Somatic memory: how the body remembers

Somatic memory is the idea that an overwhelming experience can leave a trace in the body, tension, a racing heart, a flinch, that resurfaces as sensation without any clear conscious memory attached to it. Psychiatrist Bessel van der Kolk used this phrase, describing how the nervous system can hold an experience long after the mind loses its story.

Where does the term come from?

The word somatic simply means “of the body.” Van der Kolk used it in a 1994 paper in Harvard Review of Psychiatry, which later lent its title to his 2014 bestseller. Around the same time, Peter Levine’s In an Unspoken Voice (2010) and Pat Ogden’s Trauma and the Body (2006) built entire clinical approaches on the same premise. Levine’s Somatic Experiencing and Ogden’s Sensorimotor Psychotherapy both hold that overwhelming experience can imprint itself as posture, muscle tension, or a hair-trigger startle response, not only as something you consciously recall.

Is somatic memory backed by science?

Not as a formal memory system. Mainstream research instead splits memory into two types: explicit memory (conscious and narrative) and implicit memory (nonconscious, body- and emotion-based). A 2022 review in NeuroSci points to the amygdala, the brain’s threat-detector, as the likely source of body-held trauma responses. Stress hormones can blunt the hippocampus, the structure that normally timestamps an experience into a clear story, while the amygdala keeps encoding raw sensory and emotional fragments anyway.

That’s the real mechanism behind “somatic memory”: not muscles literally storing events, but a nervous system holding an imprint your conscious mind never fully filed away. The related idea of a felt sense, a bodily sense of a situation before you have words for it, points at the same gap between body-knowing and story-knowing.

How does this connect to EMDR?

EMDR doesn’t stop at the story of what happened; it checks the body too. The eight phases of EMDR include a body scan: after a memory has been reprocessed, EMDRIA notes the clinician checks for leftover physical tension, which is exactly the kind of sensation-based residue “somatic memory” describes. Bilateral stimulation, the left-right rhythm at EMDR’s center, works with these body-and-emotion pathways rather than relying on talking alone.

What helps when a somatic memory surfaces?

Start with stabilization, not analysis: grounding yourself keeps you inside your window of tolerance, the zone where sensation stays manageable instead of overwhelming. Go slow, working with one recent, specific sensation at a time in short sessions rather than your whole history at once. If distress rises above a 7 out of 10 and won’t settle, stop, ground yourself again, and consider working with a licensed professional instead of pushing through alone.

EmEase, a self-guided EMDR app, offers the guided version of this technique at app.emease.com.