Gender Differences in Aggression-related Responses on EEG and ECG

Area of Science:

• Neuroscience
• Psychology
• Human Behavior

Background:

• Traditional theories explain gender differences in aggression through evolutionary and sociocultural lenses.
• Psychological studies show inconsistent findings, highlighting a gap in understanding neurobiological mechanisms.
• Limited research exists on gender-based neurobiological underpinnings of aggression.

Purpose of the Study:

• To investigate gender differences in aggression using neurobiological (EEG, ECG) and psychological methods.
• To explore gender-specific brain activity (gamma signals) and cardiovascular responses to aggressive stimuli.
• To identify neurobiological correlates of aggression in healthy Korean youth.

Main Methods:

• Analysis of electroencephalography (EEG) and electrocardiography (ECG) data.
• Utilized psychological self-report measures for aggression indices.
• Stimulated participants with aggressive videos to record neurobiological responses.

Main Results:

• Men reported higher overall, physical, and reactive/overt aggression.
• Distinct gender-related patterns in gamma signals from the right ventrolateral frontal cortex were observed.
• Gender differences in EEG and ECG responses varied with different types of aggressive scenes.

Conclusions:

• Findings support a psychological propensity for aggression and reveal underlying neurobiological mechanisms.
• Specific EEG signals in the right prefrontal cortex differentiate genders during situation-dependent aggression.
• This study advances objective understanding of gender differences in aggression and emotional processing.