Eye Movement Desensitization and Reprocessing (EMDR)

What Is EMDR?

Eye Movement Desensitization and Reprocessing, known as EMDR, is an integrative psychotherapy approach developed in 1987 by psychologist Francine Shapiro. Shapiro noticed that certain eye movements appeared to reduce the intensity of disturbing thoughts, and she went on to develop a structured therapeutic protocol around this observation.

EMDR has since become one of the most extensively researched treatments for post-traumatic stress disorder (PTSD). It is recognized as an effective trauma treatment by the World Health Organization (WHO), the American Psychological Association (APA), the U.S. Department of Veterans Affairs, and the International Society for Traumatic Stress Studies. More than 30 randomized controlled trials have demonstrated its efficacy, and it is now considered a first-line treatment for PTSD alongside trauma-focused CBT.

What makes EMDR distinctive is that it does not require you to talk in detail about the traumatic event, complete homework between sessions, or directly challenge your beliefs the way cognitive-behavioral approaches do. Instead, EMDR uses a structured process that includes bilateral stimulation — typically guided eye movements — to help your brain reprocess traumatic memories so they no longer trigger the same level of distress.

How EMDR Works: The Adaptive Information Processing Model

EMDR is grounded in the Adaptive Information Processing (AIP) model, which proposes that the brain has a natural ability to process and integrate experiences. Under normal circumstances, when something happens to you, your brain processes the experience, stores it appropriately in memory, and connects it with other relevant information. You can recall the event without being overwhelmed by it.

However, when an experience is highly distressing or traumatic, this natural processing system can become overwhelmed. The memory gets stored in an unprocessed or "frozen" state — complete with the original images, sounds, thoughts, emotions, and body sensations. When something in the present triggers this unprocessed memory, it can feel as though the trauma is happening again, leading to flashbacks, nightmares, hypervigilance, and other PTSD symptoms.

EMDR aims to restart the brain's natural processing system so that the traumatic memory can be properly integrated. After successful EMDR treatment, you can still recall what happened, but the memory no longer carries the same emotional charge. The disturbing images become less vivid, the negative beliefs about yourself shift, and the physiological distress diminishes.

The exact mechanism behind EMDR is still debated among researchers. The leading theories include:

• Working memory taxation: Bilateral stimulation (such as eye movements) taxes the brain's working memory, making it harder to hold the traumatic image vividly, which reduces its emotional intensity. A 2013 meta-analysis in Clinical Psychology Review provided strong support for this hypothesis.
• Orienting response and REM sleep parallels: The eye movements may mimic the rapid eye movement phase of sleep, during which the brain naturally processes and consolidates emotional memories.
• Interhemispheric communication: Bilateral stimulation may enhance communication between the brain's left and right hemispheres, facilitating the integration of emotional and cognitive processing.

The 8-Phase EMDR Protocol

EMDR follows a structured eight-phase protocol. This structure is essential to the therapy's safety and effectiveness, and a well-trained EMDR therapist will not skip phases.

Phase 1: History Taking and Treatment Planning

Your therapist gathers a comprehensive history, identifies the specific memories, current triggers, and future situations that need to be addressed, and develops a treatment plan. This phase may take one or more sessions depending on the complexity of your history.

Phase 2: Preparation

Your therapist explains how EMDR works, what to expect during processing, and teaches you stabilization and self-regulation techniques — such as the "safe place" visualization, deep breathing, or containment exercises — that you can use if you become overwhelmed during or between sessions. This phase ensures you have the coping resources necessary before processing begins.

Phase 3: Assessment

A specific target memory is selected. Your therapist helps you identify:

• The image that represents the worst part of the memory
• The negative cognition — the negative belief about yourself connected to the memory (e.g., "I am powerless," "It was my fault")
• The positive cognition — the preferred belief you would like to hold (e.g., "I can handle things," "I did the best I could")
• The Validity of Cognition (VOC) scale rating (1-7) for the positive cognition
• The emotions and Subjective Units of Disturbance (SUD) rating (0-10)
• The body sensations associated with the memory

Phase 4: Desensitization

This is the core processing phase. You hold the target memory in mind while simultaneously engaging in bilateral stimulation — most commonly following your therapist's fingers with your eyes as they move back and forth. Other forms of bilateral stimulation include alternating taps on your knees or hands, or auditory tones that alternate between ears.

Sets of bilateral stimulation typically last 20 to 30 seconds. Between sets, your therapist asks you to take a breath and report what you notice — this might be new images, thoughts, emotions, or body sensations. Your therapist then directs you to focus on whatever emerged and begins another set. This process continues until the disturbance level (SUD) drops to 0 or 1.

During desensitization, you may experience a range of responses. Some people notice the memory becoming less vivid or more distant. Others experience waves of emotion that rise and then fall. Still others make new cognitive connections — suddenly understanding the event differently. Your therapist's role is to facilitate this natural processing without directing or interpreting it.

Phase 5: Installation

Once the distress has been reduced, your therapist helps strengthen the positive cognition you identified in Phase 3. You hold the original memory together with the positive belief while engaging in bilateral stimulation, reinforcing the new, adaptive perspective until it feels fully true (a VOC of 6 or 7).

Phase 6: Body Scan

You mentally scan your body while thinking about the target memory and the positive cognition. If any residual tension or discomfort is detected, additional bilateral stimulation is used to process it. The goal is for you to be able to think about the memory without any disturbance in the body.

Phase 7: Closure

Your therapist ensures you are stable before ending the session. If processing is not yet complete for a particular memory, containment techniques are used to help you manage between sessions. You may be asked to keep a brief log of any related thoughts, dreams, or emotions that arise during the week.

Phase 8: Reevaluation

At the start of the next session, your therapist checks whether the treatment effects have been maintained. If the target memory still causes distress, processing resumes. If it has been fully resolved, you move on to the next target in the treatment plan.

Types and Variations of EMDR

While standard EMDR follows the eight-phase protocol described above, several adaptations have been developed:

EMDR Intensives: Rather than weekly 50- to 90-minute sessions spread over months, EMDR intensives compress treatment into longer sessions — typically 3 to 6 hours per day over consecutive days. Research and clinical experience suggest that intensives can produce results comparable to standard delivery in a fraction of the time. This format is particularly appealing for people who want rapid relief, have travel constraints, or find it difficult to maintain momentum with weekly appointments.

Flash Technique: Developed by Philip Manfield, the Flash Technique is a recent addition to EMDR practice used primarily during the preparation and desensitization phases. It allows processing of highly disturbing memories with minimal distress by having the client focus on a positive or engaging memory while the therapist briefly "flashes" attention to the disturbing material during bilateral stimulation. This technique can be especially useful for clients who are too overwhelmed to directly focus on the target memory.

Group EMDR (G-EMDR): Adapted for use in group settings, particularly in humanitarian and disaster response contexts. The EMDR Integrative Group Treatment Protocol has been used internationally following natural disasters, conflict, and mass trauma events.

EMDR for Children and Adolescents: Modified protocols use age-appropriate language and may incorporate drawings, storytelling, or play to engage younger clients. The bilateral stimulation may use tactile buzzers or tapping rather than eye movements.

What a Session Looks Like

A standard EMDR session lasts 60 to 90 minutes, though some therapists offer extended sessions of 90 to 120 minutes to allow more time for processing. Here is what you can generally expect:

1. Opening check-in: Your therapist asks how you have been since the last session and reviews any experiences or observations you noted during the week.
2. Target selection: You and your therapist agree on the memory or issue to work on.
3. Processing: You hold the target in mind while following bilateral stimulation. Your therapist guides you through multiple sets, checking in after each one.
4. Closing: Your therapist helps you return to a state of equilibrium using grounding or containment techniques if needed, and previews what to expect before the next session.

It is common to feel tired after EMDR sessions, and some people notice continued processing in the hours or days following a session — this might show up as vivid dreams, new memories surfacing, or shifting emotions. This is generally a normal part of the healing process.

What Conditions Does EMDR Treat?

EMDR's strongest evidence base is for PTSD, but research and clinical practice have expanded its applications considerably:

• Post-traumatic stress disorder (PTSD): EMDR is a first-line treatment. A landmark study by van der Kolk and colleagues (2007) found that EMDR was significantly more effective than fluoxetine (Prozac) for PTSD, with 75% of adult-onset trauma participants no longer meeting PTSD criteria after treatment.
• Complex trauma and adverse childhood experiences: While more sessions are typically needed, EMDR has shown effectiveness for individuals with extensive trauma histories.
• Anxiety disorders: Including generalized anxiety, social anxiety, panic disorder, and specific phobias. A 2019 meta-analysis in Frontiers in Psychology found EMDR to be effective for anxiety conditions beyond PTSD.
• Depression: Particularly when depressive symptoms are rooted in unprocessed adverse life experiences. A 2020 randomized controlled trial published in Journal of Clinical Medicine found EMDR effective for depression, even without a formal PTSD diagnosis.
• Phobias: EMDR has been used to treat specific phobias, often requiring fewer sessions than traditional exposure-based treatments.
• Grief and loss: EMDR can help process complicated grief reactions, particularly when the loss is associated with traumatic circumstances.
• Performance anxiety and peak performance: Some practitioners use EMDR to address performance blocks in athletes, musicians, and professionals.

How Long Does EMDR Take?

The duration of EMDR treatment varies based on the nature and complexity of what you are addressing:

• Single-incident trauma (such as a car accident or assault in adulthood): Often resolves in 3 to 6 sessions.
• Multiple traumas or complex PTSD: May require 12 to 20 sessions or more, particularly when there are extensive childhood experiences to process.
• EMDR intensives: Can accomplish the equivalent of months of weekly sessions in just a few days of concentrated treatment.

Each individual memory target may require one to three sessions to fully process, depending on its complexity and your processing speed. Some people process very quickly, while others need more time — neither is better or worse.

Is EMDR Right for You?

EMDR may be a good fit if you:

• Have experienced trauma or adverse life events that continue to affect you
• Suffer from PTSD symptoms — flashbacks, nightmares, hypervigilance, avoidance
• Find it difficult to talk about traumatic experiences in detail (EMDR requires less verbal narration than many other therapies)
• Want a structured treatment with a clear protocol
• Have tried talk therapy without sufficient improvement in trauma-related symptoms
• Prefer a therapy that does not rely on homework between sessions

EMDR may be less suitable if you are in an active crisis, are currently experiencing psychosis, or have significant dissociative symptoms that have not been stabilized first. A thorough assessment during Phase 1 and Phase 2 will help your therapist determine whether EMDR is appropriate and safe for you.

It is important to seek treatment from a trained and certified EMDR clinician. EMDR certification requires completion of an EMDRIA-approved training program that includes supervised practice. You can verify a therapist's credentials through the EMDR International Association (EMDRIA) directory.

EMDR Intensives

Rather than spreading EMDR across months of weekly 50- to 90-minute appointments, EMDR intensives compress treatment into extended sessions over a shorter timeframe. Intensive formats typically include:

• Half-day intensives: 3 to 4 hours of EMDR processing in a single session, often scheduled over 2 to 3 consecutive days
• Full-day intensives: 5 to 6 hours of processing per day (with breaks), typically spanning 2 to 4 days
• Multi-day retreats: Several consecutive days of intensive treatment, sometimes offered in retreat-style settings

EMDR intensives are best suited for people who want rapid relief and can dedicate concentrated time to treatment, those who travel long distances to see a specialist, individuals whose work schedules make weekly appointments difficult, and anyone who finds it hard to maintain therapeutic momentum with sessions spaced a week apart. Research and clinical experience suggest that intensives can produce results comparable to standard weekly delivery in a fraction of the calendar time.

For a deeper look at the format, scheduling, costs, and what to expect, read our full guide to EMDR intensives.

EMDR by the Numbers

84–90%

Source: Multiple RCTs including Marcus et al. and Wilson et al.

30+

Source: EMDR research database; APA and WHO guideline reviews

150,000+

Source: EMDR International Association (EMDRIA) and EMDR Europe

WHO, APA, VA & ISTSS

Source: World Health Organization, American Psychological Association, U.S. Department of Veterans Affairs, International Society for Traumatic Stress Studies

Frequently Asked Questions

Related Articles

Understanding EMDR

• What Actually Happens During an EMDR Session?
• What EMDR Therapy Is Really Like
• Types of EMDR Therapy
• EMDR Statistics and Success Rates
• EMDR Side Effects: What to Expect
• EMDR Intensives: A Complete Guide
• Questions to Ask an EMDR Therapist
• Therapies Similar to EMDR
• EMDR Therapy in Bethesda
• Can You Do EMDR Therapy Online?

EMDR for Specific Conditions

• EMDR for Anxiety: Can It Help Beyond Trauma?
• How Effective Is EMDR for PTSD? What Research Shows
• EMDR for Depression
• EMDR for OCD
• EMDR for Grief and Loss
• EMDR for Phobias
• EMDR for Performance Anxiety
• EMDR for Chronic Pain

EMDR Compared to Other Therapies

• EMDR vs Talk Therapy: Which Is Better for Trauma?
• EMDR vs CBT
• CBT vs EMDR for Anxiety
• EMDR vs CPT
• CPT vs EMDR for Trauma
• EMDR vs Prolonged Exposure
• EMDR vs Somatic Therapy
• EMDR vs DBT
• EMDR vs Medication
• EMDR vs Brainspotting
• ART vs EMDR
• ART vs EMDR: Cost Comparison
• AEDP vs EMDR
• IFS vs EMDR
• TF-CBT vs EMDR
• TF-CBT vs EMDR for Children