Therapy Chat · Laura Reagan, LCSW-C

472: Safety In An Unsafe World Via Polyvagal Theory - With Dr. Stephen Porges

March 3, 2025·1 hr 7 min·5 clips

Dr. Porges discovered that heart rate variability in preterm babies predicts survival, leading to the polyvagal theory.

This episode features host Laura Reagan interviewing Dr. Stephen Porges, the creator of Polyvagal Theory, about finding safety in a threatening world. Dr. Porges is a distinguished researcher whose work connects physiology to social behavior and trauma. The conversation explores how our nervous systems dictate our capacity for connection and peace. Porges recounts his scientific journey, beginning with studying heart rate variability in the 1970s and observing its link to resilience in preterm babies. He describes discovering two distinct vagal pathways, one regulating social engagement via the face and voice, and another linked to defensive shutdown. His theory explains how the evolution of the social engagement system is tied to functions like suck-swallow-breathe in infants. Porges developed the Safe and Sound Protocol (SSP), an acoustic intervention initially for autistic children that trauma therapists later adopted. He shares an anecdote about a Ukrainian refugee who could only tolerate 42 seconds of the SSP due to her nervous system's defensive state. A key insight is that intentional control and cognitive reasoning are compromised when the nervous system is in a defensive state, leading to reflexive behaviors. Porges explains that the body detects threat through "neuroception," which can trigger defensive physiology regardless of conscious perception of safety. He notes that people with severe trauma histories often crave connection but their bodies react with defense, interpreting internal feelings of vulnerability as danger. The episode highlights how co-regulation and "social nourishment" are wired biological needs, akin to the calming effect of a mother's prosodic voice on a baby. Porges reflects on learning from trauma survivors, who taught him that shutdown responses are heroic physiological adaptations, not signs of being "crazy." He discusses the challenge for trauma therapists, many of whom have their own trauma histories, in managing personal boundaries and accessibility at conferences. The host shares her own experience of sensory overload at a conference, which Porges frames as a nervous system reaction to implicit environmental cues like evaluation, hierarchy, and lack of diversity. The tone is educational and conversational, blending personal anecdote with scientific explanation. Listeners interested in the neuroscience of trauma, therapy, and human connection will find this episode deeply enriching. Those seeking a purely clinical or politically neutral discussion might find the host's introductory commentary on current events less relevant.

As heard by us

A grounded look at trauma work, co-regulation, and the strain carried by the people doing it.

The conversation stays close to trauma work as it is actually lived: nervous system responses, co-regulation, and the fact that many trauma therapists are carrying their own histories while still showing up for other people. That gives it a plainspoken, grounded feel.

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Why you'd press play

If you want a thoughtful look at trauma therapists, co-regulation, and how lived history shapes the work, press play.

Read the full recommendation in PlayNext →

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