Polyvagal Theory – arguments by proponents & opponents

[Ravn]

Stephen Porges’ Polyvagal Theory is being used both by some BPS proponents and by some ME/CFS advocates to support claims about dysregulated autonomic nervous systems, being stuck in fight-flight-freeze, and related ideas.

Others, including scientists whose work has been cited by Porges as supposedly supporting his theory, disagree with his interpretation of the available data.

Rather than creating a thread for each paper I think it makes more sense to collect them together in one thread which can then function as a resource for anyone who finds themselves dragged into an argument about the validity of this theory.

These appear to be the latest papers by the originator of the theory:

Polyvagal Theory: Current Status, Clinical Applications, and Future Directions

Abstract
Polyvagal Theory proposes an evolutionarily informed neurophysiological framework for understanding how the autonomic nervous system supports social engagement, emotional resilience, and adaptive physiological responses. At its core, the theory emphasizes a hierarchical organization of autonomic states mediated by the vagus nerve, highlighting the unique role of the ventral vagal complex in facilitating social behavior and physiological flexibility through mechanisms such as neuroception, co-regulation, and dissolution. This paper reviews the empirical foundations of Polyvagal Theory, addresses methodological critiques − particularly regarding anatomical specificity and respiratory sinus arrhythmia (RSA) − and consolidates recent advances in autonomic measurement. Furthermore, it explores wide-ranging clinical implications across diverse conditions including trauma, chronic pain, autism, developmental disorders, and mood disorders. Finally, the paper advocates for applying a "science of safety" in clinical practice, education, and public health, offering future directions for research, clinical practice, and the systemic design of institutions that support physiological safety at scale.

Polyvagal theory: a journey from physiological observation to neural innervation and clinical insight

Abstract
Polyvagal theory (PVT) offers an integrative model of autonomic regulation that accounts for the evolution, neuroanatomy, and functional organization of the vagus nerve in relation to behavioral and emotional processes. This article revisits PVT by synthesizing its scientific foundations with recent advancements in transcriptomics, neurophysiology, and clinical application. Particular emphasis is placed on the theory's hierarchical model of the autonomic nervous system, the role of the ventral vagal complex in social behavior, and the construct of neuroception—the neural process by which safety and threat are detected without conscious awareness. The discussion incorporates both theoretical refinement and empirical validation while addressing common misconceptions and critiques of the model. In addition to the scientific narrative, the author offers a personal perspective on the intellectual and experiential origins of PVT, illustrating its translational value in clinical and therapeutic settings. By combining rigorous science with experiential insight, this article seeks to advance understanding of the autonomic foundations of social behavior and mental health.

And here is a recent rebuttal:

WHY THE POLYVAGAL THEORY IS UNTENABLE. An international expert evaluation of the polyvagal theory and commentary upon Porges, S.W. (2025). Polyvagal theory: current status, clinical applications, and future directions.

Abstract
Thirty-nine highly acknowledged experts in the areas of the physiology and the evolution of the vagus nerve and of vertebrate social behavior (many whose works have been cited in the polyvagal theory [PVT] literature as supporting the theory) were invited by the first author to participate as co-authors of this article. They were asked to evaluate the PVT and comment upon an overview of the theory written by its author (Porges, 2025a). All those invited, save one, accepted and co-authored the paper. The dissenting scholar was “unfamiliar with the PVT.” This article specifically appraises--based upon the current state of knowledge of autonomic function and vertebrate evolution--several major elements of the PVT, as described in Porges (2025a) and elsewhere. These include: 1) the validity of PVT assumptions that respiratory sinus arrhythmia is a direct measure of the extent of central vagal drive to the heart; 2) PVT characterizations regarding the neuroanatomy and functions of two major brainstem vagal nuclei, the ventrally situated Nucleus Ambiguus and the Dorsal Motor Nucleus of the vagus nerve; 3) PVT assertions regarding the evolution of the vagus nerve; 4) PVT claims about the specificity of mammalian social behavior in relation to nonmammalian vertebrates, and 5) PVT interpretations of earlier seminal physiological literature. All co-authors agree that major tenets of the PVT are not supported by past or current knowledge and, in several instances, are inconsistent with the broader evidence base. Since the topics addressed constitute fundamental premises of the PVT, we conclude that the PVT is untenable, because it is not defensible based on existing neurophysiological and evolutionary evidence. The psychological elements composing the superstructure of the PVT are primarily derived from earlier psychological literature and are neither clarified nor strengthened by PVT constructs that lack evidence. This article does not intend to address alternative explanations about relations between vagal function and psychological processes, although such explanations do exist.

 

[SNT Gatchaman]

An international expert evaluation of the polyvagal theory and commentary

17,000 downloads.

 

[InitialConditions]

Also a favourite of RecoveryGrift™ YouTubers

 

[Holinger]

I have come across a few exercise physiologists and psychologists that are big promoters of the theory but are pretty out there and unscientific generally so I have kept away from them. I can’t exactly grasp the theory but it seems a bit cultish.

 

[Holinger]

There are exercise physiologists is Australia that seem to teach and think that a stuck fight or flight response is a key to ME/CFS. I do not think they would have learnt that as part of their training but have caught onto a meme from a psychologist or something afterwards. It is all a bit weird how positive psychological coaching with a then meditative/mindfulness practice is delivered from an exercise physiologist, but it is quite common.