Borderline Personality Disorder (BPD) involves altered social cognition, notably dysfunctional processing of cues signaling potential social exclusion and heightened social pain. This study uses EEG during a controlled Cyberball task to test whether BPD patients show a functionally altered social-pain network, particularly increased theta activity, when experiencing induced social exclusion.
For patients, a diagnosis of borderline personality disorder (established by a board-certified psychiatrist during a structured interview using the MINI) based on the Diagnostic and Statistical Manual of Mental Disorders (DSM-5)
For healthy individuals, no psychiatric disorders according to the DSM-5 (except for tobacco use)
Must be between 18 and 40 years old
Must provide a signed, free, and informed consent form
Known neurological disorders (patient group and control participants)
Comorbid psychiatric disorders (e.g., current depressive episode; ADHD treated with methylphenidate; bipolar disorder)
Active substance use disorder (excluding tobacco)
Pregnancy or breastfeeding
Parallel
2 Tasks : - stop signal reaction time and Cyberball then ill out an evaluation form
BehavioralUpon arrival, during electrode placement, participants will complete a stop-signal reaction time (SSRT) task measuring cognitive control for approximately ten minutes. Following this, they will participate in an online ball game, Cyberball, a controlled laboratory task simulating social inclusion or exclusion. The Cyberball task will last approximately 20 minutes and will consist of three experimental conditions presented in a fixed order: passive viewing, inclusion, and then exclusion. During this time, participants' visual activity will be measured using eye tracking. At the end of the Cyberball game, participants will complete: * Social Ostracism and Cohesion Rating Scales * Need Threat Scale
Theta oscillation power in brain regions associated with social pain (e.g., frontal cortex, insula, ACC).
Using EEG, this project aims to determine whether patients with borderline personality disorder show alterations within the neural network of social pain (increased theta) when they experience social pain (Cyberball task score from 0% to 100%), a heightened perception of social pain compared to control subjects, and dysfunctional social attentional capture. The findings could deepen our understanding of social pain and the dysfunctional mechanisms underlying the disorder. The project may open new avenues for interventions aimed at reducing social pain or sensitivity to social pain in individuals with borderline personality disorder.
The degree of social pain perception
Score on the Needs Threat Scale (Van Beest \& Williams, 2006) Score from 12 to 62 , assessing the degree of social pain
Social attention
The Visual attention as measured by eye tracking during the social pain task
the characterization of cognitive control performance between TPB patients and volunteers
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