Cortical correlates of impaired self-regulation in personality disordered patients with traits of psychopathy
Varlamov, Anton Khalifa, Najat Liddle, Peter F. Duggan, Conor Howard, Richard C.
Varlamov, Anton
Khalifa, Najat
Liddle, Peter F.
Duggan, Conor
Howard, Richard C.
Abstract
Psychopathic personality disordered patients would, by virtue of a failure to self-regulate, be expected to show diminished amplitudes of feedback-related brain potentials. Among a sample of personality disordered patients detained at different levels of security, those who met a Psychopathy Checklist (PCL) criterion of 25 or above were identified ( N = 27). Their event-related brain potentials (ERPs), together with those of their nonpsychopathic counterparts ( N = 22) and healthy male controls ( N = 20), were measured while they performed a visual Go/No Go task, with feedback given for correct and incorrect performance. Psychopathic patients showed a significantly reduced amplitude of an early frontal negative ERP component maximally evoked by negative feedback, and a high rate of errors of commission. Findings are consistent with the idea that psychopathic patients' unsuccessful attempts to self-regulate reflect a cognitive deficit characterised by a failure to attend and respond to a mismatch between expected and obtained outcomes. (PsycINFO Database Record (c) 2016 APA, all rights reserved) (Source: journal abstract)
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2011
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Varlamov, A., Khalifa, N., Liddle, P., Duggan, C. & Howard, R. (2011). Cortical correlates of impaired self-regulation in personality disordered patients with traits of psychopathy. Journal of Personality Disorders, 25 (1), pp.75-88.