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Understanding Polyvagal Theory: The Nervous System's Role in Safety and Connection

When we feel anxious, shut down, or overwhelmed, it can be hard to understand why. Often, these responses are not just "in our head." They are deeply rooted in the body's nervous system. Polyvagal Theory, developed by Dr Stephen Porges, offers a compassionate and science-based way of understanding how our nervous system shapes our experience of safety, danger and connection.

As a clinical psychologist, I often draw on Polyvagal Theory to help clients make sense of their emotional and physiological responses, especially those shaped by trauma, chronic stress, or early relational wounds.

What is Polyvagal Theory?

At its heart, Polyvagal Theory is about how the autonomic nervous system responds to signals of safety or threat. It explains why we sometimes feel calm and open, and other times anxious, frozen, or disconnected, even without any obvious external danger.

Dr Porges' key insight was that the vagus nerve, a central part of the autonomic nervous system, has three different pathways, each linked to a different state of being.

1. Social engagement (ventral vagal). This is our safe and connected state. We feel calm, curious and open to others. Our heart rate is regulated, our facial muscles are expressive, and we can think clearly and engage in meaningful relationships.
2. Mobilisation (sympathetic activation). This is the fight or flight state. We feel anxious, restless, or irritable, and the body prepares to respond to perceived danger. This is a normal part of our survival system, but it can become distressing when chronically activated.
3. Shutdown (dorsal vagal). This is the freeze or collapse response. We may feel numb, hopeless, spaced out, or disconnected. This state can be protective during overwhelming situations, especially in trauma, but it may persist when not processed.

Why this matters in therapy

Polyvagal Theory gives us a language for what is happening inside. When clients say, "I know I'm safe but I don't feel safe," or "I just shut down and can't think straight," this theory helps us understand those experiences without blame or shame.

Here is how it can support the healing process.

• Increased self-awareness. Learning to recognise which state you are in helps you respond with more compassion and care toward yourself.
• Practical regulation tools. We can use tailored strategies, such as grounding, breathwork, or co-regulation with others, to help shift your nervous system toward safety.
• Trauma-informed treatment. Polyvagal Theory aligns closely with therapies like EMDR, parts work (IFS), and somatic approaches, helping us safely access and process deeper wounds.

How we work with the nervous system

In my work, I integrate Polyvagal Theory into therapy in gentle and empowering ways.

• Helping clients map their own nervous system states and notice patterns.
• Exploring personal cues of safety and danger, often shaped by early experiences.
• Using body-based tools to support emotional regulation and grounding.
• Encouraging connection with others, noticing when it feels safe, and why it sometimes doesn't.

Final thoughts

Your nervous system is not broken. It is trying to protect you, even when it feels like it is working against you. Understanding Polyvagal Theory can be a powerful step in learning to listen to your body, create new pathways for safety and connection, and move toward deeper healing.

If you are curious about how this approach might support you, feel free to reach out or book a free consultation call.