Non-rapid eye movement sleep 3D maze. Participants were then trained in the maze for 4 hours and later, during the various sleep cycles of nonREM sleep, REM sleep and wakefulness, they were scanned twelve times using a PET scan during the night. The PET scan demonstrated a higher blood flow in the hippocampus during SWS/non-REM sleep due to the training from the previous day while the control group exhibited no increased blood flow and they had not received the training the prior day. The brain activity during sleep, according to this study, would show the events of the previous day do make a difference.
Dementia with Lewy bodies planning and organizing. Deficits can present with impaired job performance, difficulty multitasking, inability to follow conversations or problems driving a car—such as misjudging distances or becoming lost. A person with DLB may experience problems of wakefulness or sleep disorders including daytime sleepiness, drowsiness or napping more than two hours a day, insomnia, and restless legs syndrome. REM sleep behavior disorder is a parasomnia in which individuals with RBD lose the paralysis of muscles (atonia) that is normal during rapid eye movement (REM) sleep, and act out their dreams or have other abnormal movements or vocalizations. About 80% of people with