Investigations of the functional anatomy of attention using the stroop test
- C. Bench, C. Frith, P. Grasby, Karl J. Friston, R. Dolan
- Psychology, BiologyNeuropsychologia
- 1 September 1993
Meta-analysis, database, and meta-regression of 98 structural imaging studies in bipolar disorder.
- M. Kempton, J. Geddes, U. Ettinger, Steven C. R. Williams, P. Grasby
- PsychologyArchives of General Psychiatry
- 1 September 2008
The meta-analyses revealed robust but regionally nonspecific changes of brain structure in bipolar disorder and revealed individual studies will remain underpowered unless sample size is increased or improvements in phenotypic selection and imaging methods are made to reduce within-study heterogeneity.
Evidence for striatal dopamine release during a video game
Behaviour conditions under which dopamine is released in humans are shown for the first time, and the ability of positron emission tomography to detect neurotransmitter fluxes in vivo during manipulations of behaviour is illustrated.
Brain regions associated with acquisition and retrieval of verbal episodic memory
- T. Shallice, P. Fletcher, C. Frith, P. Grasby, R. Frackowiak, R. Dolan
- Psychology, BiologyNature
- 14 April 1994
The results provide clear evidence that episodic memory involves a network of specific prefrontal and posterior structures which can be fractionated into different component processes.
Contrasting Cortical and Subcortical Activations Produced by Attentional-Set Shifting and Reversal Learning in Humans
- R. Rogers, T. Andrews, P. Grasby, D. Brooks, T. Robbins
- Psychology, BiologyJournal of Cognitive Neuroscience
- 2000
It is proposed that the PFC may contribute to the control of attentional-set by modulating attentional processes mediated by occipito-temporal pathways in distinct cortical and subcortical neural stations.
A PET study of voluntary movement in schizophrenic patients experiencing passivity phenomena (delusions of alien control).
- S. Spence, D. Brooks, S. Hirsch, P. Liddle, J. Meehan, P. Grasby
- Psychology, MedicineBrain : a journal of neurology
- 1 November 1997
These hyperactive cerebral regions subserve attention to internal and external bodily space, and the attribution of significance to sensory information, they provide a plausible anatomical substrate for the misattribution of internally generated acts to external entities.
Elevated striatal dopamine function linked to prodromal signs of schizophrenia.
- O. Howes, A. Montgomery, P. Grasby
- Psychology, MedicineArchives of General Psychiatry
- 2009
Findings indicate that dopamine overactivity predates the onset of schizophrenia in individuals with prodromal psychotic symptoms, is predominantly localized in the associative striatum, and is correlated with the severity of symptoms and neurocognitive dysfunction.
A fronto-parietal network for rapid visual information processing: a PET study of sustained attention and working memory
- J. Coull, C. Frith, R. Frackowiak, P. Grasby
- Psychology, BiologyNeuropsychologia
- 1 November 1996
Brain systems for encoding and retrieval of auditory-verbal memory. An in vivo study in humans.
- P. Fletcher, C. Frith, P. Grasby, T. Shallice, R. Frackowiak, R. Dolan
- Psychology, BiologyBrain : a journal of neurology
- 1 April 1995
The results of this study indicate that separate brain systems are engaged during the encoding and retrieval phases of episodic auditory-verbal memory, and engage a different, but overlapping, system to that engaged by retrieval from semantic memory.
Tracer Kinetic Modeling of the 5-HT1AReceptor Ligand [carbonyl-11C]WAY-100635 for PET
- R. Gunn, P. Sargent, A. Lammertsma
- BiologyNeuroImage
- 1 November 1998
It is concluded that a simplified reference tissue approach may be used to quantify 5-HT1A binding either in terms of ROI data or as parametric images.
...
...