“The body does not keep the score: trauma, predictive coding, and the restoration of metastability”
For nearly a decade, the idea that “the body keeps the score” has shaped public and clinical understanding of trauma. It is an enticing metaphor—implying that experience is literally inscribed in flesh, that the body bears the scars of what the mind cannot face. Yet recent advances in computational and systems neuroscience reveal that this image, while emotionally compelling, is biologically inaccurate. The body proper does not store trauma; the brain dynamically reenacts it through maladaptive inference. What endures after trauma is not a memory lodged in non-innervated tissue but a collapse of flexibility—a loss of metastability, the brain’s ability to fluidly switch among semi-stable network states.
In computational terms, trauma over-weights the precision of danger priors: the brain assigns excessive confidence to threat predictions, constraining inference based on the prior premise of enduring danger. The result is hypervigilance, flashbacks, and avoidance—symptoms of a system caught in self-confirming predictions. Mathematically, this overconfidence means one cannot escape local minima—in a free energy landscape—that become deeply and precisely engrained (i.e., trapped in a ravine with steep sides, where precision corresponds to the local curvature or steepness).
This rigidity contrasts with a healthy brain’s metastable dynamics, where neuronal networks continually integrate and segregate in response to context. This allows neuronal dynamics to explore multiple (unstable) interpretations of the world. Hellyer and colleagues demonstrated that metastability is a hallmark of cognitive flexibility: the capacity for neural coalitions to assemble transiently and adapt quickly. Using both empirical and computational approaches, Hellyer et al. (2015) showed that reduced metastability arising from damage to the structural connectome was associated with diminished cognitive flexibility and impaired information processing. Trauma erodes this fluidity, trapping the brain in narrow basins of fear and defensive salience. To restore mental health is not about “releasing” stored emotion but reestablishing dynamic equilibrium enabling the brain’s ability to move with graceful agility over a landscape of beliefs, commitments and intentions.
The landscape in question is a free energy landscape where every belief is equipped with a measure of its plausibility. In this view, making sense of the world, and our bodies, entails a process of (Bayesian) belief updating that can be read as minimizing free energy or, in the vernacular, finding explanations for our sensations that contain the least surprise and the most plausibility.
If the old story held that “the body keeps the score,” the emerging narrative elides somatic chauvinism.
It’s subtler, and more hopeful.
The body does not keep the score; the brain keeps predicting it.
When prediction becomes too rigid, experience repeats itself, not because it is stored, but because it cannot yet be reinterpreted. Flow—and other states that expand metastability—offer the nervous system a chance to update its model of the world, to reassign precision where it belongs, and to rediscover safety in uncertainty.
Healing, in the end, is not the erasure of what happened, but the return of movement—within the mind, within the networks, within action, within life itself.
Surtil : 