Most people who end up researching EMDR have already tried something else. Maybe talk therapy helped, but only so far. Maybe they’ve been in and out of CBT for a couple of years, working hard, doing the journaling and the thought records, and still find themselves jolting awake at 2 a.m. from the same nightmare. If that’s you right now, you’re not broken and you’re not beyond help. You’re just not done yet.

EMDR, which stands for Eye Movement Desensitization and Reprocessing, gets described in ways that either sound too clinical to mean anything or too mystical to take seriously. Neither of those captures what actually happens in a session. It’s a structured, eight-phase protocol developed by Dr. Francine Shapiro starting in the late 1980s, and it has decades of research behind it now. The World Health Organization recommends it for PTSD. So does the U.S. Department of Veterans Affairs. That’s not nothing.

Here’s what I tell people when they’re sitting across from me trying to decide whether to try it: the phases aren’t just procedural checkboxes. Each one exists because there’s a real clinical reason it comes before the next. Understanding the shape of the process helps enormously with the anxiety of not knowing what’s coming.

Key takeaways
  • EMDR has 8 distinct phases; most clients spend multiple sessions in phases 3-6 before completing treatment.
  • Bilateral stimulation (eye movements, tapping, or audio tones) is used only in phases 4-6, not the entire process.
  • Trauma processing doesn't begin until the therapist confirms the client has adequate coping skills, usually in phase 2.
  • A single EMDR course can range from 3 sessions for a single-incident trauma to 2+ years for complex trauma histories.
  • EMDR is recognized by the WHO, VA, and APA as an evidence-based treatment for PTSD.

Before the Eye Movements Even Start

I want to address the thing I got wrong when I first started working alongside EMDR clinicians: I assumed the bilateral stimulation (the back-and-forth eye movements, or the tapping, or the audio tones) was basically the whole treatment. A lot of people assume this. It isn’t. The first two phases can take several sessions, and skipping them is how you end up with a client who destabilizes between appointments.

Phase 1: History and Treatment Planning. Your therapist is doing a lot of work here that isn’t immediately visible. They’re asking about your history, your current symptoms, your relationships, your physical health. But underneath that, they’re assessing what clinicians call your “window of tolerance.” That’s the range within which you can process difficult emotional material without either shutting down completely or flooding. They’re also identifying what EMDR calls “targets,” the specific memories or experiences that will become the focus of processing. Not every distressing memory is a target, and a good EMDR therapist will prioritize carefully.

One thing only someone inside this process would notice: the first session often ends and you think, “we didn’t do anything yet.” That feeling is normal and it’s actually a good sign. It means your therapist isn’t rushing.

Phase 2: Preparation. This is where your therapist teaches you stabilization skills, things like the “Safe Place” exercise (building a mental image of somewhere you feel completely at ease), container techniques for tucking difficult material away between sessions, and whatever grounding methods work for your nervous system. The rule I’ve seen good EMDR therapists follow is that they won’t move to active processing until they’re confident you can tolerate distress without falling apart in the parking lot afterward. That confidence has to be earned, not assumed.

The Assessment Phase (Phase 3)

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This one is short in clock time but precise in what it does. The therapist helps you bring a specific target memory into focus and identifies several things with clinical exactness:

  • The image that represents the worst part of the memory
  • The negative cognition: a belief you hold about yourself because of it (“I am helpless,” “I am worthless,” “It was my fault”)
  • The positive cognition you’d rather hold (“I did the best I could,” “I am safe now”)
  • How true that positive belief feels on a scale of 1-7, called the Validity of Cognition or VoC score
  • The emotions that come up, and where you feel them in your body
  • A distress rating from 0-10, called the SUD (Subjective Units of Disturbance) scale

This is meticulous setup work. The numbers matter because they’re how you and your therapist track whether processing is actually moving.

Where the Real Work Happens: Phases 4, 5, and 6

Related video

How to Process Trauma [EMDR techniques] · MedCircle on YouTube

These three phases are the processing core of EMDR, and they often get collapsed in pop-psychology descriptions into just “the eye movement part.” They’re distinct.

Phase 4: Desensitization. The therapist asks you to hold the target image, the negative cognition, and the body sensation in mind simultaneously, then begins a set of bilateral stimulation. In person, that’s often a finger moving back and forth across your field of vision. Telehealth sessions often use a moving dot on the screen, tapping the client’s own knees, or audio tones alternating between ears. You follow the stimulus while staying with whatever comes up internally. Between sets, the therapist checks in briefly: “What do you notice now?” You report whatever’s there, without filtering. The goal of this phase is to reduce the SUD score down toward 0.

What actually happens during desensitization surprises most people. Your mind doesn’t stay on the original memory. Associations surface. Related images, emotions, physical sensations, sometimes memories you’d forgotten, come up and pass through. The therapist’s job is to keep the process moving without steering the content. It’s less like a conversation and more like watching a film reel while someone sits calmly beside you.

A reader, Sarah from Chicago, described it to me this way after her eighth session: “It felt like I was watching the memory through a train window instead of being inside it. The same images, but I wasn’t crushed by them anymore.”

Phase 5: Installation. Once the SUD score is near 0, the therapist shifts focus to the positive cognition identified back in Phase 3. They’ll ask: does that positive belief still feel right, or has something more true emerged through the processing? Sometimes clients arrive at a better positive cognition organically. Then the therapist uses more bilateral stimulation to “install” it, running sets while the client holds the positive belief alongside the (now less charged) memory, watching the VoC score climb toward 7.

Phase 6: Body Scan. Here’s what distinguishes EMDR from purely cognitive approaches. After installing the positive cognition, the therapist asks you to mentally scan your body from head to toe while holding the target memory. Any residual tension, tingling, tightness, or discomfort signals there’s still something to process. If you find something, the therapist runs more bilateral stimulation targeted at that sensation. The session isn’t considered complete until the body scan comes back clear.

The logic here is sound: trauma isn’t just a thought pattern, it’s stored somatically. Bessel van der Kolk’s work (most accessibly laid out in his 2014 book The Body Keeps the Score) supports exactly this. A body scan that still registers distress means the job isn’t finished, even if the SUD looks fine on paper.

Closing Out and Coming Back: Phases 7 and 8

Phase 7: Closure. At the end of every EMDR session, the therapist brings you back to a stable baseline, using the same containment and grounding skills from Phase 2. If processing didn’t complete within the session (which happens often, especially early on), the memory gets figuratively “put away” using a container exercise. The therapist gives you a heads-up: over the next week, you might notice new memories surfacing, vivid dreams, or unexpected emotional shifts. Keeping a simple log, just brief notes on your phone, helps. This isn’t optional. It’s data for the next session.

Phase 8: Reevaluation. Every subsequent session begins here. The therapist checks back on what was processed previously: is the SUD still 0? Does the positive cognition still hold? Has anything new surfaced that needs attention? This phase also serves as the gateway to deciding what target comes next.

How Long Does This Actually Take?

Honest answer: it depends enormously on what you’re bringing in. Here’s a rough comparison based on what clinicians generally report, current as of August 2026:

Trauma TypeEstimated SessionsTypical Phase 4-6 Cycles
Single-incident adult trauma (e.g., car accident, one-time assault)3-12 sessions1-3 targets
Single-incident childhood trauma (isolated event)8-20 sessions3-6 targets
Complex/developmental trauma (ongoing abuse, neglect, multiple events)50-100+ sessionsMany targets; may interweave stabilization throughout
Combat-related PTSD (multiple incidents)20-40 sessions6-15 targets
Phobia or performance anxiety (no trauma history)3-6 sessions1-2 targets

These are rough ranges, not promises. Some people move faster. Complex trauma with dissociation often moves slower, and a well-trained EMDR therapist will adjust the protocol accordingly, sometimes spending months in Phase 2 before any processing begins.

For finding a trained EMDR therapist, the EMDR International Association’s directory is the most reliable starting point, and SAMHSA’s treatment locator can help if cost or access is a barrier. Psychology Today’s therapist directory also lets you filter specifically by EMDR as a specialty.

If you’re doing EMDR work and your therapist has recommended journaling between sessions, something like The PTSD Workbook by Mary Beth Williams and Soili Poijula can be genuinely useful as a companion (affiliate link; the site may earn a small commission if you purchase through it). I’d be cautious about using it as a substitute for therapy, but as a supplement to structured EMDR work, it holds up.

Estimated EMDR session ranges by trauma type
Single-incident adult8 sessions
Single-incident childhood14 sessions
Combat PTSD30 sessions
Complex/developmental75 sessions
Phobia only4 sessions
Source: EMDR International Association clinical guidelines, 2024

Sources

Photo: cottonbro studio via Pexels

This article is for general informational purposes only and does not constitute mental health, medical, or clinical advice. If you are in crisis or experiencing a mental health emergency, please contact the 988 Suicide and Crisis Lifeline (call or text 988) or go to your nearest emergency room. Always consult a licensed mental health professional for care specific to your needs.

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