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Abnormalities of the late positive potential during emotional processing in individuals with psychopathic traits: a meta-analysis

Published online by Cambridge University Press:  03 September 2019

William Vallet Open the ORCID record for William Vallet [Opens in a new window] ,
Antoine Hone-Blanchet  and
Jerome Brunelin Open the ORCID record for Jerome Brunelin [Opens in a new window]
William Vallet*
Affiliation:
CH Le Vinatier, Lyon, Bron, France Cognitive Neuroimaging Unit, CEA DRF/Joliot, INSERM, Université Paris-Sud, Université Paris Saclay, NeuroSpin center, 91191Gif-sur-Yvette, France
Antoine Hone-Blanchet
Affiliation:
Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
Jerome Brunelin
Affiliation:
CH Le Vinatier, Lyon, Bron, France INSERM-U1028, CNRS-UMR5292, Lyon Neuroscience Research Center, PSYR2 Team, Université de Lyon, Lyon, France
*
Author for correspondence: William Vallet, E-mail: William.vallet@inserm.fr
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Abstract

Background

Individuals with psychopathic traits display deficits in emotional processing. A key event-related potential component involved in emotional processing is the late positive potential (LPP). In healthy controls, LPP amplitude is greater in response to negative stimuli than to positive or neutral stimuli. In the current study, we aimed to compare LPP amplitudes between individuals with psychopathic traits and control subjects when presented with negative, positive or neutral stimuli. We hypothesized that LPP amplitude evoked by emotional stimuli would be reduced in individuals with psychopathic traits compared to healthy controls.

Methods

After a systematic review of the literature, we conducted a meta-analysis to compare LPP amplitude elicited by emotional stimuli in individuals with psychopathic traits and healthy controls.

Results

Individuals with psychopathic traits showed significantly reduced LPP amplitude evoked by negative stimuli (mean effect size = −0.47; 95% CI −0.60 to −0.33; p < 0.005) compared to healthy controls. No significant differences between groups were observed for the processing of positive (mean effect size = −0.15; 95% CI −0.42 to 0.12; p = 0.28) and neutral stimuli (mean effect size = −0.12; 95% CI 0.31 to 0.07; p = 0.21).

Conclusions

Measured by LPP amplitude, individuals with psychopathic traits displayed abnormalities in the processing of emotional stimuli with negative valence whereas processing of stimuli with positive and neutral valence was unchanged as compared with healthy controls.

Keywords

Electroencephalographyemotional processinglate positive potentialpsychopathy
Type
Original Articles
Information
Psychological Medicine , Volume 50 , Issue 12 , September 2020 , pp. 2085 - 2095
Copyright
Copyright © Cambridge University Press 2019

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