Why We Have Nightmares: Researchers reveal higher activity in the left side of the brain is the reason we have angry dreams – and it can lead to treatments for people who relive traumatic events in sleep
- Researchers took brain scans of participants who also described their dreams
- Attacking dreams was found in connection with an imbalance in frontal brain activity
- Repentance in both sleep and alertness can be caused by the same mechanism
- Results can pave the way to new treatments for nightmares in those with PTSD
The secret of why we have angry dreams can finally be found by scientists studying our brains when we sleep.
Experts found an imbalance between two regions of the brain that exist on both the left and right sides is to blame the troubling nightmares.
A control character is an effect called frontal alpha asymmetry, where a certain type of brain activity is higher in one side of the brain.
The findings come from studies of 17 healthy volunteers who had their brains scanned before, during and after sleep.
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After experiencing a five-minute ball of REM sleep, the researchers woke up sleeping participants and asked them to describe the dreams they had had and rate the feelings they had experienced in them. (Stock image)
Researchers from the UK, Finland and Sweden looked at how our brains regulate emotions such as anger and curiosity when we dream at night.
Study participants spent two nights in a sleep laboratory where researchers took electroencephalography (or EEG) recordings of their brain activity for short periods before, during and after sleep.
Among the volunteers were 7 men and 10 women, all of whom were healthy.
Experts found that participants who experienced less brain activity in their right front cortex instead of their left counter while awake and during REM sleep experienced more anger in their dreams.
"It has been found that expressing anger is related to relatively larger left [frontal activity] while controlling anger is related to relatively larger right frontal activity," says main author Pilleriin Sikka, a researcher at the University of Turku in Finland.
Repentance was experienced in 41 percent of dreams, interest in 88 percent of dreams.
& # 39; Participants experie nced more anger in dreams than during the evening's vigilance while the evening and morning anger ratings do not differ. "
The narrative's signs of bad dreams, say researchers, is a signature called frontal alpha asymmetry, reports researchers. comes from studies of 17 healthy volunteers (stock photo) _
Experts looked at signs of participants reaching rapid eye movement (REM) sleep.
This cycle of our sleep patterns is characterized by rapid eye movement, a faster pulse, faster breathing , body movement and more dreamy.
Researchers woke up participants after they had experienced a five minute ball of RE M sleep
Then they asked the sleepers to describe the dreams they had had and rate the feelings they had experienced within them.
From these dream reports, the experts noticed the emotional states of the participants' dreams – as "angry" or "interest".
The only other emotional dream state that had a significant association with frontal alpha asymmetry during REM sleep was a closely related to anger – mistrust or suspicion.
The results indicate that this pattern of brain activity is a good way to predict how people control their emotions.
Previous studies have linked frontal alpha asymmetry with both anger and general self-regulation during awakening.
The new results can help researchers understand and potentially mitigate emotional content in nightmares.
These can be a disturbing symptom of many many mental and sleep disorders, including post-traumatic stress disorder.
The complete results of the study were published in the journal JNeurosci.
What is an EEG and how does it work?
An electroencephalogram (EEG) is a recording of brain activity originally developed for clinical use.
During the test, small sensors are led into the scalp to pick up the electrical signals produced when brain cells send messages to each other.
In the medical field, EEG is normally performed by a well-trained specialist who is known as a clinical neurophysiologist.
These signals are recorded by a machine and analyzed by a medical professional to determine if they are unusual. 19659010] An EEG can be used to diagnose and monitor a number of conditions affecting the brain.
It may help identify the cause of certain symptoms, such as seizures or memory problems.
Recently, technology companies have used the technology to create interfaces for brain computers, sometimes called "mind-reading" devices.
This has led to the creation and design of a number of futuristic sounding gadgets.
These have varied from a machine that can decipher words from brainwaves without talking to a headband design that would allow computer users to open programs with thought in mind.