Therapy approach
Polyvagal-Informed Therapy
A framework for understanding how the nervous system shifts between safety, danger and shutdown responses, increasingly used to inform trauma-sensitive therapy.
3
broad nervous system states described
1994
year the theory was first proposed
Debated
current scientific status of some claims
Widely used
in trauma-informed training internationally
Understanding it
About Polyvagal-Informed Therapy
Polyvagal Theory was proposed by Stephen Porges to describe how the vagus nerve and autonomic nervous system regulate our physiological state in response to perceived safety or threat. In therapy, it's used less as a standalone treatment protocol and more as a lens: helping clients understand states of hyperarousal (fight/flight), shutdown (freeze/collapse) and calm connection (safety), and building skills to move towards regulation.
Porges's theory describes three broad autonomic states: a ventral vagal state associated with safety and social connection, a sympathetic state associated with mobilised fight-or-flight, and a dorsal vagal state associated with shutdown, numbing or collapse. The idea is that our nervous system is constantly, often unconsciously, assessing safety — a process Porges termed 'neuroception' — and shifts state accordingly, frequently well before conscious awareness catches up.
For people with trauma histories, this can mean the body reacts as though danger is present in situations that are objectively safe, producing responses that feel disproportionate or confusing from the outside, and often to the person themselves. Framed this way, symptoms like sudden shutdown, irritability or dissociation are reframed as protective nervous system states rather than character flaws or overreactions, which many clients find genuinely relieving.
Therapeutically, the theory is used to guide 'bottom-up' work — building safety in the body through breath, voice, movement, and co-regulation with another person — alongside more traditional 'top-down' cognitive work. It has become widely influential in trauma-informed practice, somatic therapies and work with dissociation, even where it isn't the primary named modality.
How it shows up
You might recognise some of this
Nobody has all of it. Most people recognise a handful — and that's enough to start.
Best suited to
- Trauma histories where the body seems to react before the mind can catch up
- Chronic states of hypervigilance, shutdown or emotional numbing
- Difficulty feeling safe even in objectively safe situations or relationships
- Interest in body-based, not purely talking-based, understanding of distress
What sessions involve
- Learning to identify which nervous system state you're in at a given moment
- Practising techniques to support movement towards calm and connection, such as breath and vocal exercises
- Building a personal 'map' of triggers and cues linked to safety or threat
- Using the therapeutic relationship itself as a source of co-regulation
What changes
- Recognising a shutdown or fight/flight state as it starts, rather than only after
- Increased tolerance for being in social or connected situations
- Fewer prolonged periods of numbness or overwhelm
- A less self-critical, more compassionate framework for understanding your reactions
Signals
When this helps
- Trauma responses that feel automatic or disproportionate
- Chronic hypervigilance or emotional shutdown
- Difficulty feeling safe in relationships
- Dissociation linked to overwhelming stress
The work
How therapy helps here
Offers a plain-English framework for understanding automatic trauma responses
Supports body-based regulation skills alongside talking work
Uses the therapeutic relationship as a source of felt safety and co-regulation
The evidence
What the research actually says
Plain-English summaries of the guidance our therapists work from.
Influential framework, contested science
Polyvagal Theory has become widely used in trauma therapy training, but several of its specific physiological claims have been questioned and debated by researchers in neurophysiology, and it remains scientifically contested rather than settled fact.
Clinical usefulness reported even where mechanism is debated
Many clinicians and clients report that the theory's language — states of safety, mobilisation and shutdown — is clinically useful for making sense of trauma responses, independent of ongoing scientific debate about the precise underlying biology.
Best treated as a helpful framework, not a stand-alone proven treatment
There is limited direct outcome-trial evidence for 'polyvagal therapy' as a specific protocol; it's more accurate to describe it as an influential lens that informs established trauma and somatic approaches rather than a separately validated treatment in its own right.
What to expect
How a course of therapy usually unfolds
A guide, not a script — your therapist shapes this around you.
- 1
Psychoeducation
Your therapist introduces the three broad nervous system states and helps you start to notice them in yourself.
- 2
Mapping your patterns
Together you identify personal triggers, cues of safety, and typical shifts between states.
- 3
Building regulation skills
Practical techniques — breathing, grounding, vocal or movement exercises — support a return to calm.
- 4
Co-regulation in the relationship
The therapeutic relationship itself is used as a steady, safe presence that helps regulate your system.
- 5
Applying it more widely
Skills are extended to relationships and situations outside therapy, building lasting self-regulation.
Worth saying
Common worries, honestly answered
“It's a specific therapy technique with its own protocol.”
It's primarily a theoretical framework used to inform trauma-sensitive practice across several different modalities.
“The science is fully settled.”
Aspects of the theory remain genuinely debated among researchers, even though many clinicians find its language clinically useful.
“Shutdown or freeze responses are a choice.”
They're understood as automatic, protective nervous system states, not conscious decisions or character weaknesses.
Between sessions
Small things that genuinely help
None of these replace therapy — but they're a gentle place to begin today.
- Notice which broad state you're in — calm, mobilised, or shut down
- Try slow, extended exhale breathing to support a shift towards calm
- Identify people, places or sounds that reliably help you feel safe
- Use gentle movement or humming, which can support vagal engagement
- Be curious rather than critical about intense reactions in your body
Related
Related support
FAQs
Frequently asked
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