User profiles for R. Barker

Roger A Barker

University of Cambridge
Verified email at cam.ac.uk
Cited by 66137

Diagnostic criteria for mild cognitive impairment in Parkinson's disease: Movement Disorder Society Task Force guidelines

…, MC Rodriguez‐Oroz, DJ Burn, RA Barker… - Movement …, 2012 - Wiley Online Library
Mild cognitive impairment is common in nondemented Parkinson's disease (PD) patients and
may be a harbinger of dementia. In view of its importance, the Movement Disorder Society …

Evolution of cognitive dysfunction in an incident Parkinson's disease cohort

…, T Foltynie, CEG Brayne, TW Robbins, RA Barker - Brain, 2007 - academic.oup.com
We have previously performed detailed clinical and neuropsychological assessments in a
community-based cohort of patients with newly diagnosed parkinsonism, and through …

Neuropsychological and clinical heterogeneity of cognitive impairment and dementia in patients with Parkinson's disease

AA Kehagia, RA Barker, TW Robbins - The Lancet Neurology, 2010 - thelancet.com
Cognitive impairment in patients with Parkinson's disease is gaining increased clinical
significance owing to the relative success of therapeutic approaches to the motor symptoms of …

Rapid least‐squares inversion of apparent resistivity pseudosections by a quasi‐Newton method1

MH Loke, RD Barker - Geophysical prospecting, 1996 - earthdoc.org
… We have adopted the model used by Barker (1992), where the blocks are equal in number
to the data points in the apparent resistivity pseudosection and are arranged in a similar …

RNA velocity of single cells

…, Z Liu, D Van Bruggen, J Guo, X He, R Barker… - Nature, 2018 - nature.com
RNA abundance is a powerful indicator of the state of individual cells. Single-cell RNA
sequencing can reveal RNA abundance with high quantitative accuracy, sensitivity and …

Big school, small school: High school size and student behavior.

RG Barker, PV Gump - 1964 - psycnet.apa.org
How does school size, established by enrollment, affect the behavior and activities of its
students? A comprehensive study by Barker and Gump, utilizing schools of varying enrollments …

[HTML][HTML] Physical, cognitive, and mental health impacts of COVID-19 after hospitalisation (PHOSP-COVID): a UK multicentre, prospective cohort study

…, C Ballard, J Bambrough, RE Barker… - The Lancet …, 2021 - thelancet.com
Background The impact of COVID-19 on physical and mental health and employment after
hospitalisation with acute disease is not well understood. The aim of this study was to …

A functional role for adult hippocampal neurogenesis in spatial pattern separation

…, P Tyers, S Jessberger, LM Saksida, RA Barker… - Science, 2009 - science.org
The dentate gyrus (DG) of the mammalian hippocampus is hypothesized to mediate pattern
separation—the formation of distinct and orthogonal representations of mnemonic …

Midwest and the USA

RG Barker, HF Wright - 1954 - psycnet.apa.org
In their book Midwest and its children: The psychological ecology of an American town, the
authors describe the milieu, the psychological habitat, and the behavior of children in the …

A novel mechanism of insect resistance engineered into tobacco

VA Hilder, AMR Gatehouse, SE Sheerman, RF Barker… - Nature, 1987 - nature.com
A major goal of plant genetic engineering is the introduction of agronomically desirable
phenotypic traits into crop plants in situations where conventional breeding methods have been …