Centre Self Collective

The Science Behind EMDR: Why It Works On Trauma The Way It Does

The Science Behind EMDR: Why It Works On Trauma The Way It Does

If you have ever sat in talk therapy and thought I understand this completely and I still feel exactly the same, you are describing one of the central limits of cognitive insight when it comes to trauma.

You can know that the thing that happened was not your fault. You can know your reaction makes sense. You can have explained it, journalled it, traced it back to its origin, and your body can still respond as if the thing is happening now. Your shoulders still rise. Your stomach still drops. The memory still has its grip.

This is the gap EMDR was designed to close.

What EMDR actually is

EMDR stands for Eye Movement Desensitisation and Reprocessing. It is an evidence based therapy developed in the late 1980s by psychologist Francine Shapiro, and it has since been studied in dozens of randomised controlled trials and endorsed by major international health bodies as a frontline treatment for trauma.

The therapy works on a simple but counter intuitive premise: that trauma is not stored in the brain the same way an ordinary memory is. An ordinary memory has been processed, filed, integrated. A traumatic memory has not. It sits unprocessed in the nervous system, often with the original sensations, images, and beliefs still attached, which is why it can feel less like remembering and more like reliving.

EMDR uses bilateral stimulation, typically guided eye movements but sometimes taps or tones, to engage both hemispheres of the brain while you hold the memory in mind. It sounds unusual when you first hear about it. Most people who have done EMDR will tell you it felt unusual to start with too. But something about that dual processing appears to let the brain do what it was always trying to do: take the unprocessed material and finally integrate it, so the memory becomes a memory rather than a live wire.

The evidence base, briefly

EMDR is one of only two psychotherapies recommended by the World Health Organisation for the treatment of post traumatic stress disorder in adults, adolescents, and children, alongside trauma focused cognitive behavioural therapy. The American Psychological Association, the International Society for Traumatic Stress Studies, and the US Department of Veterans Affairs have all reached the same conclusion through their own independent reviews of the research.

What that means in practice is that EMDR is not an alternative therapy or an experimental one. It makes up the small group of treatments with the strongest evidence base for trauma. The endorsements span four decades of research and multiple continents, which is the kind of consensus that does not happen by accident.

Why it can help when the body is also holding the trauma

One of the things people often notice when they begin EMDR is that the work does not stay in the mind. Trauma lives in the body too, in the held tension, the startle response, the chronic pain that has never had a clear explanation, the sleep that will not settle. Because EMDR works at the level of how memory is stored rather than how it is talked about, the body often begins to soften in ways that can surprise people.

This is not a guarantee. EMDR is not magic, and physical symptoms are complex and individual. But the connection between trauma and the body is well established, and the same processing that releases the emotional grip of a memory can release some of what the body has been holding alongside it.

What about intensive EMDR

There is also a growing body of evidence for delivering EMDR in an intensive format rather than weekly sessions, particularly for complex trauma. A small but striking case series by Bongaerts and colleagues in 2017 looked at seven people with complex PTSD and multiple comorbidities; after a programme of intensive EMDR over two blocks of four consecutive days, four of the seven no longer met diagnostic criteria for PTSD. A later study by Hurley in 2018 found that twice daily EMDR sessions over ten days produced outcomes equivalent to weekly sessions over a much longer period, with gains maintained at one year follow up.

This is the research underpinning our EMDR immersives. If you would like to read more about how that format works in practice, you can find it here.

If you are curious

You do not need to understand the mechanism to benefit from EMDR. Most people do not. But if you are someone who reads before you reach out, who wants to know why something works before you trust it with your nervous system, this is where the current evidence sits.

If you would like to talk to someone about whether EMDR might be a fit for you, we offer a 15 min obligation free consultation with Hannah our Admin and Client Support officer as a starting point. There is no expectation that you will book anything afterwards. The conversation exists to answer your questions.

EMDR will not be the right therapy for every person or every moment. But for the people it does help, it tends to help in a way that feels different from what they have tried before, because it is working on a different layer.

Further reading

If you want to go deeper into the research, the EMDR Institute keeps a comprehensive overview of the international treatment guidelines, meta analyses, and clinical applications here. The EMDR Association of Australia also hosts a clear FAQ for the general public here.

 

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Ready to Connect ?

Submit an enquiry, book a call, or phone us directly – Hannah, our friendly Admin and Client Support officer, will be the first to greet you.

Are you enquiring about a specific therapist? Click Here

Ready to Connect ?

Submit an enquiry, book a call, or phone us directly – Hannah, our friendly Admin and Client Support officer, will be the first to greet you.

Are you enquiring about a specific therapist? Click Here

Ready to Connect ?

Submit an enquiry, book a call, or phone us directly – Hannah, our friendly Admin and Client Support officer, will be the first to greet you.

Are you enquiring about a specific therapist? Click Here

Centre Self Collective values the lived experience and contributions of people from all cultures, genders, sexualities, bodies, spiritualities, ages, abilities and backgrounds. We are committed to cultivating inclusive environments and are dedicated to building a sustainable and an environmentally aware practice. 

Acknowledgement and Commitment to First Nations Justice. Centre Self Collective acknowledges the Wurundjeri Woi Wurrung people of the Kulin Nation as the Traditional Custodians of the land on which we live, work, and offer care. We recognise their deep and enduring connection to land, waters, skies, and community - and we pay our respects to Elders past and present. We honour the wisdom, strength, and resilience of Aboriginal and Torres Strait Islander peoples across all communities. As social workers and mental health practitioners, we hold a deep awareness of the systemic harm our profession has contributed to, including the forced removal of children, policies of assimilation, and the ongoing disruption of families, cultures, and Country. These injustices continue to reverberate through intergenerational trauma and ongoing structural inequities. We recognise that sovereignty was never ceded. Centre Self Collective stands in solidarity with Aboriginal and Torres Strait Islander peoples. We wholeheartedly support the Uluru Statement from the Heart, the journey toward Treaty in Victoria, and the principle of Aboriginal self-determination. 

©

2026

Centre Self Collective, All rights reserved.

Centre Self Collective values the lived experience and contributions of people from all cultures, genders, sexualities, bodies, spiritualities, ages, abilities and backgrounds. We are committed to cultivating inclusive environments and are dedicated to building a sustainable and an environmentally aware practice. 

Acknowledgement and Commitment to First Nations Justice. Centre Self Collective acknowledges the Wurundjeri Woi Wurrung people of the Kulin Nation as the Traditional Custodians of the land on which we live, work, and offer care. We recognise their deep and enduring connection to land, waters, skies, and community - and we pay our respects to Elders past and present. We honour the wisdom, strength, and resilience of Aboriginal and Torres Strait Islander peoples across all communities. As social workers and mental health practitioners, we hold a deep awareness of the systemic harm our profession has contributed to, including the forced removal of children, policies of assimilation, and the ongoing disruption of families, cultures, and Country. These injustices continue to reverberate through intergenerational trauma and ongoing structural inequities. We recognise that sovereignty was never ceded. Centre Self Collective stands in solidarity with Aboriginal and Torres Strait Islander peoples. We wholeheartedly support the Uluru Statement from the Heart, the journey toward Treaty in Victoria, and the principle of Aboriginal self-determination. 

©

2026

Centre Self Collective, All rights reserved.

Centre Self Collective values the lived experience and contributions of people from all cultures, genders, sexualities, bodies, spiritualities, ages, abilities and backgrounds. We are committed to cultivating inclusive environments and are dedicated to building a sustainable and an environmentally aware practice. 

Acknowledgement and Commitment to First Nations Justice. Centre Self Collective acknowledges the Wurundjeri Woi Wurrung people of the Kulin Nation as the Traditional Custodians of the land on which we live, work, and offer care. We recognise their deep and enduring connection to land, waters, skies, and community - and we pay our respects to Elders past and present. We honour the wisdom, strength, and resilience of Aboriginal and Torres Strait Islander peoples across all communities. As social workers and mental health practitioners, we hold a deep awareness of the systemic harm our profession has contributed to, including the forced removal of children, policies of assimilation, and the ongoing disruption of families, cultures, and Country. These injustices continue to reverberate through intergenerational trauma and ongoing structural inequities. We recognise that sovereignty was never ceded. Centre Self Collective stands in solidarity with Aboriginal and Torres Strait Islander peoples. We wholeheartedly support the Uluru Statement from the Heart, the journey toward Treaty in Victoria, and the principle of Aboriginal self-determination. 

©

2026

Centre Self Collective, All rights reserved.