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Updated: May 8, 2026

Brain Imaging Investigation of the Neural Correlates of Emotion Regulation
Published on: August 26, 2011
Electrophysiology of blunted emotional bias in psychopathic personality
Patrick L Carolan1, Fern Jaspers-Fayer, Deyar T Asmaro
1Laboratory for Affective and Developmental Neuroscience, Department of Psychology, Simon Fraser University, Burnaby, British Columbia, Canada; Law and Forensic Psychology Program, Department of Psychology, Simon Fraser University, Burnaby, British Columbia, Canada.
Abstract:
Diminished emotional capacity is a core characteristic of psychopathic personality. We examined behavioral and electrophysiological differences in attentional bias to emotional material in 34 healthy individuals rated high or low in psychopathic traits using the short form of the Psychopathic Personality Inventory-Revised (18 high-trait, 16 low-trait). While performing an emotional Stroop task, high-trait participants displayed reduced emotional modulation of the late positive potential (LPP, 400-600 ms), and early anterior positivity (EAP, 200-300 ms) amplitudes. Results suggest blunted bias to affective content in psychopathic personality, characterized by diminished early capture to emotional salience (EAP) and dampened cognitive emotional processing (LPP).
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