3:15:24 
2023-06-05 
446
A new study finds that the key to preventing nightmares is playing specific sounds in our ears through a wireless headband.
In experiments, playing the sound of a piano while sleeping reduced the risk of traumatic dreams for those with chronic nightmares.
More importantly, the sound of the piano was associated with positive thoughts during the day when the patients were awake.
After receiving this new treatment, the patients' nightmares decreased significantly and their positive dreams increased over time.
The study was led by experts at the University of Geneva and published in the journal Current Biology. "There is a relationship between the types of emotions we experience in dreams and our emotional well-being," said study author Lambros Perogamvros, in the Sleep Laboratory at Geneva University Hospitals. "Based on this observation, we had the idea that we could help people by manipulating the emotions in their dreams." We showed that we can reduce the number of very strong and emotionally negative dreams in patients who suffer from nightmares."
Nightmares are considered "clinically significant" when they occur frequently (more than one episode per week) and cause daytime fatigue, mood swings and anxiety.
Previous studies have found that up to 4% of adults experience nightmares at this clinically important level. One current form of therapy, known as experimental imaging therapy (IRT), trains affected people to rehearse positive versions of their most common nightmares.
The IRT asks the dreamers to change the negative story towards a more positive ending and to train the rewritten dream scenario throughout the day.
And while IRT has shown some effectiveness, some patients don't respond to this treatment, so the team decided to adapt IRT.
To test whether exposure to sound during sleep could enhance success, Perogamvros and colleagues recruited 36 patients, all receiving IRT.
Half of the group received IRT as usual, while the other half was asked to try this new form of therapy, which involved sound.
When the sound was played during sleep, it was more likely to reactivate a positive memory in dreams.
At the end of the experiment, the frequency of nightmares decreased in both groups, but more so in the group where the positive scenario was associated with the sound.
The researchers found that both groups experienced a decrease in nightmares per week.
But half who received the combination treatment had fewer nightmares immediately after the intervention, as well as three months later, and experienced an increase in positive dreams.
The researchers say this new combination therapy needs to be tried on larger scales and with different populations to see how well it works.
The findings open up potential new avenues for treating other disorders such as insomnia and other symptoms of post-traumatic stress, such as flashbacks and anxiety.
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