What is the Origin of Heart Rate Variability Coherence?

The term combines "Heart Rate Variability," a widely used clinical measure of ANS activity, with "Coherence," which denotes a state of logical or consistent relation. The concept gained prominence through biofeedback research and psychophysiology, emphasizing the heart-brain interaction as a key to stress management and health optimization.

What is the Mechanism of Heart Rate Variability Coherence?

Coherence is primarily driven by deliberate, slow, paced breathing, typically around 5-7 breaths per minute, which maximizes the effect of respiratory sinus arrhythmia. This respiratory rhythmicity entrains the baroreflex loop, creating a resonance between the cardiovascular and respiratory systems. This synchronization increases vagal tone, shifting the ANS toward parasympathetic dominance, which promotes relaxation and enhances emotional stability.

Heart Rate Variability Coherence ∞ Area

Heart Rate Variability Coherence

Meaning

A specific physiological state where the heart rhythm’s oscillations become highly synchronized with the respiratory cycle, resulting in a smooth, sine-wave-like pattern in the heart rate variability (HRV) signal. This coherence signifies optimal functional communication and balance between the sympathetic and parasympathetic branches of the Autonomic Nervous System (ANS). Clinically, it is a robust marker of physiological resilience and emotional regulation capacity.