J
John T. O'Brien
Researcher at University of Cambridge
Publications - 873
Citations - 73158
John T. O'Brien is an academic researcher from University of Cambridge. The author has contributed to research in topics: Dementia & Dementia with Lewy bodies. The author has an hindex of 121, co-authored 819 publications receiving 63242 citations. Previous affiliations of John T. O'Brien include Royal Melbourne Hospital & University of Western Australia.
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Impairments in attention and fluctuating attention distinguish between dementia with lewy bodies and Alzheimer's disease
Clive Ballard,Ian G. McKeith,G.A. Ayre,Alastair Gray,Francesca Cormack,Martin J. Tovée,John T. O'Brien,Matthew P. Walker +7 more
Cognitive impairments in elderly stroke patients without dementia: Profile and MRI correlates
Clive Ballard,Keith Wesnes,John T. O'Brien,Sally Stephens,Emma J. Burton,E Rowan,Raj N. Kalaria,Rose Anne Kenny +7 more
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Free water imaging of the cholinergic system in dementia with Lewy bodies and Alzheimer's disease.
Julia Schumacher,Nicola J. Ray,Calum A Hamilton,Maurizio Bergamino,Paul C. Donaghy,Michael J. Firbank,Rosie Watson,Gemma Roberts,Louise Allan,Nicola Barnett,John T. O'Brien,Alan J. Thomas,John B. Taylor +12 more
TL;DR: In this article , free water along the pedunculopontine nucleus (PPN) tract was increased only in DLB and related to visual hallucinations, whereas the PPN-thalamus pathway integrity might be related with visual hallucination.
Journal ArticleDOI
A rugged sliding vacuum seal for angular motion over a limited range
TL;DR: In this paper, the authors report the construction and successful testing of a sliding vacuum seal of novel design that is substantially more rugged than conventional sliding foil arrangements, fabricated from a stack of concentric aluminum sectors of graduated size.
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Progression of cerebral small vessel disease in healthy middle-aged adults associated with inherited risk of Alzheimer’s disease: The PREVENT-Dementia study
Audrey Low,Li Su,James D. Stefaniak,James D. Stefaniak,Elijah Mak,Maria-Eleni Dounavi,Karen Ritchie,Craig W. Ritchie,Hugh S. Markus,John T. O'Brien +9 more
TL;DR: The longitudinal change in SVD burden between cognitively healthy middle‐aged adults with and without genetic predisposition to AD, and their effect on cognitive decline are compared.