EMDR Therapy

EMDR stands for Eye Movement Desensitization and Reprocessing. It's a structured form of psychotherapy, originally developed in the late 1980s by psychologist Francine Shapiro, primarily to treat trauma and PTSD. It's since been used more broadly for other conditions, though the strongest evidence remains for trauma-related symptoms.

The basic idea

The theory behind EMDR is that when something traumatic or deeply distressing happens, the brain sometimes fails to process the memory normally. Instead of being filed away as something that happened in the past, the memory stays "stuck" in a more raw, unprocessed form — which is part of why it can keep triggering strong emotional and physical reactions long after the event, as if it's still happening.

EMDR aims to help the brain finish processing that memory, so it gets integrated into long-term memory in a way that's less emotionally charged and intrusive.

What the work actually looks like

A course of EMDR moves through eight phases, though the heart of the work is in the middle:

1. History-taking and treatment planning — the therapist learns about your history and identifies target memories to work on.
2. Preparation — explaining the process, building trust, sometimes teaching calming techniques.
3. Assessment — identifying a specific memory, along with the image, negative belief ("I'm not safe," "I'm powerless"), emotions, and body sensations tied to it.
4. Desensitization — this is the core step. You briefly hold the memory in mind while simultaneously following some kind of side-to-side stimulation — usually the therapist's finger moving back and forth, but tapping or audio tones are also used. This is done in short sets, pausing periodically to check in.
5. Installation — strengthening a more adaptive, positive belief in place of the negative one.
6. Body scan — checking for any lingering physical tension connected to the memory.
7. Closure — returning to a calm state at the end of each session.
8. Reevaluation — checking in at the start of future sessions on progress.

What it's used for, and how well it works

Trauma and PTSD

This is where EMDR has the most robust evidence. The World Health Organization recommends EMDR and trauma-focused CBT as the only two psychotherapies for PTSD in children, adolescents, and adults, with effectiveness in many studies comparable between them. The American Psychological Association also includes EMDR in its PTSD guideline, though as a conditional rather than a strong recommendation.

Anxiety

There's a reasonable, growing body of evidence that EMDR can help with anxiety disorders, particularly when the anxiety is linked to specific distressing memories — like a phobia rooted in a past incident. Evidence here is less extensive than for PTSD, but it is supportive.

Depression

Evidence here is more limited and mixed compared to PTSD, and EMDR isn't generally considered a first-line treatment for depression on its own, especially when the depression isn't clearly trauma-linked.

Where EMDR does show promise for depression is in cases where the low mood is tied to specific unresolved memories — early experiences of failure, rejection, neglect, or loss that fed into broader negative self-beliefs like "I'm a failure," "I'm worthless," or "I don't matter." Depression often involves these kinds of global negative beliefs getting reinforced repeatedly through memory and rumination, which can keep the depressive thinking pattern self-sustaining. The installation phase is where EMDR tries to interrupt that cycle directly.

A closer look at installation

Installation is the fifth phase, and it's worth understanding in a little more detail — it's the step that does the most work for depression and anxiety specifically.

What's happening before installation

By the time you reach the installation phase, you've already gone through desensitization — repeated sets of bilateral stimulation while holding the target memory in mind, until the distress connected to that memory has dropped significantly. During the assessment phase earlier on, you identified a negative cognition tied to the memory (something like "I'm powerless," "I'm not safe," "I'm not lovable," "It was my fault") and also chose a positive cognition you'd rather believe instead ("I did the best I could," "I'm safe now," "I'm worthy of love," "I survived").

The key thing to understand is that early in treatment, that positive belief usually feels true intellectually but is not felt as true. Someone might say "I know it wasn't my fault" while still feeling, in their gut, that it was.

What installation actually does

Once the targeted memory has lost most of its emotional charge, the therapist has you hold the memory together with the positive belief in mind, and runs further sets of bilateral stimulation — but now the focus shifts from processing distress to strengthening the connection between the memory and the adaptive belief.

A few things seem to happen here:

• Linking the memory network to the belief network. The idea is that the traumatic memory is stored in an associative network, alongside the negative belief, the bodily sensations, and the emotions from the time. Installation tries to link that same memory network to a different, healthier belief — so that recalling the memory in the future activates "I survived and I'm safe" instead of "I'm in danger."
• Generalization. Because memories are networked together, strengthening a positive belief attached to one memory often makes it more available and more believable across other related memories too. Someone processing one incident of childhood neglect may find that the belief "I matter" starts to feel more solid even regarding unrelated memories.
• Increasing the VoC rating. The therapist keeps checking in, asking you to rate how true the positive belief feels right now, and continues sets of stimulation as long as the rating keeps climbing. The phase isn't considered complete until the belief feels as true as it reasonably can — ideally 6 or 7 out of 7 — or until it plateaus.

Why this step matters for depression and anxiety, not just trauma

Depression often involves persistent, global negative self-beliefs ("I'm a failure," "I'm fundamentally flawed") that get reinforced over and over by memory and rumination. If those beliefs are traceable to specific formative experiences, installation gives a structured way to directly target and weaken them — not just managing mood day-to-day, but trying to shift the underlying belief that's feeding the mood.

Anxiety frequently involves beliefs like "I'm not in control" or "I'm always in danger" that generalize from one bad experience to many situations. Strengthening an opposite belief ("I can handle this," "I'm safe now") tied to the original memory can reduce how readily the anxious belief gets triggered in new situations.

References

• American Psychological Association. (2017). Clinical practice guideline for the treatment of posttraumatic stress disorder (PTSD) in adults. Read it here
• Shapiro, F. (1989). Efficacy of the eye movement desensitization procedure in the treatment of traumatic memories. Journal of Traumatic Stress, 2(2), 199–223.
• Shapiro, F. (2018). Eye movement desensitization and reprocessing (EMDR) therapy: Basic principles, protocols, and procedures (3rd ed.). Guilford Press.
• World Health Organization. (2013). Guidelines for the management of conditions specifically related to stress. Read it here
• Yan, S., et al. (2024). The efficacy of eye movement desensitization and reprocessing treatment for depression: A meta-analysis and meta-regression of randomized controlled trials. Journal of Clinical Medicine, 13(18), 5633. Read it here
• Yunitri, N., Kao, C.-C., Chu, H., et al. (2020). The effectiveness of eye movement desensitization and reprocessing toward anxiety disorder: A meta-analysis of randomized controlled trials. Journal of Psychiatric Research, 123, 102–113.