Polyvagal Theory (Porges, 2011) has moved from specialist clinical literature into mainstream mental health discourse with both useful and distorting consequences. This article offers a clinically grounded overview of what nervous system regulation means, what dysregulates it, and what the evidence supports — written for an informed adult audience rather than a clinical training context.
The piece covers the three-state ANS model (ventral vagal, sympathetic, dorsal vagal), the factors that influence individual dysregulation thresholds (early experience, chronic stress load, trauma history, neurobiology), and the symptom profiles associated with chronic sympathetic activation versus dorsal vagal collapse. It addresses the evidence base for self-directed regulation tools — extended exhale breathing, non-invasive vagal stimulation, slow rhythmic movement, co-regulation, somatic therapies, and MBSR/MBCT — and explicitly addresses what is less effective than commonly presented, including cold exposure, alcohol, and cognitive reframing in the absence of physiological downregulation.
A section on neurodivergent nervous systems notes that sensory processing differences and the chronic load of masking produce a distinct dysregulation profile requiring calibrated intervention.
A free five-page clinical toolkit and the full psychoeducational article are available at Mindpath Academy for clients and referring practitioners.
Dr Melanie du Preez | HPCSA-registered Clinical Psychologist | 26 years clinical experience | Founder, Mindpath Academy | Maudsley/FBT-certified | Specialisations: neurodivergence, trauma, burnout, LGBTQ+ mental health