The Flash Technique is a therapeutic intervention used within EMDR (Eye Movement Desensitization and Reprocessing) to reduce the intensity of traumatic memories, often in just minutes, without requiring you to consciously focus on the disturbing event. Developed by psychologist Philip Manfield, it works as a complement to standard EMDR rather than a replacement. The key difference: instead of holding a painful memory in mind while processing it, you focus on something positive while the therapist briefly activates the trauma memory in rapid, almost imperceptible flashes.
How the Flash Technique Works
The core idea behind Flash is that trauma can be processed without fully re-experiencing it. In standard EMDR, you hold a distressing memory in mind while following bilateral stimulation (like eye movements or tapping). That process works, but it can feel intense. Flash takes a different route. You spend most of the session focused on something pleasant, and the traumatic memory is only activated for split seconds at a time.
The theory is that these brief moments of activation are enough to open the memory for reprocessing, while the immediate shift back to positive focus prevents your brain’s threat-detection center from fully firing up. By keeping conscious attention away from the trauma, your prefrontal cortex (the rational, planning part of the brain) stays active instead of being overwhelmed by the emotional alarm system. This creates a window where the memory can be reconsolidated, essentially rewritten, with less emotional charge attached to it.
What a Session Actually Looks Like
A Flash session follows a specific sequence. First, you choose a target memory and rate how distressing it feels on a 0-to-10 scale, where 10 is the worst distress imaginable. Then you pick what’s called a Positive Engaging Focus: a memory, activity, animal, piece of music, or anything that feels genuinely good and absorbing to think about. This isn’t a relaxation exercise. It needs to be something that actively engages your attention.
Once you’re focused on that positive image, the therapist begins bilateral stimulation through handheld pulsers, tapping, or another method. While you stay engaged with the positive focus, the therapist says “Flash,” and you rapidly blink three times. During those blinks, you don’t deliberately think about the target memory. One set consists of three rapid blinks repeated five times. After two or three sets, the therapist checks in and asks what’s different.
The process repeats until your distress rating drops to zero or near zero. For many people, this happens surprisingly fast, sometimes within a single session, though results vary depending on the complexity of the trauma.
How It Compares to Standard EMDR
A controlled study comparing Flash to an abbreviated EMDR protocol found no significant difference in how much each method reduced the emotional intensity and vividness of disturbing memories. Both worked. But participants consistently rated the Flash procedure as more pleasant to undergo. That’s not a minor detail. For people who avoid trauma therapy because they dread reliving painful experiences, a gentler entry point can make the difference between starting treatment and not.
Flash is not a standalone therapy. It’s designed to be used at different stages within the standard EMDR protocol, most commonly during the preparation or desensitization phases. Think of it as a way to take the edge off a highly charged memory so that the rest of EMDR processing can proceed more smoothly. If a memory starts at a 9 or 10 on the distress scale, Flash can bring it down to a more manageable level before deeper processing begins.
Who It’s Used For
Flash was originally developed for PTSD, and that remains its primary application. It’s particularly useful for people whose traumatic memories are so overwhelming that traditional processing feels unbearable, those who shut down, dissociate, or become emotionally flooded when asked to focus on what happened. By minimizing direct contact with the memory, Flash offers a way to begin processing without triggering those protective responses.
Clinicians have also applied it to phobias and other conditions involving intensely disturbing memories. It’s been adapted for use with children, including those with dissociative symptoms, where the positive engaging focus might involve play, animals, or favorite activities rather than adult-oriented imagery.
What the Evidence Says So Far
Flash is still relatively new, and the research base is growing but not yet extensive. The controlled studies that exist show it reduces distress ratings effectively and comparably to EMDR. In one large practicum-based study, clinicians collectively used Flash in 791 sessions with no reported harm to any client. An 18-month follow-up of 75 participants who started with the highest possible distress ratings (9 or 10 out of 10) confirmed the technique’s safety profile.
That said, current research has limitations. Most studies have used self-reported distress as the primary outcome measure, sample sizes have been modest, and some studies lacked control groups. The technique is recognized by the EMDR International Association (EMDRIA), which approves it for continuing education credits, though it’s classified as a “deviation from the EMDRIA Definition of EMDR,” meaning it’s considered a promising alternative procedure rather than part of the standard protocol.
Safety Considerations
Across the studies conducted so far, no adverse outcomes have been reported. Researchers have noted, however, that people who feel psychologically unstable or likely to become emotionally overwhelmed should approach the technique with caution. In research settings, individuals who believed they couldn’t participate without becoming emotionally labile were discouraged from taking part.
In practice, this means Flash is generally considered safe when administered by a trained EMDR therapist who can assess whether a client is stable enough for the intervention. The technique’s design, keeping conscious attention away from the trauma, inherently reduces the risk of retraumatization compared to approaches that require sustained focus on disturbing material. But it’s still a trauma intervention, not a self-help tool, and it requires clinical judgment about timing and readiness.