EMDR Therapy Sydney|Clinical Psychologist

Trauma, grief and anger relief

How does EMDR work? A neuroscience explanation.

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With more than a quarter-century of credibility, Eye Movement Desensitisation and Reprocessing (EMDR) stands as an evidence-based treatment. The query “Does EMDR work?” has evolved into a grander question: “How does EMDR work?”

There are a number of theories but the one that makes sense to me is in the article Eye Movement Desensitization and Reprocessing and Slow Wave Sleep which I will try and summarise as I understand it (all errors of interpretation are mine, email your corrections).

The Overwhelm Loop: Emotional vs. Rational

When we experience something overwhelming and relive the traumatic event there is reduced control of the pre-frontal cortex over the activated amygdala and hippocampus (the amygdala and hippocampus become overstimulated). In other words, when you are triggered, the rational thinking part of your brain can’t control the emotional part of your brain. This is why when you get triggered, you can’t think and you feel overwhelmed.

Unprocessed Stuck Memories

Traumatic memories are “stuck” in the amygdala-hippocampal complex and when triggered, they seem to occur in the present. “Stuck” memories are thought to be unprocessed memories.

The Sleep Connection: EMDR and Dream Sleep

During sleep, we process and consolidate memories from the hippocampus to the neocortex. Normal, less traumatic memories, don’t become “stuck”, because at night when we dream (Rapid Eye Movement or REM phase), these are moved out of the amygdala-hippocampal complex and processed by the rest of the brain. This is one of the reasons we feel so much better after a good night’s sleep.

Neuroscientists propose that what happens during REM (dream) sleep happens during EMDR.

During EMDR, therapists move your eyes from side to side whilst getting you to focus on a fragmented traumatic memory or emotion. Much like when your eyes move side to side when you dream.

EMDR’s Brain Synchrony

EEG tracings show that the eye movements (much like in REM sleep) elicit a synchronisation of all cortical activity at a frequency in the delta range like slow-wave sleep. EMDR temporarily slows your over-stimulated amygdala down and synchronises your brain waves helping you process the traumatic memory.

Trauma Unraveled

This suggests that during EMDR therapy the traumatic memories are continuously “reactivated, replayed and encoded into existing memory networks”. In other words,  EMDR helps traumatic memories become “unstuck” and processed like normal, less traumatic memories.

To quote the article:

“In fact, we posit that bilateral stimulation mimics the low-frequency stimulation typical of SWS (slow-wave sleep), inducing a depotentiation of the AMPA receptors of amygdalar synapses, which in turn lead to a weakening of the traumatic memory. This reduction of the over-potentiation of amygdalar synapses makes traumatic memory more accessible, and facilitates the connection between emotional memory and episodic memory, thus promoting a shift of memory to associative and neocortical areas.”

Essentially, the bilateral movements used in EMDR rapidly allows us to process stuck traumatic memories as we would normally do with less traumatic memories during sleep.

They have a great picture of an EEG tracing that show how the bilateral movements mimic slow-wave sleep. Click to see it in the original article.

EEG tracing upon eye movements during an eye movement desensitization and reprocessing (EMDR) session. Note the slow-wave sleep (SWS)-like frequency from the beginning to the end of bilateral stimulation.

A Glimpse at the Future

EMDR bilateral stimulation (moving your eyes side to side) mimics slow-wave sleep, calming the amygdala and allowing it to synchronise with the rest of the brain. Thus allowing your brain to process a traumatic memory. What we do in therapy (move your eyes side to side), is what you do every night when you dream.

Remember, curiosity keeps us learning, so delve into the original article if you’re intrigued. Stay open to new revelations.

Stay curious, always.

I look forward to hearing from you.

Kind regards,

Desne Doman EMDR therapy Sydney

Desne Doman

Clinical Psychologist MAPS

EMDR Accredited Practitioner.

References:

Keywords: EMDR, mechanism of action, eye movements, sleep, slow-wave sleep, REM, orienting response, working memory

Pagani M, Amann BL, Landin-Romero R and Carletto S (2017) Eye Movement Desensitization and Reprocessing and Slow Wave Sleep: A Putative Mechanism of Action. Front. Psychol. 8:1935. doi: 10.3389/fpsyg.2017.01935

Pagani, M., Di Lorenzo, G., Verardo, A. R., Nicolais, G., Monaco, L., Lauretti, G., et al. (2012). Neurobiological correlates of EMDR monitoring – An EEG study. PLOS ONE 7:e45753. doi: 10.1371/journal.pone.0045753

What happens during EMDR sessions?

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Your first session is history taking and assessing your readiness as well as demonstrating what EMDR feels like. The second session will involve selecting targets (distressing memories and related incidents). You will also be taught skills to help regulate distress during sessions. The aim is to produce rapid and effective change whilst you maintain as much emotional equilibrium as possible.

The processing phase (session 3 or 4) begins by getting you to focus on the most distressing image associated with the traumatic experience, plus the emotions accompanying the image, body sensations (tight throat, increased heart rate), and an associated negative belief about yourself (e.g., ‘I could not save him’ or ‘I’m unlovable.’). There is no need to describe the memory in detail, and you can focus on those aspects of the memory without having to say them out loud. I (the therapist) do not need to know the detail, which is advantageous if some of your memories make you feel shameful or guilty.

Whilst holding in mind the most distressing image/emotion/body sensation/cognition, and not speaking, you will track a moving object across your visual field, for 10 to 40 seconds. (Other, non-visual options are alternating sounds or tapping sensations.)

There is nothing for you to ‘do’ or get ‘right’.  Basically, we trust your mind and brain to go where they need to go to allow unprocessed traumatic memories to be processed. I will only intervene if your emotions become overwhelming.

After each set of eye movements, you are asked, ‘What are you noticing?’ (which is briefly reported, although you may choose not to say anything), you will be directed to ‘notice that’ for another set of eye movements (whilst not talking), after which you are again asked, ‘what do you notice?’ This basic, repeated sequence is the core of an EMDR session.

If your memories go forward or backwards in time, to earlier or later parts of the traumatic event, or even to completely different past of future events, it is accepted as normal. There is nothing to get wrong or right, just to trust a proven process with an experienced trained EMDR professional.

Near the end of a processing phase, distressing images are recalled to see if they still have a significant ‘emotional punch’ together with disturbing body sensations. If they are no longer distressing a new positive belief is installed.

Instructions are given to deal with any dreams, thoughts, etc. and the session is closed.

EMDR therapy in Sydney

I am Clinical Psychologist an Accredited EMDR therapist in Crows Nest, Sydney.

Please call me on 9908 2950 to make an appointment or email me

EMDR therapy in Sydney

I am located at:

Centre for Clinical Therapy

119 Willoughby Rd, Crows Nest, Sydney

To contact me and find out more EMDR therapy Sydney

Kind regards,

Desne Doman

Clinical Psychologist MAPS

Medicare Rebates Available (with a current GP Mental Health Plan)