WHY THE BRAIN REMEMBER DREAMS?
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Some people remember a dream every morning, while others seldom resemble one. A team led by Perrine Ruby, Lyon Neuroscience Research Center, studied the brain activity of these two types of dreamers to understand the differences between them. In a study published in the journal Neuropsychopharmacology, researchers have shown that the temporo-parietal junction , a center for information processing in the brain is more active in those who remember the dreams . This increase in activity in this brain region may facilitate attention to external stimuli and to promote dream recall.
The reason why we dream is still a mystery to researchers studying the difference between those who remember many dreams regularly and who rarely remembers dreams . In January 2013, the team led by Perrine Ruby , a researcher at the Lyon Neuroscience Research Center, made the following two observations: "Those who remember many dreams have twice the time of waking during sleep and his brain is more responsive to auditory stimuli during sleep and waking. This greater responsiveness of the brain can promote awakenings during the night, and can therefore facilitate the memorization of dreams during short periods of wakefulness "
In this new study , the research team sought to identify which areas of the brain differ in many and few who remembers dreams. They used Positron Emission Tomography (PET ) to measure the spontaneous brain activity of 41 volunteers during wakefulness and sleep. The volunteers were divided into 2 groups : 21 able to remember many dreams (5,2 mornings a week on average) and 20 who reported two dreams per month on average. Who remembers many dreams , both during wakefulness and during sleep, brain activity showed strong medial prefrontal cortex and temporo-parietal junction , an area of the brain involved in directing attention towards external stimuli .
The originality of the results of the French team is to show the differences in brain activity between many and few who remembers dreams during sleep and while awake. "Our results suggest that many of those who remember a few dreams and differs in the activities of storage , but do not exclude that differ in the production of dreams. Indeed, it is possible that those who remember many dreams to produce a greater amount of dreams of those who remember a few , "concludes the research team .
Source Worldhealth
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