Psychology (Scholarly Publications): Recent submissions
Now showing items 401-420 of 466
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The Virtual Haptic Display: A device for exploring 2-D virtual shapes in the tactile modality
(Psychonomic Society, 2007)In order to understand better the processes involved in the perception of shape through touch, some element of control is required over the nature of the shape presented to the hand and the presentation timing. To that ... -
Behavioural evidence for task-dependent, 'what' versus 'where' processing within and across modalities
(The Psychonomic Society, 2008)Task-dependent information processing for the purpose of recognition or spatial perception is considered a principle common to all the main sensory modalities. Using a dual-task interference paradigm, we investigated the ... -
Dissociable mechanisms of cognitive control in human prefrontal cortex
(The American Physiological Society, 2007)Intelligent behavior depends on the ability to suppress inappropriate actions and resolve interference between competing responses. Recent clinical and neuroimaging evidence has demonstrated the involvement of prefrontal, ... -
Learning and memory deficits in ecstasy users and their neural correlates during a face-learning task
(Elsevier, 2009)It has been consistently shown that ecstasy users display impairments in learning and memory performance. In addition, working memory processing in ecstasy users has been shown to be associated with neural alterations in ... -
Increased ventral striatal BOLD activity during non-drug reward anticipation in cannabis users
(2010)Despite an increased understanding of the pharmacology and long-term cognitive effects of cannabis in humans, there has been no research to date examining its chronic effects upon reward processing in the brain. Motivational ... -
Loss of insight in frontotemporal dementia, corticobasal degeneration and progressive supranuclear palsy
(Oxford University Press, 2007)Loss of insight is one of the core features of frontal/behavioural variant frontotemporal dementia (FTD). FTD shares many clinical and pathological features with corticobasal degeneration (CBD) and progressive supranuclear ... -
Right hemispheric dominance of inhibitory control: an event-related fMRI study.
(National Academy of Science, 1999)Normal human behavior and cognition are reliant on a person?s ability to inhibit inappropriate thoughts, impulses, and actions. The temporal and spatial advantages of event-related functional MRI (fMRI) were exploited to ... -
A paramatric manipulation of central executive functioning
(Oxford University Press, 2000)The central executive is both an important and poorly understood construct that is invoked in current theoretical models of human cognition and in various dysexecutive clinical syndromes. We report a task designed to isolate ... -
Cue-induced cocaine craving: Neuroanatomical specificity for drug users and drug stimuli.
(American Psychiatric Publishing, 2000)OBJECTIVE: Cocaine-related cues have been hypothesized to perpetuate drug abuse by inducing a craving response that prompts drug-seeking behavior. However, the mechanisms, underlying neuroanatomy, and specificity of this ... -
Individual differences in error processing: A review and reanalysis of three event-related fMRI studies using the GO/NOGO task
(Oxford University Press, 2004)Three previous studies using the GO/NOGO task were examined to characterize the pattern of functional activation seen during error-related processing. The large sample size (n = 44) also allowed investigation of the influence ... -
Human functional neuroimaging of brain changes associated with practice
(Oxford University Press, 2005)The discovery that experience-driven changes in the human brain can occur from a neural to a cortical level throughout the lifespan has stimulated a proliferation of research into how neural function changes in response ... -
Neural mechanisms involved in error processing: A comparison of errors made with and without awareness
(Elsevier, 2005)The ability to detect an error in one's own performance and then to improve ongoing performance based on this error processing is critical for effective behaviour. In our event-related fMRI experiment, we show that explicit ... -
Deriving the optimal number of events for an event-related fMRI study based on the spatial extent of activation
(Elsevier, 2005)Event-related fMRI is a powerful tool for localising psychological functions to specific brain areas. However, the number of events required to produce stable activation maps is a poorly investigated and understood problem. ... -
Early visual sensory deficits as endophenotypes for schizophrenia: high-density electrical mapping in clinically unaffected first-degree relatives
(Amercian Medical Association, 2006) -
The role of right fronto-parietal cortex in cognitive control: Common activations for ?cues-to-action? and response inhibition.
(Hogrefe & Huber Publishers, 2006)Seemingly distinct cognitive tasks often activate similar anatomical networks. For example, the right fronto-parietal cortex is active across a wide variety of paradigms suggesting that these regions may subserve a general ... -
A validation of event-related FMRI comparisons between users of cocaine, nicotine, or cannabis and control subjects
(American Journal of Psychiatry, 2006)Noninvasive brain imaging techniques are a powerful tool for researching the effects of drug abuse on brain activation measures. However, because many drugs have direct vascular effects, the validity of techniques that ... -
Post-error behaviour in active cocaine users: poor awareness of errors in the presence of intact performance adjustments.
(Nature, 2007)Active cocaine abusers have a diminished neural response to errors, particularly in the anterior cingulate cortex thought critical to error processing. The inability to detect, or adjust performance following errors has ... -
Variance in neurocognitive performance is associated with dysbindin-1 in schizophrenia: A preliminary study
(Elsevier, 2007)Susceptibility genes for schizophrenia have been hypothesised to mediate liability for the disorder at least partly by influencing cognitive performance. We investigated the association between genotype and cognitive ... -
Patterns of normal human brain plasticity and their implications for neurorehabilitation.
(Elsevier, 2006)Patterns of normal human brain plasticity after practice and their implications for neurorehabilitation.
