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“The body keeps the score” has become one of the most recognized phrases in trauma culture (1). It serves as the title for courses, continuing education programs for therapists, and lectures for the general public. The idea that the body keeps the score is especially compelling because many trauma survivors experience trauma in the body: clenched jaw, racing heart, frozen posture. The suffering is vivid, physical, and noticeable.
A recent paper by Kotler and colleagues in Frontiers in Systems Neuroscience has challenged the familiar metaphor (2), proposing that trauma is more about prediction than physical storage. So how do we integrate this new understanding presented by Kotler and colleagues with the lived experiences of many trauma survivors? Does this paper invalidate their experiences?
The Brain Is a Prediction Machine
The brain is not a passive sensory machine, waiting for the world to activate it. It is a prediction machine. It uses prior experiences to anticipate what will happen next. Based on these predictions, the brain gets the body and the nervous system ready for the next moment. In predictive coding, the brain does not simply ask what is happening or wait for it to occur. It asks, “Given what I have lived through, what is most likely happening right now?” That prior expectation shapes perception before conscious and non-conscious processing of what is actually happening unfolds. This is called predictive coding, and it is a very top-down brain effort.
Precision and the Competition Between Prediction Models
What happens when the brain holds competing and opposite priors: one predicting threat and thus preparing the body for danger, and one predicting safety and preparing the body for safety? The brain selects the model that has higher “confidence” or “precision.” The prediction with the highest confidence wins. Accordingly, the brain prepares the body for the anticipated present moment.
Precision is important because the brain does not treat all information and priors equally. It weights some signals more heavily than others. But, what if the brain predicted wrong? In other words, if the bottom-up sensory information from the world does not match what was predicted from the top down. A prediction error occurs. This error happens every time the incoming sensory signals from the present moment mismatch the predicted model’s “anticipated present moment.” In a healthy and flexible system, the brain registers the mismatch and updates how it models the world. It changes confidence weightings of various priors to better inform future predictions.
Predictions shape upcoming biological transactions, and unfolding sensations confirm (or disconfirm) predictions. This loop is ongoing and dynamic.
What Goes Wrong in Trauma?
In trauma, the brain has strong priors (high confidence): The world is dangerous; people are unsafe. These priors inform predictions. Critically, the brain assigns excessive confidence to danger predictions. This “danger” model is used to prepare for the next present moment. The body prepares for a predicted threat, with brain chemicals, hormones, proteins, and metabolic shifts. This is a biologically expensive and unsustainable biological state.
Ignoring prediction errors maintains the trauma. Danger is predicted, but safety is what actually happens. Yet the traumatized brain does not update. It dismisses the mismatch by overweighing the precision of danger priors and underweighting the safety ones. The brain assigns excessive confidence to threat predictions, and it maintains the prior “enduring danger.”
The result: a body excessively prepared for danger. This might manifest as hypervigilance, flashbacks, and avoidance. In a vicious self-fulfilling loop, these very symptoms increase the brain’s confidence in its own danger predictions. Healing stagnates, not because the trauma is stored in the body, but because the nervous system has stopped updating in the face of new evidence.
The person may hear, “You are safe now,” but the nervous system remains locked into, “No, danger is still the most plausible explanation.”
So Why Does It Feel Like the Body Keeps the Score?
Why does it feel like trauma is literally stored in the body? Why does it feel like the brain is too cerebral to understand these deeply somatic ongoing experiences? The felt sense of the trauma is indeed deeply somatic. It lives in the chest, gut, muscles, and bodily organs. So why does it feel this way if the body is not keeping the score?
When the brain’s winning model is “danger is next”, it prepares the body for danger. This preparation includes elevated heart rate, muscle tension, and a hormonal roller coaster. These bodily sensations feed back to the brain, trapping it in the “danger next” loop because “the body is telling me so.” This is a circular inference that maintains a recursive error.
Trauma is not stored in the body. It is a miscalculation of a rigid prediction system.
Not a Storage Problem but a Prediction Problem
Trauma can be understood as a brain that has become too confident in its prediction of danger over safety. The brain continues to generate wrong models for the upcoming present moment, but it is very confident about these models, preparing the body for biologically expensive states.
Trauma is not a storage problem, and the body is not the warehouse. Trauma is a disorder of prediction, a biased and rigid nervous system that overweights threat, underweights safety, and dismisses update notifications.
This reframing has imminent clinical implications. Somatic therapies are correct that the body must be addressed in therapy. But the body must be tackled in treatment as a part of a prediction loop and a brain miscalculation at times. Somatic healing is not the only path forward, nor is it the superior one. The goal is not to excavate trauma from the body. It is to train the excavator driver.
