Eye Movement Desensitisation and Reprocessing, commonly known as EMDR, is a therapy that often looks unusual to those seeing it for the first time. Unlike other psychotherapies that focus on discussing a distressing memory in exhaustive detail, this treatment uses side-to-side eye movements, rhythmic taps, or auditory tones. While it may seem like a modern trend, it is actually a robust, evidence-based therapy recommended by the NHS and the National Institute for Health and Care Excellence (NICE).
To truly understand why EMDR therapy is so effective, we must look past the surface and explore the biological changes it triggers within the mind. It is not just a psychological tool; it is a physiological intervention that helps the brain finish the work it started when a difficult event first occurred. This process moves beyond the limits of language, working directly with the brain’s built-in survival and processing systems to address mental health conditions and distressing life experiences.
The Brain and PTSD: Why Memories Get Stuck
To understand how EMDR changes neural pathways, we first need to look at what happens when we experience a distressing event. Under normal circumstances, our brain processes information and stores it as a memory that feels like it belongs in the past. However, when we face traumatic experiences or even a series of “small t” life stressors, this processing system can become overwhelmed and “freeze” the experience in its raw, unfiltered form. This is often the root cause of post traumatic stress disorder.
The Amygdala: The Alarm System During Therapy
Think of the amygdala as your brain’s internal alarm or smoke detector. Its job is to spot danger and trigger the “fight or flight” response. When you experience trauma, the amygdala becomes hyper-active. It stays on high alert, even long after the danger has passed. In an EMDR session, we look at how to quieten this alarm. In its hyper-active state, the brain is constantly scanning for threats, making it impossible for patients to feel truly relaxed or safe in the present moment, leading to heightened stress responses.
The Hippocampus: The Librarian and Treatment Focus
The hippocampus is responsible for dating and filing our memories. It acts like a librarian, taking an experience and putting it on a shelf marked “the past.” During a traumatic event, high levels of stress hormones like cortisol can scramble the hippocampus. Instead of being filed away as a historical fact, traumatic memories remain “live” and fragmented. Because it hasn’t been given a proper date stamp, the brain reacts as if the event is happening right now, leading to vivid flashbacks and intense ptsd symptoms.
The Prefrontal Cortex: The Logic Centre
The prefrontal cortex is the part of the brain used for rational thinking and emotional regulation. During trauma, this area often “shuts down” to allow survival instincts to take over. This is a brilliant survival tactic in the moment, but it becomes a major problem for long-term recovery. Without the logic centre being online, the brain cannot tell itself: “I am safe now.” EMDR treatment aims to reconnect these neural pathways.
The AIP Model: How EMDR Therapy Facilitates Natural Healing
At Select Psychology, our approach is based on the Adaptive Information Processing (AIP) model, as defined by Francine Shapiro, the creator of EMDR. This theory suggests that our brains have an innate, natural healing process to recover from psychological injury.
Trauma is like a splinter or a piece of debris lodged in a wound. It represents “maladaptive” memory networks—information that has been stored in a physical way that is unhelpful and painful. EMDR acts as the professional tool that removes the splinter, allowing the brain’s natural “metabolism” to resume. By using bilateral stimulation, we help the brain “digest” the undigested parts of a memory, reducing the emotional impact of the event.
What Happens During an EMDR Session?
The most distinct part of this treatment is bilateral stimulation (BLS), which serves as an external stimulus. This usually involves following an EMDR therapist’s fingers with your eyes, but it can also involve hand-taps or auditory tones. While this might feel simple, the neurological mechanism of action is profound. If you’re new to EMDR and want a full beginner’s guide, check out Starting EMDR: A Simple Guide to What Happens in Your Sessions”
The REM Sleep Connection and Scientific Studies
One of the leading theories on why eye movements work is their link to Rapid Eye Movement (REM) sleep. Studies and extensive research suggest that EMDR appears to “kickstart” this same natural memory-processing mechanism while we are wide awake. A systematic review of the efficacy of emdr has shown it to be an effective treatment for a range of issues, including depression and other trauma. This is why it has become standard in clinical practice.
Interhemispheric Communication and Memory Reconsolidation
The human brain is divided into two halves. Trauma often causes a breakdown in communication between the emotional right side and the logical left side. Bilateral stimulation encourages interhemispheric communication, facilitating memory reconsolidation. This allows emotional memories to be updated with new, safer information, effectively changing how they are stored in the brain.
The Dual Focus Mechanism: Safety with your Therapist
A common fear about trauma therapy is the worry of being overwhelmed. An EMDR therapist uses a specific procedure to ensure you remain grounded. During a session, you are never asked to dive head-first into the trauma. Instead, you keep “one foot in the past” and “one foot firmly in the present” with your therapist.
This dual focus ensures you remain grounded. It allows you to view the memory as an “observer” rather than a participant. By taxing the brain’s “working memory,” the eye movements actually make the traumatic images feel less vivid. Successful EMDR therapy relies on this sense of safety and controlled processing.
Comparing EMDR to Other Therapies
Because EMDR targets the biological root of how memories are stored, it is often more efficient than other therapies like somatic experiencing or traditional talk therapies for specific issues. For example, while Cognitive Behavioural Therapy (CBT) is excellent for restructuring thoughts, EMDR focuses more heavily on the physiological storage of the memory itself. In the fields of psychiatry and psychology, the effectiveness of emdr therapy is highly regarded by professional bodies such as the EMDR International Association (EMDRIA).
Physical Transformation and PTSD Recovery
The most incredible aspect of EMDR therapy is that it leads to measurable, physical changes in brain activity. After a clinical trial or course of treatment, brain scans often show a significant reduction in amygdala activity. Simultaneously, there is increased activation in the prefrontal cortex, showing that the “logic centre” has regained its rightful place. This is why it is a leading choice for PTSD recovery.
Why This Matters for Your Recovery
At Select Psychology, we see the benefits of how this therapy work can help with a wide range of concerns beyond PTSD, including:
- Phobias and intense fears.
- Complicated grief and loss.
- Performance anxiety or low self-esteem.
- “Small t” traumas like childhood bullying or workplace stress.
By focusing on how the brain processes information, EMDR offers a path to recovery that feels less like “managing” symptoms and more like truly resolving the underlying cause.
Conclusion
Understanding how EMDR works in the brain takes the mystery out of the process, revealing a highly logical and evidence-based path to recovery. By tapping into the brain’s natural ability to process information, this therapy doesn’t just help you cope with the past – it allows your brain to physically re-file those memories so they no longer hold power over your present. Healing is not just a psychological shift; it is a biological one.
At Select Psychology, we’re here to guide you through that journey. If you feel ready to move from simply surviving to truly thriving, the right support can make all the difference. Take the first step toward a calmer mind by booking an initial consultation with our accredited team for EMDR therapy.