The Polyvagal Theory

Somatic Science® uses a neurocognitive approach based on evolutionary biology and it advances the polyvagal theory by Dr. Stephen Porges. It introduces several refinements to the PVT that cause it to be applicable by anyone, at any time without the use of devices, substances, or imposing any constructs that violate the self-regulating nature of our nervous system.

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The Polyvagal Theory, developed by Dr. Stephen Porges, describes how the autonomic nervous system shifts between different states of safety, danger, and shutdown. It proposes that the vagus nerve, which connects the brain to the body’s organs, has three main branches that shape how we respond to our environment.

• When the ventral vagal system is active, the body feels safe. Breathing, digestion, and heart rhythms are balanced, and social connection feels possible.

• When the sympathetic system is engaged, the body prepares for action—mobilizing energy for fight or flight.

• When the dorsal vagal system takes over, the body may shut down into collapse or numbness, conserving energy in the face of overwhelming threat.

The Polyvagal Theory emphasizes that these states are not chosen consciously but are guided by what Porges calls neuroception—the nervous system’s unconscious detection of safety or threat.

In Somatic Science®, these same physiological states are observed and integrated in real time. Rather than relying only on memory or interpretation, the approach works with the body’s immediate signals—breath, heart rhythm, muscle tone, and facial expression—to support a shift from defensive patterns toward regulation, curiosity, and relational presence.

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