EMDR Simply Explained

1. What It Is About

EMDR is the abbreviation for Eye Movement Desensitization and Reprocessing. It is a psychotherapy method developed in the 1980s and is primarily used for post-traumatic stress disorder (PTSD). In PTSD, distressing memories resurface repeatedly after a traumatic experience.

In EMDR, the patient recalls such a memory—including the associated images, thoughts, feelings, and bodily sensations. At the same time, the patient follows the therapist’s hand movements with their eyes. Instead of eye movements, sounds or touches can also be used; experts refer to this as bilateral stimulation. These phases last from seconds to minutes. Scales are used to record how distressing the memory still feels.

The procedure consists of eight phases: history-taking, preparation, assessment, desensitization, installation, body scan, closure, and reevaluation. The goal is for the distressing memory to lose its intense impact.

2. What Studies Show

EMDR is best studied in PTSD. In a study with 155 adult patients who had PTSD alongside a psychotic disorder, EMDR was compared with another trauma therapy and a waitlist. All participants received eight 90-minute sessions. PTSD symptoms decreased significantly after treatment and remained so six months later, similarly to the comparison therapy. The treatment had no measurable effect on hallucinations or social functioning 1.

A review summarised eleven studies involving 424 adults and directly compared EMDR with trauma-focused cognitive behavioural therapy. EMDR performed slightly better overall, particularly in reducing intrusive memories and tension. This small advantage was no longer detectable three months later 3.

In a refugee camp in Turkey, 85 Syrian refugees with PTSD were studied. One group received EMDR, while the other was placed on a waitlist. After treatment, PTSD symptoms and depressive symptoms were significantly lower in the EMDR group; these improvements persisted five weeks later 2.

There are also studies in children and adolescents. In a trial with 103 children and adolescents aged 8 to 18 years after a single traumatic event, EMDR was compared with a writing therapy and a waitlist, with up to six 45-minute sessions. After EMDR, PTSD symptoms decreased markedly, and 92.5% of children no longer met the criteria for PTSD; after writing therapy, this was 90.2%. Improvements were maintained at three and twelve months 4.

An observational study followed 347 patients with severe PTSD in an eight-day programme with two sessions daily. After treatment, 82.9% showed a significant response, and PTSD diagnoses were no longer present in 54.9%. There was no control group in this study 6.

For anxiety disorders without PTSD, a review summarised 17 studies involving 647 participants. Anxiety, panic, and phobias decreased, particularly compared to groups receiving no treatment. Data on long-term outcomes are still pending 5.

3. What Remains Unclear

How EMDR works exactly is an open question. One hypothesis is that eye movements engage the working memory—the part of cognition that briefly holds information. This could reduce the vividness and emotional intensity of a distressing memory. Whether eye movements themselves make the difference or whether other tasks have the same effect remains to be clarified.

It is also unclear whether the treatment’s effects persist over time; longer follow-up periods are rare. For symptoms outside PTSD—such as chronic pain, depression, or exhaustion—the results are mixed, and a clear advantage over other methods is often not evident. There is limited research for specific groups, such as older adults or people with complex PTSD. EMDR is frequently combined with other therapies, which complicates attributing the effects to EMDR alone.

4. What This Means in Everyday Practice

For PTSD, EMDR is among the methods included in guidelines, and the research base is extensive. Those seeking information on treatment options will find a comparatively well-researched method whose outcomes are similar to other trauma-focused approaches.

For symptoms outside PTSD, the situation is different: here, there are indications but no definitive assessment. If EMDR is considered for anxiety, pain, or exhaustion, the research base is still evolving.

Next, it would need to be clarified whether bilateral stimulation itself is effective or whether other components of the treatment drive the change, and whether improvements are maintained over longer periods.

All details with study numbers and sources: Detailed page on EMDR (Eye Movement Desensitization and Reprocessing). For children: EMDR (Eye Movement Desensitization and Reprocessing) for children.