What Is EMDR Therapy? A Guide by an EMDRIA Certified Consultant

When Prince Harry allowed cameras to record his Eye Movement Desensitization and Reprocessing (EMDR) session, the therapy reached an international audience overnight. The interest is well deserved: EMDR is recognized by the World Health Organization as a first-choice treatment for Post-Traumatic Stress Disorder, and the International Society for Traumatic Stress Studies strongly recommends EMDR for children, adolescents, and adults.

As an EMDRIA Certified Therapist and Consultant and a published researcher in the Journal of EMDR Practice and Research, the peer-reviewed journal of the EMDR International Association, I have spent years using EMDR with clients, training and supervising other therapists in it, and contributing to the scientific theory of how it works. This guide is my attempt to explain, clearly and honestly, what EMDR is, how it works, and whether it might be right for you.

What Does EMDR Stand For?

EMDR stands for Eye Movement Desensitization and Reprocessing. It owes its beginnings to a walk in a California park in 1987, when psychologist Dr. Francine Shapiro noticed her eyes rapidly moving back and forth while thinking of a distressing memory, and immediately noticed the emotional intensity of that memory decline. She began studying the connection between eye movements and memory, first calling her method EMD for its desensitizing effect. It was renamed EMDR in 1991 when the reprocessing effect became clear: where negative thoughts once accompanied a traumatic memory, new statements like "I'm safe now" or "I can protect myself" can be installed, along with new feelings of mastery, safety, and resolve. What followed was decades of rigorous research that transformed a walk in the park into one of the most effective trauma treatments available today.

How Does EMDR Therapy Work?

To understand EMDR, it helps to understand how trauma gets stuck in the brain. When we experience something overwhelming (an accident, abuse, a sudden loss), the brain's natural processing system can become disrupted. The memory gets stored in a raw, unprocessed state, still carrying the original emotions, physical sensations, and beliefs from the moment it happened.

This is why trauma survivors don't just remember what happened, but relive it; the memory hasn't been properly filed away. It remains activated, triggering the same fear, shame, or helplessness as if it were happening right now.

At its core, EMDR is an interrupted exposure therapy: it alternates bilateral (side to side) stimulation, often in the form of eye movements, with brief cognitive debriefing. EMDR taxes the brain's working memory, which is how much you can hold actively in mind, by adding a distracting task such as eye movements or tapping alongside the active recall of a traumatic memory or feared future event. The distraction pulls just enough attention away from the traumatic memory that the image and emotions decrease in intensity, the same way opening too many tabs on your computer overloads its RAM and slows video playback.

EMDR is based on Dr. Shapiro's Adaptive Information Processing (AIP) model: the brain has an innate system that consolidates new experiences into existing memory networks. Traumatic events overwhelm that system, so the memory gets encoded in state-dependent form with the vivid emotions and sensations still attached. EMDR reactivates adaptive processing using bilateral stimulation, typically guided eye movements, alternating taps, or audio tones, so the reliving symptoms of trauma, like intrusive images, physical tension, and a racing heart, are uncoupled from the memory itself. The event can finally be stored in the appropriate past tense: something that happened, but no longer controls you.

The 8 Phases of EMDR Treatment

EMDR is a structured, phased protocol. Every certified therapist follows the same eight phases:

What Can EMDR Treat?

EMDR was originally developed for PTSD, but research has expanded its application significantly. At Authentic Answers, I use EMDR to treat:

Post-Traumatic Stress Disorder (PTSD), including single-incident trauma from accidents, assaults, or medical events.

Complex PTSD (CPTSD), resulting from prolonged or repeated trauma such as childhood abuse, neglect, or domestic violence. CPTSD requires a more layered, careful approach that an experienced consultant is uniquely equipped to provide.

Childhood trauma: early experiences that shaped core beliefs about safety, worth, and relationships.

Anxiety and panic: when rooted in past experiences rather than present circumstances.

Grief and traumatic loss: particularly sudden or violent loss that becomes stuck.

Relationship trauma: betrayal, emotional abuse, or patterns rooted in early attachment wounds.

How Is EMDR Different from Talk Therapy?

Traditional talk therapy asks you to discuss and analyze your experiences. This can be enormously helpful, but it has a ceiling of effectiveness for treating trauma. Talking about trauma engages the prefrontal cortex, the thinking brain. But trauma lives in the limbic system, the emotional brain. You can understand your trauma intellectually and still feel completely hijacked by it.

EMDR bypasses the talking and goes directly to where trauma is stored. Many clients describe it as gaining access to parts of their experience that years of talk therapy never touched. The changes are often faster, deeper, and more durable.

How Many EMDR Sessions Will I Need?

For a single-incident trauma (a car accident, a surgical procedure, one assault), research shows most clients experience significant relief within 8 to 12 sessions. For Complex PTSD or layered childhood trauma, treatment is typically longer; the number of sessions varies from person to person and is something we discuss together.

During your free initial consultation, I will give you an honest assessment of what treatment might look like for your specific history.