Exploring the effects of antisocial personality traits on brain potentials during face processing

Area of Science:

• Neuroscience
• Psychology
• Social Cognition

Background:

• Antisocial individuals exhibit inconsiderate behavior and deficits in recognizing fearful facial expressions.
• Previous research suggests a potential link between antisocial tendencies and impaired processing of social cues.

Purpose of the Study:

• To investigate early visual processing of social stimuli in healthy females with and without antisocial behavioral tendencies.
• To determine if antisocial traits are associated with deficits in the basic processing of social cues using event-related potentials.

Main Methods:

• Employed a gambling task with happy and angry faces as feedback stimuli.
• Measured event-related potentials, specifically P1 and N170 amplitudes, to assess early visual processing.
• Compared brain activity between healthy female participants with high and low antisocial traits.

Main Results:

• Significant processing differences were observed as early as 88-120 ms after feedback onset.
• Participants with low antisocial traits showed larger P1 amplitudes compared to those with high antisocial traits.
• No significant group differences were found in N170 amplitudes.

Conclusions:

• The findings suggest that sensory processing of facial stimuli is functionally intact in healthy individuals with antisocial tendencies.
• However, individuals high in antisocial traits may exhibit a reduced readiness to respond to social facial cues.
• Potential explanations for the observed P1 amplitude differences include variations in attention allocation, arousal levels, and face processing.