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  • The COMT Val108/158Met Polymorphism and Medial Temporal Lobe Volumetry in Patients with Schizophrenia and Healthy Adults.
    We measured the effects of COMT Val108/158Met genotype on the volume of two regions within the medial temporal lobe, the amygdala an...
    Neuroimage : (2009)
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  • Handedness is related to formal thought disorder and language dysfunction in schizophrenia
    The handedness of 29 schizophrenics, 42 manic-depressives, and 25 normal controls was examined in relation to formal thought disorder...
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  • Cognitive deficits in recent-onset and chronic schizophrenia.
    We report results of a cross-sectional study of cognitive deficits early and late in the course of schizophrenia carried out at four...
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  • Reduced overnight consolidation of procedural learning in chronic medicated schizophrenia is related to specific sleep stages.
    We previously reported that patients with schizophrenia failed to demonstrate normal sleep-dependent improvement in motor procedural...
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  • Dysregulation of working memory and default-mode networks in schizophrenia using independent component analysis, an fBIRN and MCIC study
    We applied ICA to an fMRI dataset for 115 patients with chronic schizophrenia and 130 healthy controls by performing the Sternberg I...
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  • Hemispheric differences in amygdala contributions to response monitoring.
    We assessed error-related activation in these regions and its relation to task performance using functional MRI and a saccadic parad...
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  • Body expressions of emotion do not trigger fear contagion in autism spectrum disorder
    We examined whether such deficits extend to the perception of bodily expressed emotions. We found that individuals with ASD, in cont...
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  • Brain-performance correlates of working memory retrieval in schizophrenia: a cognitive modeling approach.
    Correlations of cognitive functioning with brain activation during a sternberg item recognition paradigm (SIRP) were investigated in...
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  • Working memory and DLPFC inefficiency in schizophrenia: the FBIRN study.
    Subjects with schizophrenia performed slightly but significantly worse than the healthy volunteers and showed a greater decrease in...
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  • Does abnormal sleep impair memory consolidation in schizophrenia?
    We conclude that these sleep-dependent impairments may contribute substantially to generalized cognitive deficits in schizophrenia....
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  • MTHFR 677C --> T genotype disrupts prefrontal function in schizophrenia through an interaction with COMT 158Val --> Met.
    We found that the hypofunctional 677T variant was associated with decreased working memory load-dependent activation in the prefront...
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  • MTHFR 677C → T genotype disrupts prefrontal function in schizophrenia through an interaction with COMT 158Val → Met
    We found that the hypofunctional 677T variant was associated with decreased working memory load-dependent activation in the prefront...
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  • Response monitoring, repetitive behaviour and anterior cingulate abnormalities in autism spectrum disorders (ASD).
    We investigated whether ACC structure and function during response monitoring were associated with repetitive behaviour in ASD. We c...
    Brain 131:2464 (2008)
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  • A non-invasive method to relate the timing of neural activity to white matter microstructural integrity.
    We describe a method to identify white matter pathways that may contribute to inter-individual variability in the timing of neural a...
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  • Reduced error-related activation in two anterior cingulate circuits is related to impaired performance in schizophrenia.
    Our findings demonstrate a blunted response to error commission that is associated with worse performance in two ACC circuits in sch...
    Brain 131:971 (2008)
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  • The relation between antisaccade errors, fixation stability and prosaccade errors in schizophrenia.
    We investigated whether antisaccade errors were related to difficulty in inhibiting saccades when subjects were asked to maintain st...
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  • Investigations of face expertise in the social developmental disorders.
    One group of subjects with SDD with normal famous face recognition had only a mild reduction in accuracy and a normal pattern of inv...
    Neurology 69:860 (2007)
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  • Reduced microstructural integrity of the white matter underlying anterior cingulate cortex is associated with increased saccadic latency in schizophrenia.
    We examined the white matter underlying anterior cingulate cortex in schizophrenia to determine whether reduced FA is associated wit...
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  • Task-switching in schizophrenia: active switching costs and passive carry-over effects in an antisaccade paradigm.
    We assessed the costs of both (1) an active reconfiguration process that was triggered by the cue, and (2) passive carry-over effect...
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  • Where left becomes right: a magnetoencephalographic study of sensorimotor transformation for antisaccades.
    We studied both of these regions simultaneously using magnetoencephalography (MEG). Nineteen healthy participants performed a pseudo...
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