States of the nervous system
From safety, through mobilisation, to withdrawal.
Our nervous system does not respond to every situation in the same way. Depending on how we perceive our surroundings and what resources we have at a given moment, we may experience calm and openness, readiness for action, or a need to withdraw.
Stephen Porges's Polyvagal Theory describes a map of autonomic nervous system states, referring to three functionally distinct circuits associated with regulation, mobilisation, and immobilisation. This perspective helps us better understand why we think, feel, and behave differently in different circumstances.
Three main response patterns
1. Safety and social engagement
When we can be in contact with ourselves and others
In this state it is easier for us to build relationships, listen, see different perspectives, and respond flexibly to change. We may feel curiosity, openness, and greater ease in action.
It is a state that fosters social engagement, learning, and collaboration. It does not mean an absence of difficulties or unpleasant emotions, but greater access to the resources needed to deal with them.
2. Mobilisation
When the body prepares us for action
In the face of a challenge, pressure, or threat, we may feel a rise in energy, tension, and vigilance. The heart may beat faster, breathing may quicken, and attention may focus on the problem.
Mobilisation helps us act, defend boundaries, solve problems, and respond to difficult situations. But when it lasts too long or is too intense, we may experience anxiety, irritability, haste, and overload.
3. Withdrawal and immobilisation
When the body limits activity
When a situation is perceived as overwhelming and mobilisation is not enough or not available, we may experience a drop in energy, numbness, disconnection, or a need to hide from the world.
It is then harder to make decisions, initiate action, and stay in contact with others. Sometimes a sense of helplessness or emptiness appears.
Such a response is not a sign of weakness or a lack of motivation. It may be the body's way of coping with excessive strain.
How do we move between states?
Nervous system responses are not fixed personality traits. They change depending on the situation, our experiences, the condition of the body, and the support available.
We may move from safety to mobilisation when a challenge appears. We may also experience withdrawal when the strain becomes too great. In favourable conditions we gradually regain energy, connection, and a sense of agency.
This does not always happen in a linear way. We may feel several responses at once, and returning to greater balance may take time.
There are no good or bad states
Each of these patterns serves a particular function. Mobilisation helps us act, withdrawal can limit overload, and the state of safety fosters connection and flexibility.
Difficulty arises when we lose the ability to adapt our response to the situation, or find it hard to return to a state that supports our functioning.
The goal is not to stay calm all the time. It is greater flexibility of the nervous system — the ability to engage, mobilise for action, and rest as needed.
From understanding to practice
Recognising your own reactions is the first step towards understanding yourself better. Instead of asking “What is wrong with me?”, we can start with the question:
“What is happening in my body right now, and what do I need at this moment?”
This shift in perspective can help us treat ourselves more gently, understand others better, and make more conscious use of ways that support regulation.
In the following sections you will learn about the role of the vagus nerve, neuroception, and co-regulation, and ways of applying this knowledge in everyday life.