EMDR fundamentals: what it is, how it works and the 8 phases
EMDR is a structured psychotherapy, not an isolated eye-movement technique. This page brings together the essential concepts needed to understand the model, the full protocol, target-memory selection and the scientific explanations that remain open.
Understanding EMDR requires separating four elements: the complete therapy, its eight phases, dual attention with bilateral stimulation, and theories about mechanism. Clinical evidence for certain problems does not by itself establish one definitive neurological explanation.
EMDR is a complete treatment
The name stands for Eye Movement Desensitization and Reprocessing, but treatment includes history taking, planning, preparation, assessment, processing, installation, body scan, closure and reevaluation. Not every appointment includes eye movements or direct work with difficult memories.
Bilateral stimulation may involve eye movements, alternating sounds or tapping. It is used while a person briefly attends to parts of an experience and notices what emerges, within an agreed plan and with the ability to stop.
Protocol, model and mechanism are different questions
The eight phases describe how the intervention is organised. The Adaptive Information Processing model offers a clinical account of why some experiences remain easily triggered. Working-memory hypotheses examine what the dual task may contribute.
These accounts should not be presented as a settled explanation of the brain. Several processes may contribute to change. Responsible information separates observed outcomes, clinical models and experimental hypotheses.
How to use this collection
Begin with the general introduction and then review the eight phases. To go deeper, explore bilateral stimulation, target memories and the AIP model. The guide to what happens in a session connects these elements to practice.
Understanding the method cannot determine whether it is suitable for you. That decision requires assessment of goals, diagnosis or formulation, stability, risk, dissociation, support, alternatives and preferences with an eligible professional.
Guides in this collection
Each guide answers a specific intent, links its sources and states where the evidence ends.
- 01ESSENTIAL GUIDEWhat is EMDR therapy? Meaning, phases and evidence→
What EMDR stands for, how therapy is structured, where evidence is strongest and what to check before starting.
- 02THE EMDR PROCESSHow does EMDR work and what happens in a session?→
A clear guide to the EMDR protocol, bilateral stimulation and what may happen before, during and after a session.
- 03HISTORY AND DEVELOPMENTHistory of EMDR: Francine Shapiro, origins and evolution→
How EMDR began with Francine Shapiro, what was published in 1989 and how EMD developed into a structured eight-phase psychotherapy.
- 04BOOKS, GUIDES AND SELF-HELPEMDR books: how to choose a guide or workbook→
How to choose EMDR books for clients or professionals, distinguish education from clinical manuals and avoid treating a workbook as self-guided therapy.
- 05STEP-BY-STEP PROTOCOLThe 8 phases of EMDR: what happens at each stage→
A step-by-step guide to the eight EMDR phases, from history and preparation through closure and reevaluation.
- 06PROTOCOL AND PLANNINGEMDR protocol: phases, treatment plans and scripts→
What the standard EMDR protocol includes, how it becomes an individual plan and why a script or PDF cannot replace clinical training.
- 07EMDR PROTOCOL INDEXEMDR protocols: R-TEP, G-TEP, CIPOS, DeTUR and more→
A clear guide to EMDR protocols and adaptations: standard, R-TEP, G-TEP, IGTP, CIPOS, DeTUR, Blind to Therapist, Loving Eyes and their limits.
- 08EYE MOVEMENTS, TONES AND TAPPINGBilateral stimulation in EMDR: what it is and what we know→
How EMDR eye movements, tones and tapping are used, and what research does and does not establish about the mechanism.
- 09TERMS AND PROTOCOLEMD vs EMDR: key differences explained→
What EMD and EMDR mean, how the method evolved and why an isolated technique is not the same as the complete eight-phase psychotherapy.
- 10TREATMENT PLANNINGEMDR target memory: what it is and how it is chosen→
How an EMDR target memory is identified, which elements are assessed and why therapy cannot verify whether a memory is historically accurate.
- 11THEORY AND MECHANISMThe EMDR AIP model: what it explains and what it does not→
What the Adaptive Information Processing model is, how it guides EMDR and why a clinical theory is not a proven literal account of the brain.
- 12PROFESSIONAL PRACTICEEMDR case formulation: template, planning and limits→
How to organize an EMDR formulation using the AIP model, eight phases and three-prong approach without turning a template into automated diagnosis or treatment.
- 13BRAIN, MEMORY AND MECHANISMSEMDR, neuroplasticity and memory reconsolidation→
What neuroplasticity and reconsolidation mean in EMDR, which mechanisms have support and which claims about the brain go beyond the evidence.
- 14NEUROSCIENCE WITHOUT MYTHSEMDR, the nervous system and vagus nerve: the evidence→
What can be said about EMDR, autonomic regulation and the vagus nerve, why “resetting the nervous system” is a metaphor and what remains unknown.
- 15BILATERAL STIMULATION AND REGULATIONThe EMDR Butterfly Hug: uses and limitations→
What the Butterfly Hug is, how it relates to bilateral stimulation and why it is not the same as doing EMDR therapy by yourself.
- 16PREPARATION PHASESafe or calm place in EMDR: purpose and limits→
Why a safe or calm place may be used in EMDR, why it does not work equally for everyone and how it can be adapted without forced imagery.
- 17PREPARATION AND CLOSUREThe EMDR container exercise: purpose and limits→
What the EMDR container exercise is for, when it may be used in preparation or closure and why it is not indefinite emotional suppression.
- 18TARGET ASSESSMENTSUD, VOC and cognitions in EMDR: a clear guide→
What SUD, VOC, negative and positive cognitions mean in EMDR, how they are used across phases and what these ratings cannot measure.
- 19BLOCKED PROCESSINGCognitive interweaves in EMDR: purpose and limits→
What a cognitive interweave is in EMDR, why a therapist may introduce one when processing is blocked and which limits should remain clear.
- 20PAST, PRESENT AND FUTUREThe EMDR future template: purpose and process→
What the EMDR future template is, where it fits in past-present-future planning and why it is more than positive visualisation.
- 21TREATMENT PLANNINGPast, present and future in the EMDR protocol→
How EMDR organises past memories, present triggers and future situations, and why the three-pronged protocol is not a rigid recipe.
- 22ASSESSMENT BEFORE EMDREMDR test or questionnaire: what can it assess?→
Why no quiz can decide whether you need EMDR, what CAPS-5 and PCL-5 measure and how suitability, risks and treatment goals are assessed.
Our editorial starting point
Individual guides add sources specific to each question. This selection shows bodies and publications used across the collection.
- World Health Organization · PTSD interventions for adults↗
- NICE NG116 · Post-traumatic stress disorder recommendations↗
- American Psychological Association · EMDR therapy↗
- American Psychological Association · What is EMDR therapy?↗
- PubMed · Shapiro’s 1989 publication↗
- EMDRIA · EMDR beginnings and Francine Shapiro↗
- EMDR Europe · European association history↗
- EMDRIA · EMDR resource library↗
Questions to orient your next step
Is EMDR simply moving your eyes?
No. Eye movements are one possible form of bilateral stimulation within an eight-phase psychotherapy protocol that includes assessment, preparation, closure and reevaluation.
Is there a definitive explanation of how EMDR works?
There is no single mechanism that has been definitively established. Working memory, dual attention, learning, brief exposure and shared therapy factors are among the processes being studied.
Does every EMDR session process memories?
No. Sessions may focus on history, assessment, preparation, resources, planning, closure or review. Pacing depends on the situation and agreed treatment plan.