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  • Title: Heightened early-attentional stimulus orienting and impulsive action in men with antisocial personality disorder.
    Author: Lijffijt M, Lane SD, Mathew SJ, Stanford MS, Swann AC.
    Journal: Eur Arch Psychiatry Clin Neurosci; 2017 Oct; 267(7):697-707. PubMed ID: 27662886.
    Abstract:
    We tested whether enhanced stimulus orienting operationalized as N1 and P2 auditory evoked potentials to increasing loudness (50-90 dB clicks) could be associated with trait impulsivity (Barratt Impulsiveness Scale, BIS-11), impulsive action (commission error on the Immediate Memory Task), or impulsive choice (immediate responses on temporal discounting tasks). We measured N1 and P2 loudness sensitivity in a passive listening task as linear intensity-sensitivity slopes in 36 men with antisocial personality disorder with a history of conviction for criminal conduct and 16 healthy control men. Across all subjects, regression analyses revealed that a steeper P2 slope predicted higher IMT commission error/correct detection ratio, and lower stimulus discriminability (A-prime). These associations were also found within both groups. These relationships suggest an association between enhanced early stimulus orienting (P2), impulsive action (response inhibition), and impaired signal-noise discriminability (A-prime).
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