Browsing by Author "JOHNSON, KATHERINE"
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Abnormal functional connectivity during visuospatial processing is associated with disrupted organisation of white matter in autism.
JOHNSON, KATHERINE; MCGRATH, JANE (2013)Disruption of structural and functional neural connectivity has been widely reported in Autism Spectrum Disorder (ASD) but there is a striking lack of research attempting to integrate analysis of functional and structural ... -
Dissociation in performance of children with ADHD and autism on a task of sustained attention
JOHNSON, KATHERINE; ROBERTSON, IAN; GALLAGHER, LOUISE; GILL, MICHAEL; BELLGROVE, MARK; FITZGERALD, MICHAEL (2007)Attention deficit hyperactivity disorder (ADHD) and autism are two neurodevelopmental disorders associated with prominent executive dysfunction, which may be underpinned by disruption within fronto-striatal and fronto-parietal ... -
Dissociation in response to methylphenidate on response variability in a group of medication naïve children with ADHD
JOHNSON, KATHERINE; ROBERTSON, IAN; GILL, MICHAEL; DAIBHIS, AOIFE; DALY, MICHAEL; FITZGERALD, MICHAEL (2008)Increased variability in reaction time (RT) has been proposed as a cardinal feature of attention deficit hyperactivity disorder (ADHD). Increased variability during sustained attention tasks may reflect inefficient ... -
fMRI activation during response inhibition and error processing: the role of the DAT1 gene in typically developing adolescents and those diagnosed with ADHD
JOHNSON, KATHERINE; BARRY, EDWINA; ROBERTSON, IAN; GARAVAN, HUGH; HAWI, ZIARIH; MULLIGAN, AISLING; GILL, MICHAEL (2011)The DAT1 gene codes for the dopamine transporter, which clears dopamine from the synaptic cleft, and a variant of this gene has previously been associated with compromised response inhibition in both healthy and clinical ... -
Functional developmental changes underlying response inhibition and error-detection processes
ROBERTSON, IAN; GARAVAN, HUGH; JOHNSON, KATHERINE (2009) -
Spatial attentional bias as a marker of genetic risk, symptom severity and stimulant response in ADHD.
JOHNSON, KATHERINE; ROBERTSON, IAN; HAWI, ZIARIH; GILL, MICHAEL; FITZGERALD, MICHAEL (2007)Attention-deficit hyperactivity disorder (ADHD) is a heritable childhood onset disorder that is marked by variability at multiple levels including clinical presentation, cognitive profile, and response to stimulant ...