IPNB vs Polyvagal-Informed Therapy
A side-by-side comparison of recorded mechanisms, evidence review status, related condition topics, and philosophical roots.
At a glance
Source checks, condition-specific assessments and expert review are separate steps. Each assessment applies only to its stated population and use. Topic links do not establish comparative effectiveness.
IPNB
- Tradition
- Integrative
- Founder
- Daniel Siegel (1999)
- Review status
- Framework — unranked
- Focus
- Framework
- Format
- Individual
- Duration
- Framework
Polyvagal-Informed Therapy
- Tradition
- Somatic
- Founder
- Porges / Dana (2018)
- Review status
- Framework — unranked
- Focus
- Somatic + Relational
- Format
- Individual
- Duration
- Framework
How they work
IPNB
Core mechanism: Integration across neural networks (bilateral, vertical, temporal) through attuned relationship; expanding window of tolerance
Ontology: Impaired neural integration from relational/developmental experience; integration = mental health
Polyvagal-Informed Therapy
Core mechanism: Identifying autonomic state (ventral/sympathetic/dorsal) + co-regulation with therapist + building ventral vagal capacity
Ontology: Trauma disrupts autonomic regulation; neuroception of danger keeps nervous system in defensive states
Related condition topics
These editorial cross-references organize reading. A shared link does not mean both approaches are effective, recommended, or interchangeable for that condition.
2 shared · 0 IPNB-only · 2 Polyvagal-Informed Therapy-only
Linked to both entries
Linked only in the Polyvagal-Informed Therapy entry
What each assumes — and misses
IPNB
Philosophical roots: Siegel (interpersonal neurobiology); complexity theory (emergence, integration); Hebb (neurons that fire together); Bowlby (attachment shapes brain); Buddhism (mindfulness integration)
Blind spots: Framework too broad to test empirically; integration language can become vague; not a clinical method itself, and its most common misuse is neuroscience language standing in for relational engagement, since narrating a client's amygdala to them is not the same as being with them and the vocabulary is authoritative enough to make the substitution hard to notice
Therapeutic voice: Let's put a word on it before we go any further. Not the whole story, just the feeling. What's the closest word you've got?
Polyvagal-Informed Therapy
Philosophical roots: Porges (polyvagal theory); Darwin (The Expression of the Emotions, where the vagus appears as the pneumogastric nerve, which Porges cites as an anticipation); MacLean (triune brain, whose evolutionary layering the theory structurally repeats and which comparative neuroanatomy has since abandoned); Dana (clinical translation); Levine (somatic trauma); Merleau-Ponty (body-subject)
Blind spots: Underlying theory scientifically contested; clinical applications extrapolate beyond evidence; not a standalone protocol, and running it as one rather than letting it inform an evidence-based treatment is a misapplication of the framework
Therapeutic voice: That shutdown feeling. That's your nervous system protecting you. It makes sense. Let's see if we can find a little more safety right now.
Choosing between them
IPNB (Integrative) and Polyvagal-Informed Therapy (Somatic) come from different traditions, which means they assume different things about what a person is, what causes suffering, and what the therapeutic relationship is for. The choice between them is often less about "which works better" and more about which set of assumptions fits the client and the therapist.
For deeper coverage: see the full IPNB and Polyvagal-Informed Therapy pages, or use the interactive comparison tool to add more modalities to this comparison.