What is the difference between Somatic Experiencing and EMDR?

Both Somatic Experiencing (SE) and Eye Movement Desensitization and Reprocessing (EMDR) emerged from the recognition that trauma lives in the body as much as in the mind, and that talking about what happened is often insufficient — sometimes actively counterproductive — for resolving it. Yet the two approaches differ substantially in their theory of what trauma is, where it lodges, and what the therapeutic action actually consists of.

The theory of trauma. SE, developed by Peter Levine, understands trauma as a biological event: a survival response that was mobilized but never completed. When an animal prepares to fight or flee and cannot, the enormous energy generated for that action becomes frozen in the nervous system. As Payne, Levine, and Crane-Godreau (2015) describe it, "trauma occurs when these implicit memories are not neutralized. The failure to restore flexible responsiveness is the basis for many of the dysfunctional and debilitating symptoms of trauma." The body is literally holding a snapshot of an incomplete defensive action — muscles tensed for a blow that was never struck, legs primed for a run that never happened. Healing, on this account, means completing what the body started.

EMDR, developed by Francine Shapiro, works from a different premise: that traumatic memories are stored in a dysfunctional, unprocessed form, fragmented rather than integrated into the brain's normal narrative memory. The therapeutic task is to activate those frozen memory networks while simultaneously engaging bilateral sensory stimulation — typically eye movements — so that the brain can do what it would ordinarily do during REM sleep: integrate, contextualize, and file the experience as past. Van der Kolk (2014) describes the result in one patient's words: "Before, I felt each and every step of it. Now it is like a whole, instead of fragments, so it is more manageable."

EMDR loosens up something in the mind/brain that gives people rapid access to loosely associated memories and images from their past. This seems to help them put the traumatic experience into a larger context or perspective.

The direction of processing. SE is explicitly bottom-up: it begins with interoception and proprioception — the felt sense of the body's interior and its position in space — and works upward toward cognition and narrative only after the nervous system has been sufficiently regulated. It specifically avoids direct, intense evocation of traumatic memories, approaching them "indirectly and very gradually" (Payne et al., 2015). The central techniques — titration (touching the smallest possible drop of traumatic arousal), pendulation (moving rhythmically between distress and resource), and discharge (allowing the body's survival energy to complete and release) — are all oriented toward restoring what Levine calls the nervous system's natural "reset."

EMDR, by contrast, asks the client to hold the traumatic image, the associated negative cognition, and the body sensation simultaneously in awareness while the bilateral stimulation proceeds. The client is not shielded from the memory; they are asked to observe it from a stabilized stance — what Shapiro (2001) calls the "mindful experiencing/being" mode, in which "feelings, sensations, and thoughts are directly sensed as aspects of subjective experience, rather than being the objects of conceptual thought." The eye movements or taps appear to prevent the client from being flooded while keeping the memory accessible enough to process.

What each treats best. The two approaches also differ in their scope. SE was originally designed for shock trauma — discrete, overwhelming events in otherwise intact adults — and its nine-step protocol is built around that model. EMDR has been extensively studied across a wide range of trauma types and has demonstrated particularly strong results for adult-onset PTSD; van der Kolk's (2014) comparative trial found 73 percent of adult-onset PTSD patients effectively cured after eight months, compared with 25 percent of those with childhood abuse histories. Both approaches acknowledge that complex developmental trauma — early, relational, chronic — requires more than either method alone can provide. Laurence Heller's NARM model, which builds on SE, adds explicit attention to attachment, identity, and relational dynamics that SE's original scope did not address (Heller, n.d.).

The shared ground. Despite these differences, SE and EMDR share a crucial commitment: neither asks the client to narrate the trauma in detail as the primary therapeutic act. Both work in the present moment — tracking what is happening in the body and nervous system now in response to the memory, rather than reconstructing the past as story. Both use the concept of titration or pacing to prevent retraumatization. And both understand that the goal is not desensitization in the behavioral sense — dulling the response — but genuine integration: the memory becoming, as one of van der Kolk's patients put it, "a real memory, but more distant."

Sources Cited

  • Payne, Peter, Levine, Peter A., and Crane-Godreau, Mardi A., 2015, Somatic Experiencing: Using Interoception and Proprioception as Core Elements of Trauma Therapy
  • van der Kolk, Bessel, 2014, The Body Keeps the Score: Brain, Mind, and Body in the Healing of Trauma
  • Shapiro, Francine, 2001, Eye Movement Desensitization and Reprocessing (EMDR): Basic Principles, Protocols, and Procedures
  • Levine, Peter A., 2010, In an Unspoken Voice: How the Body Releases Trauma and Restores Goodness
  • Heller, Laurence, n.d., Healing Developmental Trauma: How Early Trauma Affects Self-Regulation, Self-Image, and the Capacity for Relationship