As children, we all probably experienced what we would call nightmares at some point, perhaps about the boogie man or some other monster that lived under our bed or in the closet.
When I was a child, I often had bad dreams and I found myself in bed at night repeating to myself in my head the mantra “I’m going to have a dream”. Now as a qualified hypnotherapist, I can see that what I was doing was very solution focused and I was in fact performing self-hypnosis! By focusing on what I wanted, rather than what I didn’t want, meant that I didn’t get anxious about going to bed and having bad dreams and so found it easier to get off to sleep, but it also seemed to reduce the frequency of them.
Now these nightmares that we experience as children are different to those experienced by someone who has been through a trauma such as war veterans or rape victims, but either way the same techniques can be used to help change how these bad dreams affect us in our waking life and also reduce the severity and frequency of them.
We make use of the REM (Rapid Eye Movement) stage of sleep, where we commonly have dreams and/or nightmares, to process our day and other unresolved issues. "We take our problems to sleep and we work through them during the night," says Rosalind Cartwright, Professor of Neuroscience at Rush University Medical Center. Our worries and concerns are processed and moved from the primitive part of the brain, where they are an emotional memory, to the intellectual part of the brain where they become a narrative memory. What this means is that the emotion has been stripped from the memory and you have a better control over it – you can think about it when you want to rather than it randomly popping up in your head when you don’t want it to. You can still recall that it wasn’t a pleasant experience but it no longer triggers the same emotional response as it once did and you are able to rationalise what happened. But nightmares interrupt this process. Often, nightmares will wake us up before the emotion or issue is resolved, so it remains in the primitive part of the brain and causes the nightmare to repeat again in the future, which may explain why we have recurring dreams.
When we have a high level of stress hormones in the brain, the hippocampus, which is responsible for memories among other things, cannot perform its job as well as it should and cannot process the memories and unresolved issues effectively, causing nightmares and also flashbacks in those who have suffered a trauma. Because these memories and other issues have not been processed properly, they do not go away and continue to be a source of anxiety and stress. Guided visualisation not only helps to reframe these nightmares and flashbacks but helps to reduce your anxiety and stress levels and gets the brain producing serotonin more effectively boosting your mood. Once your anxiety and stress levels have been reduced, the brain can start to process the memories and the flashbacks and nightmares will disappear.
Dr Shelby Freedman Harris, director of the Behavioral Sleep Medicine Program at Montefiore Medical Center uses guided visualisation with her patients to assist with their debilitating nightmares. Patients use guided visualisation to transform their nightmare into a more positive context and have it become a different dream. By training the mind during the day using guided visualisation, the nightmare becomes less debilitating for them. One of Dr. Harris’ patients had recurring nightmares of being surrounded by sharks and she reframed the nightmare by imagining they were dolphins instead. Another patient who had nightmares of being chased reframed the pursuer into chocolate and ate him. The latter example just shows that what you visualise doesn’t have to be in the realms of reality – be creative; making it as entertaining and funny as you like.
We can often feel out of control when suffering from regular nightmares, but using this technique helps give you control over your nightmares rather than them having control over you.
A similar guided visualisation was used in a study of 168 women who had been the victims of rape and were experiencing recurring nightmares.(1) The study showed that the women who had used guided visualisation, or Imagery-Rehearsal Therapy (IMR), to reframe their nightmares, had fewer nightmares and of less intensity compared to the control group. The study concluded that “Imagery Rehearsal Therapy is a brief, well-tolerated treatment that appears to decrease chronic nightmares, improve sleep quality, and decrease PTSD symptom severity.”
Guided Visualisation has also been successfully used with children with night terrors and war veterans from Iraq and Afghanistan, to help reduce nightmares.
I use guided visualisation with my hypnotherapy clients to reduce their stress and anxiety levels, help them to focus on how they want things to be, and help put them back in control of their thoughts, feelings and behaviours.
REM sleep, the stage of sleep in which we commonly dream, has been found to help ease painful memories and you can read more about this in a previous blog post – REM Sleep Helps Process Negative Thoughts and Memories
Find out more about how hypnotherapy can help Post Traumatic Stress Disorder (PTSD)
Find out more about how hypnotherapy can help with Insomnia
References:
(1) Krakow B, Hollifield M, Johnston L, et al. Imagery rehearsal therapy for chronic nightmares in sexual assault survivors with posttraumatic stress disorder a randomized controlled trial. JAMA. 2001;286(5):537-545.
Bristol-based Hypnotherapist discusses all things hypnosis and hypnotherapy
Showing posts with label PTSD. Show all posts
Showing posts with label PTSD. Show all posts
Monday, 25 June 2012
Sunday, 27 November 2011
REM Sleep Helps Process Negative Thoughts and Memories

If you are a fan of Harry Potter, you might recall the ‘pensieve’ that Dumbledore uses. When he has too many thoughts and memories in his head, he siphons the excess thoughts into the basin using his wand. He says that "it becomes easier to spot patterns and links" in the memories when they're collected in the “pensieve”. In reality, REM sleep, or Rapid Eye Movement, is our equivalent of this “pensieve”.
At night, we enter in to REM sleep; the stage of sleep where we dream. During this stage of sleep, we re-run the events of our day and anything that might be in our stress buckets, either in clear exactly as it happened or metaphorically. These thoughts are then moved from the primitive part of the brain, where they are an emotional memory, to the intellectual part of the brain where they become a narrative memory. What this means is that the emotion has been stripped from the memory and you have a better control over it – you can think about it when you want to rather than it randomly popping up in your head when you don’t want it to. You can still recall that is wasn’t a pleasant experience but it no longer triggers the same emotional response as it once did and you are able to rationalise what happened.
I am sure that you are already familiar with how REM works, even without realising. Let’s say someone says something to you at work that upsets you. You go to bed that night and during your REM sleep your brain enters in to the process of emptying your stress bucket, changing those memories from emotional to narrative. So when you awaken in the morning, you may well have forgotten about what the person said, or you might not but you will definitely have more perspective on the event and be able to see the bigger picture, like with the “pensieve”.
Recently, BBC News Health reported that dreaming ‘eases painful memories’. Using MRI scans, Scientists were able to shed more light on how the brain deals with the memory of traumatic events and other negative, unpleasant experiences. The research carried out at The University of California showed that after a period of REM sleep, there was less activity in the areas of the brain linked to emotion (the amygdala) but instead, the part of the brain linked to rational thought (the prefrontal cortex) was more active.
In addition to emptying our stress bucket, during REM sleep there is a decrease in the neurotransmitter norepinephrine, a chemical transmitted by the brain associated with stress.
So as you can see, REM sleep is pivotal at helping to keep our stress levels down and emptying out those thoughts and memories which are no longer useful for us anymore. It is also of great advantage to those suffering with Post Traumatic Stress Disorder (PTSD).
When our stress buckets are full to capacity or even overflowing, it makes sense that our brain would want to partake in more REM sleep to empty it. Unfortunately, this is not possible as the REM stage of sleep is restricted to approximately 20% of our sleeping patterns. So if our stress bucket is full, we never completely empty our buckets during our sleep and wake up still feeling stressed and affected by those unprocessed memories.
But there is good news! Hypnotherapy mimics REM sleep, helping to trigger a reduction in stress hormones and allowing your brain to process those painful memories and empty that stress bucket. Another great advantage of the hypnosis-induced REM state is that it doesn’t eat in to the 20% REM allowance of your sleep pattern – so you can go for a hypnotherapy session, listen to a hypnosis CD before you go to bed then still have your full 20% allowance of REM sleep, helping to process all those negative memories and thoughts and empty your stress bucket quickly and effectively.
Read the BBC News Health article Dreaming ‘eases painful memories’
Read The University of California Berkeley article Dream sleep takes sting out of painful memories
Read more about what Hypnotherapy is and what to expect from a hypnotherapy session
Read more on how hypnotherapy can help Post Traumatic Stress Disorder (PTSD)
Labels:
Memories,
Negative Thoughts,
Post Traumatic Stress Disorder,
PTSD,
REM Sleep,
Sleep,
Stress
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