EMDR therapy glossary
Clear, careful definitions of the terms used in EMDR sessions, training and searches. Every concept links to a guide for deeper context.
- 01
EMDR
Eye Movement Desensitization and Reprocessing A structured psychotherapy originally developed for traumatic experiences. It combines assessment, preparation, target-memory work, bilateral stimulation, closure and reevaluation; it is not merely eye movement.
Read the related guide: What is EMDR therapy? Meaning, phases and evidence →- 02
AIP
Adaptive Information Processing model EMDR’s theoretical model proposing that some experiences are stored in ways that continue to trigger present distress. It is a clinical formulation, not a literal image or a definitively proven neurobiological account.
Read the related guide: How does EMDR work and what happens in a session? →- 03
Bilateral stimulation
BLS Alternating stimulation, usually through eye movements, tones or taps. It is one component within the EMDR protocol and is not a complete therapy by itself.
Read the related guide: Bilateral stimulation in EMDR: what it is and what we know →- 04
Eye movements
A visual form of bilateral stimulation in which gaze follows an alternating stimulus during brief sets. Other methods may be used when preferred or more appropriate.
Read the related guide: Bilateral stimulation in EMDR: what it is and what we know →- 05
Tapping
Alternating taps Alternating taps used as one possible form of bilateral stimulation. Tapping alone lacks assessment, planning, guided processing and closure, so it is not complete EMDR.
Read the related guide: Can you do EMDR alone at home or with an app? →- 06
Dual attention
Simultaneous attention to a memory or internal material and a present stimulus. It helps maintain contact with the here and now during processing sets.
Read the related guide: How does EMDR work and what happens in a session? →- 07
Target memory
Target A specific memory or situation selected for therapeutic work. Selection belongs within a formulation and does not mean searching for, completing or validating unknown memories.
Read the related guide: The 8 phases of EMDR: what happens at each stage →- 08
Negative cognition
A negative self-belief linked to the target memory, such as a sense of danger or lack of control. It is identified without assuming that it objectively describes the person.
Read the related guide: The 8 phases of EMDR: what happens at each stage →- 09
Positive cognition
An adaptive belief the person would prefer to associate with the memory, such as present safety or choice. It should be relevant and credible rather than imposed as positive thinking.
Read the related guide: The 8 phases of EMDR: what happens at each stage →- 10
VOC
Validity of Cognition A subjective scale for rating how true a positive cognition feels in relation to the target. It is an in-session measure, not a diagnosis or objective test.
Read the related guide: The 8 phases of EMDR: what happens at each stage →- 11
SUD / SUDS
Subjective Units of Disturbance A subjective scale, often 0 to 10, for tracking distress related to a target. It guides the process but does not replace functional measures or later follow-up.
Read the related guide: The 8 phases of EMDR: what happens at each stage →- 12
Desensitization
The phase using bilateral-stimulation sets while related memory material is noticed. The goal is not to numb the person or erase the memory.
Read the related guide: The 8 phases of EMDR: what happens at each stage →- 13
Installation
The phase strengthening the association between the processed memory and a chosen adaptive cognition. It does not implant an externally supplied idea or memory.
Read the related guide: The 8 phases of EMDR: what happens at each stage →- 14
Body scan
A guided check for physical sensations that may remain associated with the target after other phases. It is not a medical examination and does not replace assessment of physical symptoms.
Read the related guide: The 8 phases of EMDR: what happens at each stage →- 15
Closure
The phase ending an appointment with present orientation, a state check and a plan for what may arise later. It is needed even when target processing is unfinished.
Read the related guide: What can happen after an EMDR session? →- 16
Reevaluation
A later review of the memory, distress, cognition, body and functioning to see whether change has held and determine the next step.
Read the related guide: The 8 phases of EMDR: what happens at each stage →- 17
Reprocessing
Therapeutic work with memories, associations, emotions, beliefs and sensations within the protocol. It is not literal copying, deletion or relocation of information in the brain.
Read the related guide: How does EMDR work and what happens in a session? →- 18
Resourcing
Resources Strategies practised to support orientation, regulation, control and support before or during work. They are not a test to pass and do not guarantee that everyone is ready to process.
Read the related guide: How to prepare for your first EMDR session →- 19
Safe or calm place
A preparation exercise using an image or experience associated with calm or steadiness. “Safe” does not fit everyone, so the resource should be adapted rather than forced.
Read the related guide: How to prepare for your first EMDR session →- 20
Dissociation
A broad term for disconnection across attention, memory, identity, perception or body. Its presence and severity require assessment and cannot be diagnosed from one isolated sensation.
Read the related guide: EMDR and dissociation: assessment, preparation and pacing →- 21
Flashback
Re-experiencing in which a traumatic memory feels intensely present. It may involve images, sounds, emotions or physical sensations and warrants assessment when safety or functioning is affected.
Read the related guide: EMDR for PTSD and trauma: evidence, process and limits →- 22
Trigger
An internal or external cue associated with an emotional, physical or memory response. Identifying it supports formulation, but not every intense reaction comes from trauma.
Read the related guide: EMDR for PTSD and trauma: evidence, process and limits →- 23
Three-pronged protocol
Past, present and future A framework organizing targets around past experiences, present triggers and desired future responses. It does not require chronological work or processing every memory.
Read the related guide: What is EMDR therapy? Meaning, phases and evidence →- 24
Window of tolerance
A clinical metaphor for a range of arousal in which a person can remain present and respond flexibly. It is not an exact measurement or an EMDR-exclusive concept.
Read the related guide: EMDR for complex trauma: preparation, pacing and safety →
How to use this glossary
Can this glossary diagnose me?
No. It defines terms for information only; one word or isolated experience cannot confirm a diagnosis or indicate treatment.
Why do some EMDR translations vary?
Much of the terminology originated in English, and training systems use variants. We include aliases where they help identify the same concept.
Are tapping and eye movements EMDR?
They are possible forms of bilateral stimulation, but without assessment, preparation, guided processing, closure and follow-up they are not the complete therapy.
Understand the process. Then compare practitioners.
The glossary informs; the directory lets you compare training, language, location and delivery.