What Is EMDR Therapy? A Therapist’s Plain-English Explanation

EMDR stands for eye movement desensitization and reprocessing. It uses guided bilateral stimulation while you briefly hold a distressing memory in mind, lowering the emotional charge that memory carries. This guide covers the model underneath it, the eight phases, what a first session involves, and the four myths that keep people from trying it.

If a therapist has suggested EMDR therapy, you have probably heard it described as "the eye movement thing" and been left with more questions than answers. It sounds strange. Watching a hand move back and forth does not obviously connect to a memory that still makes your chest tighten years later.

There is a real clinical model underneath it, and it is easier to follow than the name suggests. This guide explains what EMDR therapy is, how the eight phases work, what a first session actually involves, and how to tell whether it is worth asking your provider about.

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What is EMDR therapy?
EMDR stands for eye movement desensitization and reprocessing. It is a structured psychotherapy that uses guided bilateral stimulation, usually side to side eye movements, while you briefly hold a distressing memory in mind. The goal is to lower the emotional charge that memory carries. Unlike most talk therapy, EMDR does not require describing the event in detail.

This article is for educational purposes only and is not a substitute for professional diagnosis or treatment. Individual results vary.

Why EMDR Therapy Exists

Most therapy works through language. You describe what happened, you examine the beliefs that formed around it, and understanding does the work. That approach helps a great many people. It also stalls for some, particularly when the memory is stored less as a story and more as a physical alarm.

EMDR was built for that second situation. It targets how a memory is filed rather than how well you can narrate it, which is why people sometimes describe progress in EMDR that years of talking did not produce.

How Common Trauma and PTSD Are

Post-traumatic stress is not a rare diagnosis. According to the VA National Center for PTSD, about 6 of every 100 people in the United States will have PTSD at some point in their lives, and about 5 of every 100 adults have it in a given year. The lifetime figure is roughly 8 of every 100 women and 4 of every 100 men.

Those numbers cover diagnosed PTSD only. Plenty of people carrying a difficult event never meet full criteria and still find the memory shaping how they sleep, drive, or handle conflict. Redefine's trauma treatment programs work with both groups.

6 in 100
Lifetime PTSD
About 6 of every 100 people in the United States will have PTSD at some point in their lives, and about 5 of every 100 adults have it in any given year. EMDR is one of the treatments recognized for it by major health bodies.
Source: VA National Center for PTSD

Who EMDR Is For

EMDR is best known for PTSD treatment, and its use extends further. Cleveland Clinic lists trauma-linked anxiety, depression, dissociative conditions, obsessive-compulsive presentations, and acute stress disorder among the conditions it is used for. It is often raised when talk therapy has stalled on one specific event.

Fit is not about how severe someone's history looks from the outside. It is about whether a memory still behaves as though it is happening now. If depression is the primary concern, our post on how EMDR is used for depression covers that application in more depth.

How EMDR Therapy Works

EMDR rests on a clinical framework called the Adaptive Information Processing model, developed by psychologist Francine Shapiro, whose first clinical trial of the method was published in 1989. The model holds that the brain normally digests difficult experiences the way the body digests a meal, and that some experiences get stuck partway through.

A memory stored that way keeps its original charge. The sounds, the images, and the body sensations stay wired together, so a small present-day trigger can fire the whole package as though the event were current. EMDR is an attempt to restart that stalled processing.

The Working Model, Step by Step
How clinicians describe what EMDR is doing during a reprocessing session.
01
A memory gets stuck
Under high distress, an experience can be stored without being fully processed. The images, sounds, beliefs, and body sensations stay bundled together in their original form.
02
The present keeps triggering it
A smell, a tone of voice, or a location can activate the bundle. The nervous system responds as though the danger is happening now rather than filing it as something that already ended.
03
Bilateral stimulation is added
You hold the memory in mind briefly while following a set of side to side eye movements, alternating taps, or alternating tones. Sets are short, and you pause between them.
04
The charge comes down
Across repeated sets, most people report the memory feeling more distant and less physically activating. The event is still remembered. What changes is how loudly the body reacts to it.
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A Quick Note on Bilateral Stimulation

Bilateral stimulation simply means something that alternates between the left and right sides of your body. In EMDR that is usually following the therapist's fingers or a light bar with your eyes, but alternating hand taps and alternating tones through headphones are also standard options. None of them involve medication or equipment you have to operate.

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If eye movements are uncomfortable or not possible for you, taps and tones are recognized alternatives. Say so, and your therapist will switch.

Why You Do Not Have to Retell the Whole Story

This is the detail that changes most people's minds about trying it. EMDR does not require narrating the traumatic event in detail, and it does not assign homework between sessions. You identify the memory and the belief attached to it, then the processing happens largely in silence.

For someone who has avoided therapy because they cannot face saying the words out loud, that difference matters more than any mechanism explanation.

The Eight Phases of EMDR

EMDR is a protocol, not a single technique, and the reprocessing everyone pictures is only one part of it. The standard sequence runs across eight phases:

  1. History taking. Your therapist gathers your background and identifies which memories to target.
  2. Preparation. You learn grounding and stress management skills before any memory is touched.
  3. Assessment. You name the target memory, the negative belief tied to it, and the positive belief you want instead.
  4. Desensitization. Sets of bilateral stimulation while the memory is held in mind, with pauses to check in.
  5. Installation. Strengthening the positive belief so it holds when the memory comes up.
  6. Body scan. Checking for physical tension that is still linked to the memory.
  7. Closure. Returning to a settled state before the session ends, every time.
  8. Reevaluation. Reviewing progress at the next session and choosing what comes next.

Phases 1 and 2 are stabilization work. That is why a competent EMDR therapist does not process a memory on your first visit, and why anyone promising a same-day resolution is worth questioning.

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Did You Know?
EMDR is recognized as a treatment for PTSD by the World Health Organization, the American Psychological Association, and the U.S. Department of Veterans Affairs, among others.

What a First EMDR Session Feels Like

Your first appointment usually looks like an intake. You talk through your history, your therapist explains the model, and together you decide which memory to work toward. Nobody asks you to relive anything on day one.

When reprocessing does begin, the room is quieter than people expect. You follow a moving point with your eyes for 20 to 30 seconds, stop, and your therapist asks what came up. Then you do it again. Some sets bring a wave of feeling, some bring almost nothing, and both are normal.

Session Length and How Many Sessions

A standard EMDR session runs 60 to 90 minutes. Cleveland Clinic reports that a single-event trauma commonly takes 3 to 6 sessions, while complex or repeated trauma more often takes 8 to 12 or more, spread across several weeks to a few months.

Those are typical ranges, not a schedule anyone can promise you in advance. Individual results vary, and a good therapist will revise the plan as the work reveals what is actually there.

What Happens Between Sessions

Closure is a real phase, not a courtesy. Your therapist brings you back to a settled state before you leave, even if a memory is only partly processed. You may be asked to note anything that surfaces during the week, which is observation rather than homework.

Feeling tired or emotionally raw for a day or two after a reprocessing session is common. Tell your care team if that lands harder than expected, because the pacing can be adjusted.

How EMDR Fits Alongside Other Therapies

At Redefine Wellness & Treatment, EMDR is one of more than 20 treatment modalities, and it is usually delivered alongside others rather than as a standalone product. Someone might do EMDR in the same week as somatic work and neurofeedback, with a therapist coordinating how the pieces interact.

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EMDR
Uses bilateral stimulation to reprocess specific stuck memories. Structured across eight phases, with stabilization work before any reprocessing begins.
EMDR therapy at our Scottsdale center
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Brainspotting
Uses a fixed eye position rather than movement to access where a memory is held. Often considered when EMDR feels too structured or too fast for someone.
How Brainspotting and EMDR differ
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Somatic Experiencing
Works through physical sensation and nervous system regulation rather than memory content. Frequently paired with EMDR to build tolerance before reprocessing.
Somatic Experiencing
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Neurofeedback
Non-invasive brain training that shows you your own activity in real time. Used to help the nervous system settle so that therapy work is easier to take in.
Neurofeedback

Common Myths About EMDR

EMDR attracts more misconceptions than most therapies, partly because the eye movements look unusual and partly because it is often described secondhand. Four come up repeatedly.

Myth: EMDR Is Hypnosis

It is not. During EMDR you stay awake, aware, and able to stop at any point. You are not put into a trance, you are not made suggestible, and you remain in control of what you engage with and when.

Myth: EMDR Erases Your Memories

EMDR reduces the emotional charge a memory carries. It does not delete the memory. People who have completed EMDR still remember what happened. What tends to change is that recalling it no longer sets off the same physical alarm.

Myth: EMDR Is Only for Combat Veterans

The Department of Veterans Affairs is one endorser among several, alongside the World Health Organization and the American Psychological Association. EMDR is used across the general adult population for PTSD and trauma-linked anxiety, depression, and other presentations.

Myth: One Session Will Fix Everything

The protocol runs across eight phases, and the first two are preparation before any memory is reprocessed. Anyone promising a single-session resolution is describing something other than standard EMDR. Individual results vary, and no ethical provider guarantees an outcome.

When to Talk to a Professional About EMDR

EMDR is worth raising with a licensed clinician when a specific memory still produces a physical stress response, when avoidance has started shaping ordinary decisions, or when months of talk therapy have circled the same event without shifting it.

It is also a reasonable question if you are already in treatment and progress has plateaued. Adding a different mechanism is a normal clinical adjustment, not an admission that anything failed.

Signs EMDR May Be Worth Asking About

None of the items below diagnose anything. They are the patterns that most often lead a therapist to suggest trauma reprocessing rather than more of the same approach.

Does This Sound Familiar?
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This is not a diagnostic tool. If several of these resonate, it may be worth exploring treatment options.
Take the Level of Care Assessment

Questions to Ask an EMDR Therapist

Ask what EMDR training the clinician has completed. Ask whether they follow the full eight-phase protocol. Ask how they handle stabilization before reprocessing begins, and what they do if a session brings up more than expected.

A clinician who answers those three questions clearly is telling you a great deal about how the work will be paced. If distinguishing your situation is the harder question, our post on the difference between PTSD and complex PTSD is a useful starting point.

Not sure which level of care fits?
Our clinical team can help you sort out where to start.
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How EMDR Is Delivered at Redefine

Redefine Wellness & Treatment is a Joint Commission accredited outpatient mental health center in Scottsdale, Arizona. EMDR is offered inside our programs rather than as a standalone service, including our intensive outpatient program, which meets 3 days a week for 9 to 12 hours, and our partial hospitalization program and private retreats.

Redefine is an out-of-network provider. Coverage and reimbursement vary by plan, so verify your benefits before starting. In-person programs run Monday to Friday, 9 a.m. to 5 p.m., from our single location at 8245 N 85th Way, Scottsdale, AZ 85258.

Common Questions

A standard EMDR session runs 60 to 90 minutes. Cleveland Clinic reports that single-event trauma commonly takes 3 to 6 sessions, while complex or repeated trauma more often takes 8 to 12 or more, spread across several weeks to a few months. Individual results vary.

EMDR is recognized for PTSD by the World Health Organization, the American Psychological Association, and the U.S. Department of Veterans Affairs. The EMDR Institute, founded by the method's developer, reports that 84 to 90 percent of single-trauma survivors no longer met PTSD criteria after three 90-minute sessions.

History taking, preparation, assessment, desensitization, installation, body scan, closure, and reevaluation. The first two phases are stabilization work, which is why a competent EMDR therapist does not reprocess a memory during your first visit.

No. During EMDR you stay awake, aware, and able to stop at any point. You are not placed in a trance and you remain in control of what you engage with and when. The eye movements are a focus task, not an induction.

EMDR does not require describing the event in detail or doing homework between sessions. Brief distress during reprocessing is normal, which is exactly why phases 1 and 2 build grounding skills first and why every session ends with closure.

Yes. Cleveland Clinic lists trauma-linked anxiety, depression, dissociative conditions, and acute stress disorder among the conditions EMDR is used for. Whether it fits your situation is a clinical judgment your provider makes with you.

Redefine Wellness & Treatment is an out-of-network provider. Coverage and reimbursement vary by plan, so verify your benefits before starting. Our team can walk you through what your specific plan looks like on a first call.

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Resources & References
Sources cited in this article
1
U.S. Department of Veterans Affairs, National Center for PTSD. How Common is PTSD in Adults?
2
Cleveland Clinic. EMDR Therapy: What It Is, Procedure & Effectiveness.
3
EMDR International Association (EMDRIA). About EMDR Therapy.
4
EMDR Institute. What is EMDR? Note: the EMDR Institute was founded by the method's developer and is not an independent body.
5
American Psychological Association. Eye Movement Desensitization and Reprocessing (EMDR) Therapy. APA Clinical Practice Guideline for PTSD.
Wondering whether EMDR fits your situation?
Redefine Wellness & Treatment offers EMDR alongside more than 20 other modalities in Scottsdale, Arizona. Call (888) 546-5580 or use our contact form to talk through what your care could look like.
📍 Scottsdale, Arizona

Written By

Brenna Gonzales, LPC, SEP, CMAT

Brenna Gonzales is a Licensed Professional Counselor (LPC), Somatic Experiencing Practitioner (SEP), and Certified Multiple Addiction Therapist (CMAT) specializing in trauma recovery, nervous system regulation, and evidence-based mental health treatment at Redefine Wellness & Treatment.

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Last Review & Update: August 7, 2026

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