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EMDR for PTSD: How It Works and What to Expect

Empathy Health Clinic June 19, 2025

What Is EMDR Therapy?

Eye Movement Desensitization and Reprocessing (EMDR) is an evidence-based psychotherapy originally developed by Francine Shapiro in 1987 to treat post-traumatic stress disorder. Unlike traditional talk therapy, EMDR does not require patients to describe traumatic events in extensive detail or complete homework assignments between sessions. Instead, it uses bilateral stimulation — typically guided eye movements — to help the brain reprocess traumatic memories so they no longer trigger intense emotional and physiological responses.

If you are considering EMDR therapy for PTSD, understanding how the process works can help you feel more prepared and confident about beginning treatment. Our PTSD treatment team in Orlando includes clinicians trained in EMDR who can determine whether this approach is right for your specific situation.

How EMDR Targets PTSD: The Adaptive Information Processing Model

EMDR is built on the Adaptive Information Processing (AIP) model, which proposes that the brain has a natural capacity to process and integrate experiences — including distressing ones. When a traumatic event overwhelms this processing system, the memory gets stored in its raw, unprocessed form, complete with the original images, sounds, emotions, and physical sensations.

This is why PTSD symptoms feel so present-tense: the brain has not filed the memory away as "past." Instead, triggers activate the unprocessed memory network, producing flashbacks, nightmares, and intense emotional reactions as if the trauma is happening right now.

EMDR facilitates the brain's natural processing mechanism by activating the traumatic memory while simultaneously engaging in bilateral stimulation. This dual-attention process appears to help the brain move the memory from its "stuck" state into adaptive, long-term storage where it can be recalled without the accompanying emotional charge.

The 8 Phases of EMDR Treatment

EMDR follows a structured eight-phase protocol. Understanding these phases helps demystify the process:

Phase 1: History and Treatment Planning

Your therapist gathers a comprehensive history, identifies target memories for processing, and develops a treatment plan. This phase typically takes one to two sessions.

Phase 2: Preparation

You learn about the EMDR process and practice self-regulation techniques such as the "safe place" visualization. Your therapist ensures you have adequate coping skills before trauma processing begins. This phase builds the therapeutic alliance and ensures readiness.

Phase 3: Assessment

The therapist activates the target memory by asking you to identify the image, negative belief, emotions, and body sensations associated with it. Baseline measurements are taken using standardized scales.

Phase 4: Desensitization

This is the core processing phase. While holding the target memory in mind, you follow the therapist's hand movements (or other bilateral stimulation such as taps or tones). Sets of eye movements continue until the distress associated with the memory drops to zero or near-zero. This phase often produces the most noticeable shifts.

Phase 5: Installation

A positive belief is strengthened and "installed" to replace the negative cognition associated with the trauma. For example, "I am powerless" might be replaced with "I survived and I am strong."

Phase 6: Body Scan

You scan your body for any residual tension or discomfort related to the target memory. Any remaining physical disturbance is processed with additional bilateral stimulation.

Phase 7: Closure

Each session ends with stabilization techniques to ensure you leave in a state of equilibrium, even if processing is incomplete. Your therapist may provide guidance for managing any material that surfaces between sessions.

Phase 8: Reevaluation

At the beginning of the next session, your therapist checks whether treatment effects have been maintained and determines whether additional processing is needed on the same target or whether it is time to move to the next one.

What a Typical EMDR Session Looks Like

A standard EMDR session lasts 60 to 90 minutes. During the desensitization phase, you sit in a comfortable position while your therapist moves their fingers back and forth approximately 12 to 18 inches from your face. You follow the movement with your eyes while simultaneously holding the traumatic memory in awareness.

Between sets of eye movements, your therapist will ask you to take a breath and report whatever comes to mind — a new image, thought, emotion, or physical sensation. There is no right or wrong response. The therapist follows your brain's natural processing rather than directing the content.

Many patients report that traumatic memories that once felt overwhelming begin to feel more distant, like watching an old movie rather than reliving the event. Physical symptoms such as racing heart, chest tightness, or nausea often diminish as processing progresses.

EMDR vs. Traditional Talk Therapy for PTSD

EMDR and traditional talk therapy approaches like trauma-focused CBT are both effective treatments for PTSD. They are not competing approaches — they are different tools that work through different mechanisms:

  • Talk therapy (such as CPT or Prolonged Exposure) works primarily through cognitive and behavioral channels, helping patients challenge distorted beliefs and gradually confront avoided situations
  • EMDR works primarily through memory reconsolidation, using bilateral stimulation to facilitate the brain's natural processing capacity

Some patients prefer EMDR because it requires less verbal recounting of traumatic details. Others prefer the structured cognitive work of CPT. The best approach is the one that fits your needs, and your clinician will help guide that decision.

Research Evidence

EMDR has one of the strongest evidence bases of any PTSD treatment. It is recommended by the World Health Organization (WHO), the American Psychological Association (APA), the Department of Veterans Affairs (VA), and the Department of Defense (DoD). A meta-analysis published in the Journal of EMDR Practice and Research found that 77% of combat veterans were free of PTSD after 12 sessions of EMDR.

EMDR is also effective for anxiety-related conditions, phobias, and grief, though its primary evidence base remains in trauma treatment.

Who Is a Good Candidate for EMDR?

EMDR is appropriate for most adults with PTSD, including those with single-incident trauma and those with multiple traumatic experiences. It may be particularly well-suited for individuals who:

  • Find it difficult to talk about their trauma in detail
  • Have not responded adequately to previous talk therapy
  • Experience strong physical symptoms (body memories, somatic complaints)
  • Want a structured, time-limited treatment approach

EMDR may need to be modified or preceded by stabilization work for individuals with active substance use disorders, dissociative disorders, or acute suicidality. Your PTSD treatment provider in Orlando will conduct a thorough evaluation to determine readiness.

Frequently Asked Questions

How many EMDR sessions are needed for PTSD?

Research suggests that single-incident trauma often resolves in 6 to 12 EMDR sessions. Complex or multiple traumas may require 12 to 24 sessions or more. Your therapist will reassess progress regularly and adjust the treatment plan accordingly.

Is EMDR painful or distressing?

While processing traumatic memories can temporarily increase emotional intensity during sessions, the distress typically decreases rapidly within each session and between sessions. Most patients report that the short-term discomfort is far less than the ongoing suffering of untreated PTSD.

Can EMDR be combined with medication?

Yes. Many patients benefit from a combination of EMDR therapy and psychiatric medication management. Medications can help stabilize mood and reduce symptom severity while EMDR addresses the underlying traumatic memories.

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