The Light Stream Technique: A Step-by-Step Guide

The light stream technique is an EMDR exercise: you notice a physical sensation tied to stress, describe its shape, color, and temperature, then imagine a stream of calming light flowing into it until the sensation shifts. Psychologist Francine Shapiro included it in EMDR’s preparation phase, and it takes just a few minutes, no equipment required.

Your shoulders won’t drop, even after the meeting ends. Or there’s a tight band across your chest that a few slow breaths didn’t touch. The light stream technique gives that kind of tension somewhere to go, using imagery instead of willpower.

What is the light stream technique, and where does it come from?

The light stream technique is a body-focused visualization exercise. You find a physical sensation, usually tension or discomfort connected to stress, and picture a stream of light moving into it until the sensation changes.

It comes from Francine Shapiro’s own EMDR textbook, Eye Movement Desensitization and Reprocessing (EMDR) Therapy: Basic Principles, Protocols, and Procedures, where it sits among a handful of tools EMDR therapists teach during Phase 2, the preparation stage. Per EMDRIA, the EMDR International Association, Phase 2 is where clients build coping skills before any memory work begins. Some therapists also bring it back at closure, the end of a session, to help a client leave steadier than they arrived.

It belongs to the same family as the safe place exercise and the container exercise: a resourcing technique, built to strengthen calm rather than to process a memory.

What do you need before you start?

Nothing but a quiet minute or two. No equipment, no app, and no memory work involved.

You can use it two ways. The first is general: you check in with your body and work with whatever tension is already there. The second is more targeted: you hold a mild stressor loosely in mind, like a hard conversation or a looming deadline, notice what it does to your body, and work with that sensation directly.

You don’t need any prior EMDR knowledge to try it. This is a calming exercise, not a memory-reprocessing one, so there’s no target memory to choose and no distress rating required first.

How do you do the light stream technique, step by step?

Do it seated or lying down, eyes open or closed, whichever helps you focus.

1. Settle in. Sit or lie down somewhere quiet, and take one slow breath.
2. Notice a sensation. Scan your body, or bring a mild stressor to mind, and find where it shows up physically: a tight chest, a clenched jaw, a knot in your stomach.
3. Describe it in detail. Give the sensation a size, shape, and color. Does it have a temperature? A texture? Even a sound, if that fits. Whatever comes to mind first is fine.
4. Choose a color that feels calming. It doesn’t need to mean anything in particular. Whatever shade feels soothing or restorative to you is the right one.
5. Imagine that color as a stream of light entering your body. Let it come in through the top of your head, or wherever feels natural, and picture it flowing directly toward the sensation you found.
6. Watch what happens as the light reaches it. Notice any change in the sensation’s size, shape, color, or temperature. It might shrink, soften, or shift entirely. If nothing changes yet, stay with it a little longer.
7. Let the light keep moving. Once the original spot has settled, let the light spread further, filling your chest, your arms, your whole body, head to toe.
8. Take a breath and come back. Notice how your body feels now, then let your attention return to the room around you.

That’s the whole exercise. Most people move through it in a few minutes, a bit longer the first few times, quicker once the steps feel familiar.

What’s actually happening when you do this?

No study has tested the light stream technique on its own, so it’s worth being upfront about what the evidence does and doesn’t say.

EMDRIA’s own guidance on EMDR and chronic pain describes exercises like this one as a way to build felt-sense safety, widen a person’s window of tolerance, and build confidence for soothing pain and distress between sessions. That’s a description of intended purpose, not a controlled trial.

The closest direct evidence comes from guided imagery research outside EMDR. A 2020 meta-analysis in Complementary Therapies in Clinical Practice pooled trials that used directed imagery before surgery. Across those trials, it eased both anxiety beforehand and pain afterward. That’s a different setting than a stressful afternoon at your desk, but it’s the same basic move: aiming focused attention and imagery at one bodily sensation until it shifts. Unlike bilateral stimulation’s side-to-side rhythm, light stream leans on a simpler mechanism: directing sustained attention at a body sensation, the kind of inward noticing researchers call interoception.

There’s also earlier, narrower support for EMDR’s resourcing techniques generally. A 2002 paper in the Journal of Clinical Psychology, by Korn and Leeds, described early, case-study evidence for resource-building work like this. It found the approach helped stabilize people before deeper trauma processing began. It’s a small, early body of evidence, not proof that any single resourcing exercise works for everyone.

Is this the same as bilateral stimulation or EMDR therapy?

No. Bilateral stimulation alternates left and right, through eye movements, tapping, or alternating tones. The light stream technique doesn’t alternate anything; it’s one steady visualization instead.

Both are pieces of the same larger EMDR toolkit, just built for different jobs. Bilateral stimulation is the mechanism used to reprocess a memory. Light stream, the safe place, and the container exercise are stabilization tools, meant to build and strengthen calm before or after that work, not to replace it.

Full EMDR therapy is a structured, eight-phase process led by a trained clinician, built around reprocessing a specific memory from start to finish. A few minutes of visualization doesn’t attempt that, and it isn’t meant to.

When is the light stream technique actually useful?

It fits ordinary, physical stress: a tight chest after a hard conversation, a clenched jaw at the end of a long day, or the emotional layer that often sits underneath ongoing physical pain. It’s a tool for the body’s side of stress, not just the thoughts running through your head.

Some people use it lying in bed when a tense body is what’s keeping them awake, or at a desk between meetings when there’s no time for a longer reset.

It also works well as a bookend to other practice. You might use it before a self-guided bilateral-stimulation session with EmEase, a self-guided EMDR app, to settle your body first, or afterward to help you close out and reground, at app.emease.com.

What if it doesn’t seem to work, or something bigger comes up?

Not every color or image lands the first time. If nothing feels calming, try a different one; there’s no correct choice, only the one that works for you.

Pay attention to the direction things move. A sensation that eases, even slightly, is doing what it’s supposed to. One that gets stronger or sharper the more you focus on it is a different signal: stop, ground yourself instead (name a few things you can see, feel your feet on the floor), and consider that useful information rather than a failure.

This is a stabilization tool, not a fix for whatever sits underneath a stubborn sensation. If tension in the same spot keeps returning no matter how often you work with it, that pattern is worth bringing to a professional rather than something to keep managing alone.

There’s no limit on how often you can use it. Some people return to the same sensation several times in a day; others reach for it only when something specific is bothering them.