A Multi-Modal Phase Coherence Model for Cognitive and Endocrine Regulation

Abstract This research introduces the Multi-Modal Phase Coherence Index (MPCI), a scientific model that explains how slow, controlled breathing can influence brain activity and hormonal cycles. By analyzing timing patterns across respiration (~ 0.1 Hz), cortical theta waves (~ 6 Hz), and hormone release rhythms (~ 0.01 Hz), we demonstrate how these systems can align to support cognitive focus, emotional stability, and internal regulation. Simulation data show that paced breathing significantly improves synchrony between brain and hormone signals, with coherence values rising by over 30% during controlled respiration. Our proposed model also highlights how key brain regions involved in emotion and attention regulate endocrine pathways, corresponding to energy centres described in “Ancient Indian Yogic Science”. The MPCI framework scientifically translates ancient yogic concepts into measurable, experimental and neuro-scientific model, offering a bridge between breath-based yogic practices and modern neuroendocrine research. This work supports the development of non-invasive methods for improving mental clarity, stress resilience, and physiological balance through controlled breathing.