Washington: A sleepless night can not only make us cranky and moody but also trigger euphoria, potentially leading to poor judgment and addictive behaviour.Researchers at the University of California and Harvard Medical School studied the brains of healthy young adults and found that their pleasure circuitry got a big boost after a missed night`s sleep.
The body alternates between two main phases of sleep during the night -- Rapid Eye Movement (REM), when body and brain activity promote dreams, and Non-Rapid Eye Movement (NREM), when the muscles and brain rest. Previous brain studies indicate that these sleep patterns are disrupted in people with mood disorders.IANS
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