S S Shergill

..The authors test the hypothesis that patients with schizophrenia have defects in their ability to predict the sensory consequences of their actions...

..This study investigated the functional neuroanatomy of inner speech and auditory verbal imagery in schizophrenic patients predisposed to auditory hallucinations...

..Modality specific activation in the right temporal cortex may have reflected the involvement of this region in auditory-verbal processing...

..This study used diffusion tensor imaging to examine the integrity of the major white matter fasciculi, which connects the frontal and temporal-parietal cortices, and the corpus callosum in patients with schizophrenia...

..This supports the hypothesis that during hallucinations activation in cortical regions mediating the generation of inner speech may precede the engagement of areas implicated in the perception of auditory verbal material...

..Previous studies have shown that people with schizophrenia who were prone to auditory hallucinations demonstrated attenuated activation of brain areas during the monitoring of inner speech...

..Furthermore, this may provide support for the existence of feed forward models, which suggest that activity in regions responsible for verbal perception is modulated by activity in areas that generate inner speech...

..Hallucinations in a given modality seem to involve areas that normally process sensory information in that modality...

..This may reflect the acquisition of small numbers of images in each subject and the confounding effects of patients actively signaling when hallucinations occur...

..Given that attentional deficits and associated brain activation changes are present early in the course of AD, we aimed to determine whether SCI is associated with brain activation changes during attentional processing...

..We explored neuroimaging differences in healthy volunteers between application of a clinically utilized rTMS protocol and a sham rTMS equivalent when undertaking a prosodic auditory task...

..We propose that verbal episodic memory impairment in aMCI is related to PFC dysfunction which affects semantic processing at encoding...

..The problems of both methods are explored, particularly of high variance and ROI definition. The potential benefits of the tractographic method for neuropsychiatric conditions with subtle and diffuse pathology are outlined...

..Our findings may indicate that changes in the activation of these regions during processing of emotionally salient stimuli may represent neural markers of patients' symptomatic improvement...

..However, previous studies have employed region-of-interest approaches or have used small or unmatched samples, with a consequent risk of type II error...

..These findings have implications for evaluating cognition in AMCI and also for monitoring the effects of future treatments in AMCI...

..Our findings suggest that there are trait abnormalities in dorsal and ventral PFC function in BD that may be more pronounced during tasks that rely on ventral-dorsal PFC interaction...

..However, fMRI results were only partly explained by structural changes, and may reflect processes of functional plasticity for the successful completion of executive-type operations...

..The recognition of negative facial affect is impaired in people with schizophrenia. The neural underpinnings of this deficit and its relationship to the symptoms of psychosis are still unclear...

..The results suggest that patients have a deficit in processing fundamental aspects of prosody, which is associated with the presence of positive symptoms...

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..Such deficits may obscure important cues for recognition of internal speech, contributing to failures of self-monitoring...

..We were interested in examining the relationship between socially relevant stimuli and decision processes in patients with schizophrenia...

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