Category Archives: the Unfinished Response

The Unfinished Response

What is Trauma? The Unfinished Response

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What if trauma isn’t only what happened?

Trauma is commonly understood as the lasting impact of something overwhelming that happened to us.

The event matters. The circumstances matter. What happened before, during and afterwards matters.  But what if the event itself is not the trauma?

What if trauma has more to do with what the nervous system was unable to finish?

When the nervous system detects threat, it automatically organises a response.  It may turn away, move back, block, resist, push, run, fight or become still.  These responses are not random. They are organised attempts to prevent harm, protect ourselves, preserve the connection, or survive.

Usually, the response does its job and the nervous system moves on.  But sometimes something prevents that from happening.

We may be too young to act.
We may be physically overpowered or trapped.
Another defensive response may take priority.
Protecting ourselves may carry consequences we cannot afford.
Preserving an important relationship may matter more than protest, resistance or escape.

The event may end.  But something the nervous system organised to do has not.

That unfinished response can continue influencing physiology, perception, behaviour and prediction long after the original circumstances have changed.

This is the central proposition of the Biological Completion Model™:

Trauma is the persistence of an unfinished biological defensive response.

What we later call anxiety, hypervigilance, avoidance, shutdown, reactivity, tension or other trauma-related symptoms may be expressions of that continuing organisation.

The symptoms matter.  But they may not be the trauma itself.  And if that is true, it changes the question from “how do we reduce the symptoms?” or “how do we calm the nervous system?” to:

“What is this nervous system trying to do?”

That question is the beginning of nervous system logic.

The Prediction That Didn’t Update

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The nervous system is not simply reacting to what is happening.

It is predicting what is likely to happen next.

Prediction is one of the ways a living system prepares for what is coming. It allows us to respond before a situation has fully unfolded rather than waiting until harm has already occurred.

If a certain sound has preceded danger before, the nervous system becomes alert to that sound.

If speaking up has led to punishment, it prepares for the consequences of speaking.

If closeness has repeatedly ended in rejection, it begins organising before rejection occurs.

The prediction shapes what we notice, how we interpret what is happening and how the nervous system prepares the body to respond.

Usually, predictions are tested against experience, and updated:

Something is expected.
Something happens.
The nervous system receives new information.
The prediction changes.

But what happens when the nervous system organises a defensive response and that response never succeeds or completes?

The event can end.
The circumstances can change.
The conscious mind can understand that the danger belongs to the past.
And yet the prediction remains.

This is one reason the logic of the nervous system can appear irrational from the perspective of the conscious mind.

The mind says: “This person is not my former partner.”
The nervous system predicts: “If I protect myself, the same thing will happen.”

The mind says: “That is only a helicopter. There is no fire.”
The nervous system predicts danger because that sound has previously been associated with fire.

Both are working from information. But the information is different.  The mind is working from the present situation.  The nervous system is working from what the previous outcome taught it to expect.

A prediction does not change simply because we know, intellectually, that the present is different.  It changes when the nervous system receives biological evidence that a different outcome is possible.

Until then, it continues preparing for what it expects.

That preparation can appear as anxiety, hypervigilance, tension, avoidance, reactivity, shutdown or an inability to act freely in situations that resemble the original threat.

These responses are often described as living in “survival mode.”  But survival mode is the consequence.

The prediction that didn’t update is the reason.

This also helps explain why symptom reduction and prediction update are not the same thing.

We can become calmer.
We can learn to regulate activation.
We can understand our history.
We can know that the present situation is different.
All of those things can be valuable.
But the nervous system is still asking a more fundamental question: “can the outcome be different this time?”

If the prediction remains unchanged, the same organisation can return when the relevant conditions appear again.

This is why the Biological Completion Model pays attention not only to what happened, but to what the nervous system continues to expect.

The question becomes: “what prediction is organising this response?”

Because sometimes the threat is long over, but the prediction is not.

And until the nervous system receives new biological evidence, it continues to organise as if the threat still exists.

Beyond Fight, Flight and Freeze

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The Preventative Response

Over years of working with clients, I noticed a recurring phenomenon that I initially had no explanation for.

People could escape a situation.  They could avoid the harm altogether.  Sometimes the feared outcome never actually occurred.

And yet something persisted.

The nervous system continued responding as though the threat remained.

What I eventually began to notice was that the familiar fight, flight and freeze responses were not always where defence began.

There was often an earlier response.

A movement away.
A turn of the head.
An impulse to block or interrupt.
A change in posture.
A subtle attempt to prevent what was happening from progressing any further.

I came to call this the preventative response.

These responses can be so small that neither the person nor the practitioner recognises their significance.  Attention naturally goes to the larger event — the fear, the escape, the fight, the freeze, the aftermath.

But the nervous system may have begun organising defence much earlier.

Recognising that changed the questions I was asking.

Instead of looking only at how a person survived what happened, I became interested in what their nervous system had been attempting to do before survival became necessary.

That observation eventually became an important part of the Biological Completion Model.

It also raised a much bigger question:

What happens when an early defensive response never gets to do what it was organised to do?

That question led somewhere I did not expect.

And it changed how I understood why trauma can persist.

How We Define Trauma Determines What We Treat

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Definitions and diagnoses matter.

How we define something determines the action we take.

If we develop health symptoms, we try to identify the problem so that we can treat it. If a child develops unusual behavioural issues, we try to understand what is happening so that we can help the child. We understand that treating or masking symptoms does not resolve the underlying condition.

So how is trauma commonly defined?

Some define it as the event.

Some define it as the emotional and physical response to, and lasting effects of, an overwhelming event.

Some define it as trapped survival energy.

Each definition directs us towards a different solution strategy.

If trauma is the event, we focus on what happened.

If trauma is the lasting emotional or physiological effect of the event, we focus on those effects.

If trauma is dysregulation, we focus on regulation.

If trauma is trapped energy, we focus on releasing energy.

An incomplete definition directs us towards an incomplete solution.

We know that the same event affects people differently.

Insight does not complete a defensive response.

People can become highly skilled at regulating their nervous system and still experience the same triggers, anxiety, hypervigilance, avoidance or reactivity.

So what is sustaining the pattern?

Living systems are organised around maintaining functional integrity.

A signal identifies a requirement.  Action is organised to meet that requirement.  When the action succeeds, the system no longer needs to organise around it.

Thirst signals a need for water. We drink. The requirement is met.
Hunger signals a need for food. We eat. The requirement is met.
Threat follows the same biological logic.

When the nervous system detects threat, it organises defensive action intended to prevent harm, protect us or help us survive.

When that action cannot succeed or complete, the event can end while the defensive response remains unfinished.

This is the definition at the centre of the Biological Completion Model:

Trauma is the persistence of an unfinished biological defensive response.

That definition changes what we look for.  The symptoms are not the trauma.  They are expressions of the unfinished response.

And the central question changes from: “how do we reduce or manage these symptoms?” to “what is this nervous system trying to do?”

We have spent decades asking,  “what happened?”

This definition of trauma also requires us to ask, “what didn’t get to happen?”

Because how we define trauma determines what we try to treat.