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We Transition Between 19 Different Brain Phases When Sleeping, Study Finds - Slashdot

Science_64
A new study suggests that instead of the traditional four sleep stages we generally understand the brain moves through, there are in fact at least 19 different identifiable brain patterns transitioned through while sleeping. New Atlas reports: Traditionally scientists have identified four distinct stages our brain transitions through in a general sleep cycle -- three non-REM sleep phases (N1-3) that culminate in an REM phase. The four stages have been classically determined and delineated using electroencephalographic (EEG) brainwave recordings. The new research set out to more comprehensively record whole-brain activity in a number of subjects by using functional magnetic resonance imaging (fMRI). The study began by studying 57 healthy subjects in an fMRI scanner. Each subject was asked to lie in the scanner for 52 minutes with their eyes closed. At the same time, each subject was tracked using an EEG. This allowed the researchers to compare traditional brainwave sleep...(continued)
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