EMDR has the strongest evidence base and shorter course length. Somatic experiencing reaches material EMDR sometimes cannot, particularly pre-verbal trauma and high-dissociation presentations. Most trauma clinicians use both.
Both EMDR and Somatic Experiencing are body-first trauma approaches. They differ in evidence-base size, course length, and which trauma presentations they best fit.
EMDR is VA-recommended first-line for PTSD with large effect sizes for single-incident trauma. Somatic Experiencing has a smaller research base but reaches material EMDR sometimes cannot, particularly pre-verbal trauma and trauma in patients with high dissociation. Most trauma-trained clinicians use both and select based on case features.
| Criterion | EMDR | Somatic Experiencing |
|---|---|---|
| Evidence base | VA/WHO/APA first-line for PTSD; large effect sizes for single-incident | Smaller RCT base; growing evidence for complex presentations |
| Course length (single-incident) | 8–12 sessions | 5–15 sessions typical |
| Course length (complex) | 6–18 months with phase-based stabilisation | 6 months to 2 years |
| Best fit | Single-incident adult trauma with verbal-memory access | Pre-verbal trauma; high dissociation; "frozen" presentations |
| Verbal narrative required | Memory image required; detailed verbal description not required | Minimal narrative; primarily attention to body sensation |
| Practitioner training | EMDRIA-certified after intensive training programme | Somatic Experiencing International 3-year certification |
| Cost (per session) | $150–300 (clinical psychology rates) | $120–250 |
| Combinable with other approaches | Often used with somatic experiencing for complex trauma | Often used with EMDR for complex trauma |
For single-incident adult trauma (assault, accident, single severe event): EMDR is typically first-line. The course is shorter, the evidence is stronger, and the protocol is well-suited to this trauma type.
For pre-verbal trauma (before age 4–5) or trauma in patients with high dissociation: Somatic Experiencing often reaches material EMDR cannot. The verbal-memory access EMDR uses is not available for pre-verbal material.
For complex PTSD from sustained childhood trauma: a phase-based approach works best. Stabilisation through Somatic Experiencing (or trauma-informed yoga). Trauma processing through EMDR. Integration through identity-level work. Single-modality approaches usually fall short for complex presentations.