How Do Eye Movements Work in Accelerated Resolution Therapy?
Accelerated Resolution Therapy, or ART, has a feature that is immediately noticeable:
The eye movements.
During ART, the therapist guides the client through sets of horizontal eye movements while the client works with memories, images, emotions, and body sensations.
For someone seeing ART for the first time, the obvious question is:
Why would moving my eyes change how a traumatic memory feels?
That is an excellent question.
And the most scientifically accurate answer is:
We do not yet know exactly.
ART has research showing promising clinical outcomes, including randomized research in people with combat-related PTSD and earlier prospective studies showing substantial symptom reductions over relatively few sessions. But those studies primarily examined whether ART helped—not precisely which component caused the change.
So when we talk about how ART's eye movements may work, we need to distinguish between what has been demonstrated specifically in ART and what we can reasonably infer from the much larger body of experimental research on eye movements and emotional memory.
That distinction matters.
What happens during ART?
ART is a structured therapy that combines several elements.
Depending on the target and the client, the work may involve:
recalling a distressing memory,
noticing associated body sensations,
completing sets of visually guided eye movements,
allowing sensations to change,
working with distressing imagery,
and intentionally changing how certain images are represented.
ART research has described the treatment as an exposure-based psychotherapy incorporating eye movements and imagery-based procedures designed to reduce distress associated with traumatic memories.
That means ART is not simply:
“Think about something upsetting while moving your eyes.”
The eye movements occur within a larger therapeutic sequence.
Are ART eye movements the same as EMDR eye movements?
They look similar.
They are not used identically.
Both ART and EMDR involve visually guided eye movements while emotionally meaningful material is active.
That creates an obvious area of overlap.
But ART and EMDR have different protocols, different pacing, different therapist instructions, and different ways of working with imagery.
In EMDR, bilateral stimulation occurs within an eight-phase protocol and is typically paired with relatively open-ended associative processing.
ART is more directive and structured, including specific attention to body sensations and imagery procedures.
So while research on EMDR eye movements can help us generate hypotheses about ART, we should not simply assume that every mechanism is identical.
The strongest clue may come from working-memory research
One of the strongest explanations for why visually guided eye movements can affect emotional memories comes from working-memory theory.
Working memory is the limited-capacity system we use to temporarily hold information in mind while doing something else.
For example:
Try holding a seven-digit number in your head while solving a math problem.
Both tasks compete for limited mental resources.
Emotional memories also use working-memory capacity.
So do eye movements.
Experimental research on EMDR has repeatedly found that when people recall emotionally charged memories while simultaneously performing eye movements, those memories can subsequently become less vivid and less emotionally intense than memories recalled without the additional task.
That may be highly relevant to ART.
Think of the brain as having limited processing bandwidth
Imagine bringing a painful memory to mind.
You see the image.
You feel the body response.
You notice the emotion.
The memory is consuming a significant amount of mental bandwidth.
Now your therapist asks you to track a moving hand with your eyes.
Your brain has another job.
Track this.
Keep following.
Stay with what is happening internally.
The two tasks compete.
There may now be fewer working-memory resources available to maintain the traumatic image in exactly the same vivid, emotionally intense form.
That does not necessarily make the memory disappear.
It may change the quality of how the memory is experienced.
Could this explain what happens in ART?
Possibly.
ART deliberately combines eye movements with activation of emotionally meaningful material.
That creates the kind of dual-task situation studied extensively in the broader eye-movement literature.
But this is where we need scientific discipline.
Working-memory theory has been studied extensively in relation to EMDR and laboratory memory tasks.
It has not been established as the definitive mechanism of ART.
ART may benefit from similar working-memory processes.
That is a reasonable hypothesis.
It is not yet the same thing as ART-specific mechanistic proof.
Why might images become less vivid?
One of the most replicated findings in eye-movement research is that emotional memories can become less vivid after being recalled while performing demanding eye movements.
A classic experimental study found that eye movements reduced the vividness and emotionality of unpleasant autobiographical memories, and importantly, the effect occurred when participants held the memories in mind during the eye movements.
More recent reviews have continued to find substantial support for the working-memory explanation and a relationship between the amount of cognitive taxation and reductions in memory vividness and emotionality.
This becomes particularly interesting in ART because ART does not work only with verbal thoughts.
It works heavily with imagery.
ART places unusual emphasis on imagery
One of the distinctive features of ART is its use of imagery.
Clients may work with distressing scenes and then use structured imagery procedures to change aspects of what is represented internally.
This does not mean pretending the event did not happen.
The factual memory remains.
But the internal image associated with the event may change.
That combination raises an interesting scientific possibility.
Eye movements may reduce the vividness or emotional intensity of distressing imagery while ART's imagery procedures give the client an opportunity to construct a different internal representation.
That may help explain why some clients report that they still remember what happened, but the image no longer feels the same.
However, again, ART-specific studies have not yet isolated these components well enough to tell us exactly how much change comes from the eye movements, how much comes from imagery procedures, and how the components interact.
What does imagery rescripting have to do with it?
ART also shares conceptual territory with imagery rescripting.
Imagery rescripting is a therapeutic approach in which distressing internal imagery is intentionally changed in ways that alter emotional meaning.
Imagery rescripting has been studied separately from ART and has demonstrated therapeutic effects in trauma-related treatment.
A 2024 study comparing mechanisms in EMDR and imagery rescripting found that both treatments reduced PTSD symptoms, while researchers examined different pathways of change involving memory distress, vividness, and beliefs.
ART combines eye movements and structured imagery within one protocol.
That makes ART mechanistically fascinating.
It also makes it harder to claim that one element explains everything.
Could ART involve both working-memory taxation and imagery rescripting?
That is certainly plausible.
One possible model looks like this:
The distressing memory is activated.
Eye movements compete for working-memory resources.
The image becomes less vivid or emotionally intense.
Body sensations are noticed and allowed to change.
The client then works with imagery in a more flexible way.
The memory remains part of autobiographical history, but its sensory and emotional representation may be altered.
That is a coherent hypothesis.
It fits with findings from broader memory research.
But it should still be described as a hypothesis rather than settled neuroscience.
What happens to the body sensations during ART?
ART pays considerable attention to physical sensations associated with distress.
A client may notice:
tightness,
pressure,
heat,
nausea,
tension,
pain,
a sinking feeling,
or another physical response.
The therapist guides eye movements while the client notices what happens to those sensations.
Sometimes sensations shift.
Sometimes they move.
Sometimes they reduce.
Sometimes they reveal another emotional layer.
Why?
Again, we do not yet have a definitive ART-specific biological explanation.
Changes could reflect reductions in emotional arousal, attentional shifts, expectancy, exposure processes, working-memory competition, autonomic regulation, or interactions among several of these.
ART's clinical protocol recognizes body sensations as important information.
Science has not yet completely mapped what produces those shifts.
Is ART stimulating both hemispheres of the brain?
You will sometimes hear eye-movement therapies explained this way:
“The left-right movements activate both hemispheres.”
That explanation is appealing because it sounds intuitive.
But it is too simplistic.
The brain is not divided into two independent halves that need to be alternately switched on.
Complex memory processing involves distributed networks interacting across many brain regions.
There is not good evidence establishing that ART works because eye movements simply “balance” or “integrate” the two hemispheres.
The same caution applies to EMDR.
Broader reviews of bilateral stimulation and EMDR mechanisms have found stronger support for working-memory and attentional accounts than for simplistic hemisphere-integration explanations.
Does ART “rewire the brain”?
That phrase is everywhere in mental health marketing.
It is also usually too vague to be very useful.
All learning involves changes in the brain.
Psychotherapy involves learning.
So in an extremely broad sense, effective psychotherapy changes brain functioning.
But saying ART “rewires your brain” makes it sound as though we have identified a specific neural circuit that ART directly repairs.
We have not.
ART outcome research is promising.
ART mechanism research is still developing.
There is a big difference between those statements.
What about memory reconsolidation?
Memory reconsolidation is another concept often used to explain therapies that change emotional memories.
The basic idea is that when a memory is retrieved, it may temporarily become more modifiable before being stored again.
If new information or a new emotional experience occurs while that memory is active, the subsequently stored memory may differ from the previous version.
That makes reconsolidation an intriguing possible explanation for some trauma therapies.
ART certainly creates conditions that make the idea appealing:
The memory is activated.
The client's experience changes.
Imagery may change.
Body sensations may change.
The memory is then encountered differently.
But describing ART as a “memory reconsolidation therapy” as though the mechanism were definitively proven would go beyond the evidence.
Reconsolidation may be involved.
We do not yet know exactly how.
Does ART erase or replace the memory?
No.
ART is not memory deletion.
And the imagery component does not mean clients become confused about what actually happened.
The autobiographical knowledge remains.
What may change is the emotional and sensory experience attached to the memory.
You may still know:
what happened,
who was there,
what was said,
and why it mattered.
But the internal image may not feel as disturbing.
The body may not respond as intensely.
The memory may feel farther away.
The goal is not:
“That never happened.”
The goal is closer to:
“That happened, but my nervous system no longer responds as though it is happening now.”
Why might ART feel fast?
Some ART studies have reported substantial symptom changes within a relatively small number of sessions.
In one randomized trial involving 57 service members and veterans with combat-related PTSD symptoms, ART was delivered in an average of 3.7 sessions and produced greater reductions in PTSD, depression, anxiety, and trauma-related guilt than an attention-control condition.
Earlier prospective research also found significant symptom reductions after a median of three sessions.
That is interesting.
But treatment speed does not tell us why the treatment worked.
And it certainly does not mean every client should expect the same number of sessions.
Different clients have different histories, targets, levels of complexity, and treatment needs.
Do the eye movements themselves make ART effective?
We do not know.
This is one of the most important limitations in the ART research literature.
The existing ART outcome studies evaluate the whole ART protocol.
They do not typically dismantle ART into separate conditions such as:
ART with eye movements,
ART without eye movements,
imagery procedures alone,
exposure alone,
or eye movements alone.
Without dismantling studies like those, we cannot determine how much of ART's effect comes from each component.
That is an important research question for the future.
EMDR research gives us clues—but not proof
EMDR has been studied much more extensively than ART.
That literature gives us useful clues because both therapies involve eye movements during emotionally meaningful recall.
Experimental research supports the idea that eye movements can reduce memory vividness and emotionality.
At the same time, even within EMDR research, the exact role of eye movements remains debated.
One randomized PTSD study comparing moving-eye fixation, stationary visual fixation, and exposure without visual focus found improvement in all conditions and did not find an advantage for eye movements over stationary visual fixation, underscoring that mechanisms may be more complicated than “eye movements alone.”
A newer randomized study also failed to find broad specific benefits of eye movements over retrieval alone on several physiological stress-reactivity measures, though one recovery measure favored eye movements.
That is exactly why mechanistic claims should remain careful.
Could attention itself matter?
Possibly.
Both ART and EMDR create an unusual attentional state.
Part of your attention is on the internal material.
Part is on the therapist's moving hand.
Part is monitoring body sensations.
Part may be noticing what changes.
This divided or dual attention may help someone remain connected to the present while contacting distressing memory material.
That could reduce the sense of being completely immersed in the memory.
Research examining EMDR mechanisms has considered dual attention, working-memory load, orienting responses, emotional arousal, and other processes. No single explanation currently accounts for all findings.
ART may similarly involve several mechanisms operating together.
Why might keeping one foot in the present matter?
Traumatic memories can feel different from ordinary autobiographical memories.
Instead of:
“I remember that happening,”
the experience can feel more like:
“It is happening again.”
The image is vivid.
The body reacts.
The emotion arrives immediately.
The person may know intellectually that the event is over while simultaneously experiencing it as present.
A dual-attention process may help create an important contrast:
Part of you contacts the memory.
Part of you remains oriented to the room, the therapist, and the moving visual stimulus.
You are there.
And you are here.
That distinction may matter in trauma processing.
Why can ART work without detailed retelling?
ART does not require the client to verbally narrate every detail of the trauma.
That sometimes confuses people.
How can therapy work if the therapist does not know the entire story?
Because the client's nervous system and memory system already contain the material.
The client can activate an internal image, memory, emotion, or sensation without verbally explaining every detail.
The therapist needs enough information to assess the target and guide the process safely.
But processing does not necessarily require a detailed verbal account.
That can be especially meaningful for clients who have already told their story repeatedly—or who simply do not want to.
What probably should not be said about ART eye movements
I would be cautious about claims such as:
“ART resets your amygdala.”
“ART rewires your neural pathways.”
“ART synchronizes your brain hemispheres.”
“ART moves trauma from the emotional brain into the logical brain.”
“Eye movements permanently erase traumatic memories.”
“ART recreates REM sleep.”
Those explanations are catchy.
They are also much more definitive than current ART science supports.
A better explanation is:
ART combines memory activation, visually guided eye movements, attention to body sensations, and structured imagery procedures.
Broader experimental research suggests eye movements can reduce the vividness and emotional intensity of memories, possibly through working-memory competition.
ART-specific research shows promising clinical outcomes.
But researchers have not yet identified a single proven biological mechanism explaining ART.
That answer is less flashy.
It is also much more scientifically responsible.
So what do we actually know?
We know ART includes eye movements as part of a structured trauma-focused protocol.
We know ART clinical trials have reported meaningful symptom reductions in PTSD-related populations.
We know from broader experimental research that eye movements performed while recalling emotional memories can reduce subsequent vividness and emotionality.
We know working-memory competition is one of the strongest current explanations for that effect.
We know other attention-demanding tasks can sometimes produce similar memory effects, suggesting that “bilateral stimulation” is probably not adequately explained by a simple left-brain/right-brain mechanism.
And we know ART-specific mechanistic research is not yet strong enough to tell us exactly what each element of the protocol contributes.
All of those things can be true at the same time.
Why ART and EMDR may feel different even if eye movements overlap
This is where the comparison becomes particularly interesting.
If working-memory competition contributes to both therapies, why can ART and EMDR feel so different?
Because the eye movements are only one part of each treatment.
The protocols differ in:
how the target is approached,
what the therapist asks the client to notice,
how associative material is handled,
how body sensations are incorporated,
how imagery is used,
how directive the therapist is,
and what happens between sets of eye movements.
That means two therapies can share one potential mechanism while still producing very different clinical experiences.
Why I care about understanding the mechanism
I use both ART and EMDR.
Learning both makes the similarities impossible to miss.
It also makes the differences impossible to ignore.
Both use eye movements.
Both work with emotionally charged memory.
Both can produce striking shifts in how memories feel.
But simply saying “bilateral stimulation processes trauma” does not actually explain very much.
I think clients and therapists deserve better than a neuroscience slogan.
It is more interesting to ask:
What is the eye movement doing to attention?
What happens to working memory?
Why does imagery lose vividness?
What changes in the emotional response?
How does the body response change?
What happens when new imagery is introduced?
Which parts of ART and EMDR overlap mechanistically, and which do not?
Those are the questions worth exploring.
Working with Laura Geftman, LCSW
I use Accelerated Resolution Therapy and EMDR as part of a broader trauma-focused practice.
My work may also incorporate IFS-informed therapy, Cognitive Processing Therapy, Prolonged Exposure principles, CBT, psychodynamic therapy, attachment work, and other approaches depending on the client and the clinical question.
I offer focused trauma therapy and therapy intensives for adults in Pennsylvania, New Jersey, New York, and Florida.
In-person therapy intensives are available in Ardmore, PA, on the Main Line near Philadelphia.
Virtual therapy may also be available when clinically appropriate.
Interested in ART, EMDR, or focused trauma therapy?
If you understand what happened but continue to feel stuck around a particular memory, image, trigger, body response, or emotional reaction, ART, EMDR, or another focused trauma approach may be worth exploring.
The goal is not to choose a modality because it sounds impressive.
It is to understand what you need and choose the approach that fits the client, the target, and the moment.
Suggested Reading
If you are interested in ART, EMDR, eye movements, bilateral stimulation, or trauma processing, these related articles may be helpful:
FAQ
How do eye movements work in Accelerated Resolution Therapy?
The exact mechanism has not been established. ART combines visually guided eye movements with memory activation, body awareness, and imagery procedures. Broader eye-movement research suggests that eye movements may compete for limited working-memory resources, which can reduce the vividness and emotional intensity of distressing memories. ART-specific research has not yet proven that this is its definitive mechanism.
Are ART eye movements the same as EMDR?
ART and EMDR both use visually guided eye movements while emotionally meaningful material is active, but the protocols use them differently. ART is generally more structured and directive and includes specific imagery procedures, while EMDR typically allows more associative processing.
Does ART stimulate both sides of the brain?
There is not strong evidence that ART works simply by alternating activation between the left and right brain hemispheres. Research on eye movements supports more complex explanations involving working memory, attention, emotional processing, and memory.
Does ART rewire the brain?
“Rewiring the brain” is too broad to explain ART scientifically. Effective psychotherapy involves learning and can produce changes in brain function, but ART research has not established a specific neural circuit that ART uniquely rewires.
Does ART erase traumatic memories?
No. ART is not memory deletion. Clients generally still know what happened. What may change is the vividness, emotional intensity, body response, or internal imagery associated with the memory.
Is working-memory theory proven for ART?
No. Working-memory theory has strong experimental support in eye-movement and EMDR research, but it has not yet been specifically established as ART's mechanism of action. It is a plausible explanation for at least part of what eye movements may contribute.
What role does imagery play in ART?
ART places substantial emphasis on imagery. Clients may work with distressing images and intentionally alter aspects of their internal representation. This may overlap with mechanisms studied in imagery-rescripting research, although ART-specific dismantling studies are needed to determine exactly how eye movements and imagery interact.
Is ART supported by research?
ART has a smaller evidence base than EMDR, CPT, or Prolonged Exposure, but published studies include prospective research and a randomized controlled trial reporting reductions in PTSD and related symptoms. More independent, larger, and mechanistic studies are still needed.
Why can ART and EMDR feel different if both use eye movements?
Because eye movements are only one component of each therapy. ART and EMDR differ in protocol structure, therapist direction, imagery procedures, pacing, and what happens between sets of eye movements. Shared eye movements do not make them the same treatment.