What Is EMDR?

The Discovery and the Science Behind It

In 1987, psychologist Francine Shapiro made an observation that would become one of the most significant accidental discoveries in clinical psychology. While walking through a park, she noticed that disturbing thoughts she was experiencing seemed to lose their distressing charge when her eyes moved rapidly back and forth as she tracked moving objects. Intrigued, she began systematically studying the effect — and eventually developed it into a structured therapeutic protocol.

The resulting treatment, initially called Desensitization of Traumatic Memories and later renamed EMDR, produced striking results in early studies of trauma survivors — including Vietnam veterans and sexual assault survivors. Subsequent decades of research refined the protocol and produced a substantial evidence base.

Why Trauma Memories Get "Stuck"

To understand why EMDR works, you first need to understand what makes traumatic memories different from ordinary ones. Shapiro's theoretical framework — the Adaptive Information Processing (AIP) model — proposes that the brain has a natural information-processing system that ordinarily integrates experiences, links them to existing knowledge, and stores them as resolved memories that can be accessed without significant distress.

Trauma, however, overwhelms this system. When an event is too intense, too sudden, or too threatening for normal processing to occur, the memory becomes stored in a fragmentary, sensory-dominant form — disconnected from the rest of memory, associated with the original emotional charge and bodily sensations, and isolated from the adaptive information (perspective, resolution, self-knowledge) that would otherwise allow the experience to integrate.

This is why trauma memories feel different from ordinary memories. Recalling a difficult but non-traumatic experience is relatively neutral — you can reflect on it, gain insight, and feel its significance without being overwhelmed. Recalling a traumatic memory can feel as though it's happening in the present — vivid, bodily, emotionally immediate. The nervous system responds as though the threat is current because, at the level of neural encoding, it has never been resolved.

What Bilateral Stimulation Does

EMDR's primary mechanism is bilateral stimulation (BLS) — alternating sensory input to the left and right sides of the body, most commonly through guided eye movements, but also through taps on alternating hands or auditory tones delivered through headphones.

How exactly bilateral stimulation facilitates reprocessing is still debated in the research literature. Several theories have been proposed: that it mimics the eye movements of REM sleep (the stage at which normal memory consolidation and emotional processing occur); that it activates a dual attention that allows simultaneous processing of the traumatic memory and the safe present context; that it places a "taxing" demand on working memory that reduces the vividness and emotional intensity of recalled images. What the research consistently shows — regardless of mechanism — is that bilateral stimulation combined with directed attention to traumatic material consistently produces measurable reprocessing and resolution.

What EMDR Treats

EMDR was developed for and has its strongest evidence base in the treatment of PTSD and trauma-related disorders. But its applications have expanded considerably since Shapiro's original work.

Core Applications

• PTSD and acute trauma: Single-incident traumas (accidents, assaults, medical trauma) and complex, relational traumas (childhood abuse, neglect, ongoing domestic violence).
• Anxiety disorders: Phobias, panic disorder, social anxiety — particularly where the anxiety has a traumatic origin or is maintained by specific distressing memories.
• Depression: Particularly depression rooted in adverse early experiences or maintained by negative self-beliefs tied to past events.
• Grief and complicated bereavement: Where loss memories have become traumatic in character — intrusive, non-integrating, associated with intense somatic distress.
• Dissociative conditions: With appropriate preparation and a phased approach, EMDR is used with dissociative presentations under specialized guidance.

EMDR for Performance and Sport Psychology

One of the more exciting developments in EMDR is its application to performance issues — a natural fit given that many performance blocks have their roots in adverse experiences (a devastating failure, an injury, a humiliating competition, a critical coach or parent) that were never fully processed.

The EMDR Performance Enhancement Protocol was developed specifically for athletes, performers, executives, and others experiencing performance-related distress or blocks. It targets memories associated with performance failures, limiting beliefs ("I'm not good enough," "I choke under pressure"), and the anticipatory anxiety of high-stakes competition. It also includes an installation component that uses BLS to strengthen positive performance states, mental imagery, and the felt sense of peak performance.

At The Mental Game Clinic, EMDR for performance is a natural integration point between our clinical and coaching work — allowing us to address the psychological roots of performance blocks at a depth that traditional coaching cannot reach.