014 International Journal of Stroke
  7. 2014 Alzheimer Disease & Associated Disorders
  8. 2013 Psychological Medicine
  9. 2007 The Lancet Neurology
  10. 2006 Stroke
  11. 2003 The Lancet Neurology
  12. 1989 Critical Reviews in Food Science and Nutrition

Peers

John T. O’Brien
Comparison fields: 5 of 219
  • Psychiatry and Mental health 14.7k
  • Neurology 6.4k
  • Neurology 9.4k
  • Biological Psychiatry 1.3k
  • Physiology 8.8k
Replace Monique M.B. Breteler with:
Monique M.B. Breteler Netherlands
Albert Hofman Netherlands
Richard Mayeux United States
Steven T. DeKosky United States
Yaakov Stern United States
Carol Brayne United Kingdom
Julie A. Schneider United States
Serge Gauthier Canada
David A. Bennett United States
Martin N. Rossor United Kingdom
John T. O’Brien relative to Monique M.B. Breteler Netherlands Monique M.B. Breteler's profile →
Citations per field
00.5×1.5×
Monique M.B. Breteler · 1×
Citations per year

Countries citing papers authored by John T. O’Brien

Since Specialization
Citations

This map shows the geographic impact of John T. O’Brien'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 John T. O’Brien with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John T. O’Brien more than expected).

Fields of papers citing papers by John T. O’Brien

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John T. O’Brien. 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 John T. O’Brien. The network helps show where John T. O’Brien may publish in the future.

Co-authors

The 25 scholars most cited alongside John T. O’Brien, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with John T. O’Brien Line = papers co-authored together John T. O’Brien links everyone, so they are left out of the graph.

All Works

20 of 20 papers shown

Showing the 20 most-cited of 804 papers — load more, or switch the sort, to bring in the rest.

#Work
1
Research criteria for the diagnosis of Alzheimer's disease: revising the NINCDS–ADRDA criteria
The Lancet Neurology ·Bruno Dubois, Howard Feldman, Claudia Jacova, Steven T. DeKosky, Pascale Barberger‐Gateau, Jeffrey L. Cummings, André Delacourte, Douglas Galasko, Serge Gauthier, Gregory A. Jicha, Kenichi Meguro, John T. O’Brien, Florence Pasquier, Philippe Robert, Martin N. Rossor, Steven Salloway, Yaakov Stern, Pieter Jelle Visser, Philip Scheltens
Hit paper breakdown →		20073199
2
Vascular cognitive impairment
The Lancet Neurology ·John T. O’Brien, Timo Erkinjuntti, ‌Barry Reisberg, Gustavo C. Román, Tohru Sawada, Leonardo Pantoni, John V. Bowler, Clive Ballard, Charles DeCarli, Philip B. Gorelick, Kenneth Rockwood, Alistair Burns, Serge Gauthier, Steven T. DeKosky
Hit paper breakdown →		2003866
3
Vascular dementia
The Lancet ·John T. O’Brien, Alan Thomas
Hit paper breakdown →		2015790
4
Diagnostic Criteria for Vascular Cognitive Disorders
Alzheimer Disease & Associated Disorders ·Perminder S. Sachdev, Raj N. Kalaria, John T. O’Brien, Ingmar Skoog, Suvarna Alladi, Sandra E. Black, Deborah Blacker, Dan G. Blazer, Christopher Chen, Helena C. Chui, Mary Ganguli, K. A. Jellinger, Dilip V. Jeste, Florence Pasquier, Jane S. Paulsen, Niels D. Prins, Kenneth Rockwood, Gustavo C. Román, Philip Scheltens
Hit paper breakdown →		2014562
5
White Matter Lesions in an Unselected Cohort of the Elderly
Stroke ·Malee Fernando, Julie E. Simpson, Fiona E. Matthews, Carol Brayne, Claire E. Lewis, Robert Barber, Raj N. Kalaria, Gill Forster, Filomena Esteves, Stephen B. Wharton, Pamela J. Shaw, John T. O’Brien, Paul G. Ince
Hit paper breakdown →		2006469
6
Dementia with Lewy bodies
The Lancet Neurology ·Ian G. McKeith, Jacobo Mintzer, Dag Aarsland, David J. Burn, Helen Chiu, Jiska Cohen‐Mansfield, Dennis W. Dickson, Bruno Dubois, John E. Duda, Howard Feldman, Serge Gauthier, Glenda M. Halliday, Brian Lawlor, Carol F. Lippa, Oscar L. López, João Carlos Machado, John T. O’Brien, Jeremy Playfer
2003465
7
Vascular Cognitive Impairment
International Journal of Stroke ·John T. O’Brien, Timo Erkinjuntti, ‌Barry Reisberg, Gustavo C. Román, Tohru Sawada, Leonardo Pantoni, John V. Bowler, Clive Ballard, Charles DeCarli, Philip B. Gorelick, Kenneth Rockwood, Alistair Burns, Serge Gauthier, Steven T. DeKosky
Hit paper breakdown →		2014441
8
Sensitivity and specificity of dopamine transporter imaging with 123I-FP-CIT SPECT in dementia with Lewy bodies: a phase III, multicentre study
The Lancet Neurology ·Ian G. McKeith, John T. O’Brien, Zuzana Walker, Klaus Tatsch, Jan Booij, Jacques Darcourt, Alessandro Padovani, Raffaele Giubbini, Ubaldo Bonuccelli, Duccio Volterrani, Clive Holmes, P. M. Kemp, Naji Tabet, Ines Meyer, Cornelia Reininger
2007423
9
Impact of Age-Related Cerebral White Matter Changes on the Transition to Disability – The LADIS Study: Rationale, Design and Methodology
Neuroepidemiology ·Leonardo Pantoni, Anna Basile, Giovanni Pracucci, Kjell Asplund, Julien Bogousslavsky, Hugues Chabriat, Timo Erkinjuntti, Franz Fazekas, José M. Ferro, Michael G. Hennerici, John T. O’Brien, Philip Scheltens, Marieke C. Visser, Lars‐Olof Wahlund, Gunhild Waldemar, Anders Wallin, Domenico Inzitari
2004367
10
Nutritional and toxicological aspects of the Maillard browning reaction in foods
Critical Reviews in Food Science and Nutrition ·John T. O’Brien, P.A. Morrissey, Jennifer M. Ames
Hit paper breakdown →		1989365
11
The prevalence and incidence of dementia with Lewy bodies: a systematic review of population and clinical studies
Psychological Medicine ·Simon Vann Jones, John T. O’Brien
Hit paper breakdown →		2013359
12
EFNS guidelines for the diagnosis and management of Alzheimer’s disease
European Journal of Neurology ·Jakub Hort, John T. O’Brien, Guido Gainotti, Tuula Pirttilä, Bogdan Ovidiu Popescu, Irena Rektorová, Sandro Sorbi, Philip Scheltens, (unknown)
2010355
13
A comprehensive study of gray matter loss in patients with Alzheimer’s disease using optimized voxel-based morphometry
NeuroImage ·Giorgos B. Karas, Emma J. Burton, Serge A.R.B. Rombouts, Ronald A. van Schijndel, John T. O’Brien, Philip Scheltens, Ian G. McKeith, David Williams, Clive Ballard, Frederik Barkhof
2003340
14
Prospective validation of Consensus criteria for the diagnosis of dementia with Lewy bodies
Neurology ·Ian G. McKeith, Clive Ballard, Robert H. Perry, Paul G. Ince, John T. O’Brien, D. W. Neill, K. Lowery, Evelyn Jaros, Robert Barber, Paul M. Thompson, Alan Swann, Andrew Fairbairn, Elaine K. Perry
2000337
15
Characterizing mild cognitive impairment in incident Parkinson disease
Neurology ·Alison J. Yarnall, David P. Breen, Gordon W. Duncan, Tien K. Khoo, Shirley Coleman, Michael Firbank, Cristina Nombela, Sophie Winder‐Rhodes, Jonathan Evans, James B. Rowe, Brit Mollenhauer, Niels Kruse, Gavin Hudson, Patrick F. Chinnery, John T. O’Brien, Trevor W. Robbins, Keith Wesnes, David J. Brooks, Roger A. Barker, David J. Burn
2013335
16
A Longitudinal Study of Hippocampal Volume, Cortisol Levels, and Cognition in Older Depressed Subjects
American Journal of Psychiatry ·John T. O’Brien
2004330
17
White matter lesions on magnetic resonance imaging in dementia with Lewy bodies, Alzheimer's disease, vascular dementia, and normal aging
Journal of Neurology Neurosurgery & Psychiatry ·Robert Barber, Philip Scheltens, A. Gholkar, Clive Ballard, Ian G. McKeith, Paul G. Ince, Robert Perry, John T. O’Brien
1999325
18
The spectrum of nonmotor symptoms in early Parkinson disease
Neurology ·Tien K. Khoo, Alison J. Yarnall, Gordon W. Duncan, Shirley Coleman, John T. O’Brien, David J. Brooks, Roger A. Barker, David J. Burn
2013325
19
A Review of Acrylamide: An Industry Perspective on Research, Analysis, Formation, and Control
Critical Reviews in Food Science and Nutrition ·Dominique Taeymans, J. F. Wood, Peter Ashby, Imre Blank, Alfred Studer, Richard H. Stadler, Pierre Gondé, Paul van Eijck, Sam P.D. Lalljie, Hans Lingnert, Marianne Lindblom, Reinhard Matissek, D Müller, Dan Tallmadge, John T. O’Brien, Sara Thompson, David Silvani, Tricia Whitmore
2004323
20
Association of gait and balance disorders with age-related white matter changes
Neurology ·Hansjörg Bäezner, Christian Blahak, Anna Poggesi, Leonardo Pantoni, Domenico Inzitari, Hugues Chabriat, Timo Erkinjuntti, Franz Fazekas, José M. Ferro, Peter Langhorne, John T. O’Brien, Philip Scheltens, Marieke C. Visser, Lars‐Olof Wahlund, Gunhild Waldemar, Anders Wallin, Michael G. Hennerici
2008311

About John T. O’Brien

John T. O’Brien is a scholar working on Psychiatry and Mental health, Physiology, Neurology, Cognitive Neuroscience and Neurology, having authored 804 papers that have together received 46.7k indexed citations. Recurring topics across this work include Dementia and Cognitive Impairment Research (265 papers), Alzheimer's disease research and treatments (109 papers), Parkinson's Disease Mechanisms and Treatments (83 papers), Functional Brain Connectivity Studies (72 papers), Advanced Neuroimaging Techniques and Applications (58 papers), Neurological Disease Mechanisms and Treatments (47 papers), Neuroinflammation and Neurodegeneration Mechanisms (26 papers) and Advanced MRI Techniques and Applications (24 papers). The work is most often cited by research in Psychiatry and Mental health (14.7k citations), Neurology (6.4k citations), Neurology (9.4k citations), Biological Psychiatry (1.3k citations) and Physiology (8.8k citations). John T. O’Brien has collaborated with scholars based in United Kingdom, United States and Australia. Frequent co-authors include Ian G. McKeith, Alan Thomas, Clive Ballard, Michael Firbank, David J. Burn, Philip Scheltens, Sean J. Colloby, John‐Paul Taylor, Emma J. Burton and Robert Barber. Their work appears in journals such as International Journal of Geriatric Psychiatry, Alzheimer s & Dementia, Neurology, International Psychogeriatrics and Journal of Neurology Neurosurgery & Psychiatry.

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.

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