The Relationship Between Impulse Control, Emotional and Cognitive Regulation Mechanisms and Heart Rate Variability

Area of Science:

• Psychiatry and Psychology
• Autonomic Nervous System Research
• Personality Disorder Studies

Background:

• Borderline Personality Disorder (BPD) is a complex mental health condition characterized by emotional instability, impulsivity, and interpersonal difficulties.
• Heart Rate Variability (HRV), a measure of autonomic nervous system function, has been explored as a potential biomarker in various psychiatric disorders.
• Previous research has suggested potential alterations in HRV in individuals with BPD, but findings remain inconsistent.

Purpose of the Study:

• To compare heart rate variability (HRV) parameters between female patients diagnosed with Borderline Personality Disorder (BPD) and healthy female controls.
• To investigate the relationship between HRV parameters and key BPD-related features, including impulsivity, emotion regulation, and neurocognitive performance.
• To explore potential differences in HRV during rest and in response to emotionally evocative stimuli.

Main Methods:

• A case-control study involving 21 female BPD patients and 20 healthy female controls.
• Comprehensive assessment using structured clinical interviews, self-report questionnaires (impulsivity, emotion regulation), and a battery of neurocognitive tests.
• Ambulatory Holter recordings to measure HRV at rest and during exposure to neutral and fear-inducing videos.

Main Results:

• The low-frequency/high-frequency ratio (LF/HF) of HRV was significantly higher in the BPD group compared to controls during neutral and fear video conditions.
• No significant differences were observed in other HRV parameters between the BPD and control groups.
• While significant differences were found in impulse control, affect regulation, and neurocognitive skills between groups, no correlations were identified between HRV parameters and these measures.

Conclusions:

• Contrary to the initial hypothesis, overall HRV did not significantly differ between BPD patients and healthy individuals.
• HRV was found to be unrelated to levels of impulsivity, difficulties in emotion regulation, or neurocognitive performance in the studied BPD cohort.
• These findings suggest that while specific autonomic responses might be altered (LF/HF ratio), general HRV may not be a distinguishing physiological marker for BPD or a correlate of its core symptom domains.