Polyvagal Acupuncture™: An Integrative Path to Nervous System Healing - Revised

Reposted by request from folks who took my intro to PVA class last month!

Polyvagal Acupuncture™ (PVA) and its twin modality Polyvagal Massage (PVM) ™ is an integrative technique I developed out of necessity—born during a time of crisis, refined through clinical application, and grounded in both traditional Chinese medicine and modern neuroscience.

Primitive Reflexes and Their Role in Nervous System Development

Primitive reflexes (PRs) are foundational components of the human nervous system, and serve as essential building blocks for complex motor and cognitive functions. These automatic, involuntary movements are present at birth and were thought to integrate as the child matures, usually by the age of 8. Controlled by cranial nerves in the brainstem—a primitive part of the brain—these reflexes maintain a balance between the parasympathetic and sympathetic nervous systems to support motor movement, decision-making, and emotional regulation. When PRs remain reactive (retained) or reemerge later in life, they disrupt vagal nerve signals and leave the body in a heightened state of arousal, with higher levels of stress hormones along the HPA axis.

Primitive Reflexes in Clinical Practice: Autonomic Dysregulation, Fascial Bracing, and Developmental Retention

Primitive reflexes (PRs) are involuntary motor responses that establish foundational postural tone, orientation, and motor-sensory coordination during early development. These reflexes should integrate as higher cortical control matures. When they remain active—or reactivate in the context of trauma, emotional stress, neuroinflammation, or structural compromise—they produce persistent motor patterns that disrupt movement, stability, and autonomic regulation.

In clinical settings, retained PRs do not present abstractly. They express through specific, reproducible fascial bracing patterns, muscle spasticity, and sinew channel fixation. These patterns impair functional mobility, destabilize postural tone, and often correlate with elevated sympathetic drive, reduced vagal tone, and impaired cranial nerve regulation.

The Bibliography

In lieu of a references page for each blog post, I have an included the references for the entire subject, to be expanded as content increases. For ease, I reference the last name of the author in the blog paragraph for more important works.  Polyvagal Acupuncture (TM) and all materials are trademarked intellectual property. Please do not use without a reference.

Melatonin, Technology, and Health: The Science Behind the Controversy

Melatonin has been recognized not only as a hormone critical for regulating the body's natural circadian rhythm but also for its potential in preventing serious health conditions like cancer and circadian dysrhythmia patterns (often seen in neurogenic decline and trauma). 

Despite its well-documented circulatory and oncostatic (cancer-suppressing) properties, a recent study presented by the American Heart Association (AHA) has raised concerns about the cardiovascular risks of melatonin use, claiming a possible link to heart failure.[1]

A New Narrative for Trauma Care: A System-Wide, Bottom-Up Approach

A core limitation in many conventional "top-down" trauma therapies is that they target cognition and emotion while the underlying Autonomic Nervous System (ANS) remains locked in a state of high arousal. This narrative proposes that true, sustainable healing requires a "bottom-up" restoration of the ANS, a process that begins in the gut—the primary physiological site for our parasympathetic "rest, digest, and connect" response.

The Startle Reflex: The Initial Spark of Freeze–Fight–Flight Activation

The Startle Reflex is the earliest postural motor reaction to sudden sensory input, emerging in utero between 9–12 weeks gestation. It serves as a primitive survival mechanism, activating the reticular brainstem in response to unexpected threat—auditory, tactile, vestibular, or visual. Unlike the Moro Reflex, which follows a full arc of extension and recoil, the Startle reflex is a pure flexor response, rapid, involuntary, and globally defensive.

When triggered, the response begins with a bilateral blink, followed by immediate contraction of the neck, shoulders, diaphragm, and deep core. This sequence occurs within 30–50 milliseconds, bypassing cortical processing. It is not a social or communicative reflex—it is pure brainstem defense, marking the first motor imprint of hypervigilance.

The Fear Paralysis Reflex (FPR): The Primordial Freeze Response

  

The Fear Paralysis Reflex (FPR) is the earliest-appearing defensive reflex in fetal development, emerging as early as 5–8 weeks gestation. It precedes all motoric fight-or-flight responses and represents the organism's first organized reaction to threat: tonic immobility. This freeze state is characterized by stillness, bradycardia, breath-holding, and muscular tension throughout the deep core.
Unlike the Startle or Moro reflexes, which produce visible motor output, FPR is a silent, full-body inhibition. Its role is to make the fetus "invisible" in response to intrauterine or environmental threat—predator, vibration, or maternal stress. It is autonomic, vagal-dominant, and deeply subcortical, involving cranial and sacral parasympathetic regulation.

The Moro Reflex: The Core Disruptor of Gut–Brain–Body Integration

The Moro Reflex, distinct from the simpler Startle Reflex, is a higher-order primitive reflex that appears at birth and is typically integrated by 4–6 months of age. It is triggered by a sudden loss of support—as if the infant is falling—and results in a global motor response: the arms and legs shoot outward, hands open wide, then recoil in a grasping motion, often accompanied by crying. This reflex is not a mere startle—it is the first vestibular–sympathetic integration event, combining full-body motor discharge with thoracoabdominal bracing, vocalization, and diaphragmatic lock.

Freeze-Based Reflexes: The Missing Foundation in Primitive Reflex Work

Core Tendon Guard Reflex (CTG): Architectural Overview

Most primitive reflex training programs, particularly those focused on pediatrics, emphasize postural and motor pattern reflexes such as ATNR, STNR, and TLR. Yet many of my early classes omitted the most foundational layer of the reflex hierarchy: the freeze responses.

Startle, Fear Paralysis Reflex (FPR), and Core Tendon Guard Reflex (CTG) all precede the Moro reflex—not just in development, but in function. These are the body’s last line of defense against threat. I first encountered this tier of reflexes through Masgutova’s Neurosensorimotor Reflex Integration (MNRI) work for PTSD. While most pediatric and OT-based programs I have taken did not cover the freeze responses, Masgutova’s system explicitly maps them in the context of trauma and autonomic dysregulation. Dr. Karen Pryor’s neuroplasticity training also explored these reflexes in detail.