Roger A Barker
Roger A Barker
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TitleCited byYear
Diagnostic criteria for mild cognitive impairment in Parkinson's disease: Movement Disorder Society Task Force guidelines
I Litvan, JG Goldman, AI Tröster, BA Schmand, D Weintraub, RC Petersen, ...
Movement disorders 27 (3), 349-356, 2012
A functional role for adult hippocampal neurogenesis in spatial pattern separation
CD Clelland, M Choi, C Romberg, GD Clemenson, A Fragniere, P Tyers, ...
Science 325 (5937), 210-213, 2009
Enhanced or impaired cognitive function in Parkinson's disease as a function of dopaminergic medication and task demands
R Cools, RA Barker, BJ Sahakian, TW Robbins
Cerebral cortex 11 (12), 1136-1143, 2001
Evolution of cognitive dysfunction in an incident Parkinson's disease cohort
CH Williams-Gray, T Foltynie, CEG Brayne, TW Robbins, RA Barker
Brain 130 (7), 1787-1798, 2007
Neuropsychological and clinical heterogeneity of cognitive impairment and dementia in patients with Parkinson's disease
AA Kehagia, RA Barker, TW Robbins
The Lancet Neurology 9 (12), 1200-1213, 2010
The cognitive ability of an incident cohort of Parkinson’s patients in the UK. The CamPaIGN study
T Foltynie, CEG Brayne, TW Robbins, RA Barker
Brain 127 (3), 550-560, 2004
The distinct cognitive syndromes of Parkinson's disease: 5 year follow-up of the CamPaIGN cohort
CH Williams-Gray, JR Evans, A Goris, T Foltynie, M Ban, TW Robbins, ...
Brain 132 (11), 2958-2969, 2009
Mild cognitive impairment in Parkinson disease: a multicenter pooled analysis
D Aarsland, K Bronnick, C Williams-Gray, D Weintraub, K Marder, ...
Neurology 75 (12), 1062-1069, 2010
Cognitive impairments in early Parkinson's disease are accompanied by reductions in activity in frontostriatal neural circuitry
SJG Lewis, A Dove, TW Robbins, RA Barker, AM Owen
Journal of Neuroscience 23 (15), 6351-6356, 2003
L-Dopa medication remediates cognitive inflexibility, but increases impulsivity in patients with Parkinson’s disease
R Cools, RA Barker, BJ Sahakian, TW Robbins
Neuropsychologia 41 (11), 1431-1441, 2003
Heterogeneity of Parkinson’s disease in the early clinical stages using a data driven approach
SJG Lewis, T Foltynie, AD Blackwell, TW Robbins, AM Owen, RA Barker
Journal of Neurology, Neurosurgery & Psychiatry 76 (3), 343-348, 2005
Dopaminergic modulation of high‐level cognition in Parkinson’s disease: the role of the prefrontal cortex revealed by PET
R Cools, E Stefanova, RA Barker, TW Robbins, AM Owen
Brain 125 (3), 584-594, 2002
Neural transplantation for the treatment of Parkinson's disease
A Björklund, SB Dunnett, P Brundin, AJ Stoessl, CR Freed, RE Breeze, ...
The Lancet Neurology 2 (7), 437-445, 2003
Mechanisms of cognitive set flexibility in Parkinson's disease
R Cools, RA Barker, BJ Sahakian, TW Robbins
Brain 124 (12), 2503-2512, 2001
Microglial activation correlates with severity in Huntington disease: a clinical and PET study
N Pavese, A Gerhard, YF Tai, AK Ho, F Turkheimer, RA Barker, DJ Brooks, ...
Neurology 66 (11), 1638-1643, 2006
Disintegration of the sleep-wake cycle and circadian timing in Huntington's disease
AJ Morton, NI Wood, MH Hastings, C Hurelbrink, RA Barker, ES Maywood
Journal of Neuroscience 25 (1), 157-163, 2005
Long-term safety and tolerability of ProSavin, a lentiviral vector-based gene therapy for Parkinson's disease: a dose escalation, open-label, phase 1/2 trial
S Palfi, JM Gurruchaga, GS Ralph, H Lepetit, S Lavisse, PC Buttery, ...
The Lancet 383 (9923), 1138-1146, 2014
The CamPaIGN study of Parkinson's disease: 10-year outlook in an incident population-based cohort
CH Williams-Gray, SL Mason, JR Evans, T Foltynie, C Brayne, ...
J Neurol Neurosurg Psychiatry 84 (11), 1258-1264, 2013
Microglial activation in presymptomatic Huntington's disease gene carriers
YF Tai, N Pavese, A Gerhard, SJ Tabrizi, RA Barker, DJ Brooks, P Piccini
Brain 130 (7), 1759-1766, 2007
Dopaminergic basis for deficits in working memory but not attentional set-shifting in Parkinson's disease
SJG Lewis, A Slabosz, TW Robbins, RA Barker, AM Owen
Neuropsychologia 43 (6), 823-832, 2005
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