Briony Grant Briony Grant

Fear Paralysis Reflex

Fear Paralysis Reflex: The "Big Boss" of Primitive Reflexes

What It Is — And Why It Matters

The Fear Paralysis Reflex (FPR) is the earliest defensive reflex, emerging as early as 5–7 weeks post-conception. Seen as the fetus’s built-in "play possum" mechanism, it triggers a full-body freeze to protect during perceived threats (like maternal stress) by slowing movement, lowering heart rate, and conserving energy

Ideally, FPR integrates in utero, merging into the Moro reflex and ceasing by around 32 weeks But when it doesn’t disintegrate, it lingers—and becomes the "big boss" holding subsequent reflexes in check

From Womb to Dorsal-Vagal Freeze

In polyvagal terms, a retained FPR is tied to the dorsal vagal shutdown—the same survival-state that underpins extreme freeze, dissociation, or vasovagal fainting.

So when FPR is active post-birth, individuals may default to curling up, shutting down, or emotionally disconnecting—like "letting the world pass us by."

Signs of a Retained FPR in Children & Adults

Emotional & Behavioral Traits:

Heightened anxiety, phobias, panic attacks

Extreme shyness or social withdrawal; selective mutism

Freezing under stress; “deer in headlights” responses

Elective mutism or difficulty speaking in unfamiliar settings

Sensory & Physiological Reactivity:

Hypersensitivity to touch, sound, light, movement

Shallow or difficult breathing; fatigue, holding breath

Motion sickness, poor stress tolerance

Cognitive & Social Challenges:

Inflexibility, fear of change, routines dependence

Obsessive-compulsive or perfectionistic tendencies

Difficulty with eye contact, low self-esteem, defensive or oppositional behavior

Mental Health & Developmental Impact:

Withdrawal, depression, isolation

Language delays, especially expressive or social speech

Learning challenges, poor motor control/balance

Why FPR Deserves the "Big Boss" Title

Root of Other Issues: If FPR remains active, it can prevent other primitive reflexes from integrating properly, undermining motor, emotional, and cognitive progress

Deepest Level: It’s the most primal reflex—deeper than Moro—and forms the foundation for survival behavior. When stuck, it locks the system into a baseline fear response

Emotional Filter: It colors every perception through a lens of fear and shutdown, affecting sleep, attachment, exploration, and social engagement

Functional Neuro Health Approach: Integration for Transformation

Polyvagal Framework & Nervous System Regulation
Awakening the ventral vagal system (social engagement) is key—to move from shutdown into connection and calm

Profound Benefits of Integration

Once FPR integrates:

Emotional freedom—reduced anxiety, emotional dysregulation, and fear

Social ease—improved communication, connection, confidence

Physical resilience—better stress tolerance, coordination, sensory processing

Cognitive clarity—more presence, learning capacity, and adaptability

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What happens in a functional neurology session?

What to Expect From Your Functional Neurology Appointment

What to expect & how it works

Hi and welcome!

I wanted to give you a quick overview of what functional neurology is, how it works, and what you can expect from your sessions with me.

The Nervous System ‘Bucket’ Theory

Think of your nervous system like a bucket. Over your lifetime, that bucket slowly fills up. Sometimes it’s big, obvious things like a concussion, surgery, or a traumatic event. Other times, it’s lots of little things that add up over time—stress, poor sleep, ongoing pain, childhood trauma, falls, inflammation, emotional suppression, or illness.

When that bucket overflows—when your nervous system reaches its threshold—that’s when symptoms often show up.
Pain. Anxiety. Depression. Exhaustion. Brain fog. Migraines. Gut issues. Behavioural challenges in children. A nervous system that’s just not coping.

And here’s the really interesting part: when the system is overwhelmed, the brain often reverts to its old default settings. That includes switching back on primitive reflexes that should’ve integrated in early development—or disintegrating ones that were once well-functioning.

What Are Primitive Reflexes—and Why Do They Matter?

Primitive reflexes are automatic movement patterns that are meant to help us survive in early life—but they’re supposed to switch off as the brain matures. When these reflexes stay active (or get reactivated later in life), they can cause a huge range of issues—physically, mentally, and emotionally.

For example:

  • Retained Moro reflex = easily startled, hyper-vigilant, difficulty calming down.

  • Retained ATNR or STNR = poor coordination, clumsy, neck/back pain, handwriting struggles.

  • Retained TLR = poor balance, fear of falling, motion sickness.

  • Palmar / plantar reflexes = chronic tension in hands, feet, or jaw.

So we start with checking all your primitive reflexes and cranial nerves to see how your brain and nervous system are functioning at a foundational level.

Then, using gentle corrections, we begin to reintegrate and reset your system so your brain stops running these old patterns.

What Happens in the First Appointment

In your first session, we:

  • Talk about your full history—because every detail matters

  • Assess your primitive reflexes

  • Check your cranial nerves

  • Begin corrections to help bring the nervous system back to a regulated state

This session is all about finding out what your system is doing and why, so we can get to the root cause rather than just treating symptoms.

What We Cover in Your Second Session

In the second session, we dive deeper into the visual and eye movement systems, including:

  • Eye tracking

  • Convergence and divergence (near/far focus)

  • Saccades (fast eye movements)

  • Optokinetics (how your brain processes movement in the world around you)

These systems tell us a lot about how well your brain is processing information—and how much effort it's using just to get through the day.

What We Can Explore in Ongoing Sessions

Once your brain and body have started to regulate and you’re feeling more balanced, we may explore deeper areas such as:

  • Emotional processing and stored trauma (especially in the heart wall)

  • Underlying infections or toxic load

  • Adrenal function, organ and gland imbalances

  • Your intrinsic core system, which plays a key role in chronic back and neck pain

  • Sleep, memory, and stress resilience

  • And how all of it connects through your brain-body feedback loop

What Clients Commonly Report

Many people come to me with issues like:

  • Pain that doesn’t respond to regular treatment

  • Ongoing tightness in the neck, shoulders or hips

  • Fatigue that feels like “running on empty”

  • Brain fog, poor memory or word-finding issues

  • Kids who are struggling with focus, behaviour, or reading

  • Anxiety that just doesn’t shift no matter what they try

If that sounds like you, know that you’re not alone—and that change is absolutely possible when we work with the nervous system itself.

A Final Note

Functional Neurology looks at the root cause, not just the symptoms. It’s gentle, non-invasive, and truly life-changing for many clients. Every person’s nervous system is unique, which is why we tailor every session to you.

Thank you again for trusting me with your care—I’m really looking forward to helping you or your child reset, reconnect and feel better from the inside out.

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Briony Grant Briony Grant

Guide to Neuro Reset Techniques

Neuro Reset Download FREE PDF
Kids Neuro Reset Download FREE PDF
What is Functional Neurology PDF download

Practical Ways to Reset Your Nervous System and Calm Anxiety

When stress gets stuck, your nervous system needs a reset. Activating your vagus nerve — the longest nerve connecting brain and body — helps switch off fight/flight and bring calm. These techniques are easy, effective, and science-backed.

1. The Salamander Technique

The Salamander technique is not just a neck mobility exercise — it’s a powerful vagus nerve reset tool. By stimulating the brainstem where the vagus nerve originates, it helps shift your nervous system out of fight/flight mode and into a state of calm and relaxation.

One of my all-time favorite exercises for improving neck mobility, reducing pain and stiffness, and calming the nervous system is called the Salamander.

How to do it:
- Interlace your fingers and place your hands gently at the back of your head, resting on the occipital area.
- Slowly side-bend your upper body to one side while turning your eyes in the opposite direction.
- Soften your gaze if needed. Hold until you feel a ‘vagal response’ (yawn, swallow, sigh). Return to center and switch sides.

What to expect:
Yawning or swallowing are signs your nervous system is relaxing. Expect improved neck mobility and a sense of calm.

Why it works:
This movement stimulates the brainstem, improving blood flow and regulating the vagus nerve and spinal accessory nerve.


2. Breathing Technique: Short Inhale, Extended Exhale

Breathing is one of the quickest ways to calm your nervous system by activating the vagus nerve. This simple method uses a short inhale followed by an exhale about twice as long.

How to do it:
- Inhale gently through your nose.
- Exhale slowly through your mouth, about twice as long as your inhale.
- Repeat for a few breaths.

Why it works:
The extended exhale releases acetylcholine, a calming neurotransmitter. It engages the diaphragm where the vagus nerve runs.

Important notes:
If you feel air hunger or discomfort, pause and return to normal breathing. Use this when overwhelmed or anxious.

3. Morning Sunlight Exposure

Natural sunlight helps boost serotonin and regulate your body clock, reducing stress and improving sleep.

How to do it:
- Get outside within the first hour of waking.
- Spend 5–10 minutes in natural light without sunglasses (don’t look directly at the sun).

4. Bouncing on Heels & Shaking Hands

Inspired by Qigong practices like 'Shaking the Tree', these gentle movements help release tension and promote balance.

Bouncing on Heels:
- Stand with feet hip-width apart.
- Gently bounce on your heels for 1–2 minutes.

Benefits:
- Releases stored tension
- Calms the nervous system
- Promotes circulation and energy flow

Shaking:
- Gently shake your hands at your sides or through your arms/shoulders.
- Relax your jaw and breathe normally.

Benefits:
- Reduces cortisol
- Enhances mental clarity
- Improves blood flow

5. Gratitude Practice

Gratitude rewires the brain for positivity and reduces anxiety.

How to do it:
- Write or say 3 things you’re grateful for each day.
- Encourage kids to do it at breakfast or bedtime.

When to Use These Techniques

- When you feel overwhelmed, anxious, or tense.
- When your kids are dysregulated or acting out.
- As daily habits to build calm, resilience, and connection.

Bonus: Consistency is Key

Resetting your nervous system takes practice. Make these techniques regular habits and notice your family feeling calmer, more connected, and better able to handle life’s stresses.

Ready to take the next step?

If you or your child are feeling stuck in stress, anxiety, or overwhelm, these simple techniques are a great place to start — but sometimes we need deeper support.
I offer gentle, evidence-based nervous system work that helps calm the body, improve emotional regulation, and support long-term healing.

👉 Book a Functional Neurology Session Today
Let’s work together to reset your system and bring more calm, clarity, and connection into your everyday life.

The tools shared in this guide are inspired by the Functional Neurology training and mentorship I’ve received from Nick Moss. With thanks and respect for the knowledge passed on. @functionalneurohealth

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