Monday, January 4, 2016

The brain functional connectome is robustly altered by lack of sleep

What is your doctors sleep protocol? Does use of a sleeping pill constitute 'real' sleep? I was completely exhausted every day while in the hospital. I never got enough sleep. I had these fucking vampires drawing blood every morning from someone in the 4 plex at 7am. Who is most important? The workers at the hospital or the patients? This likely requires a call to the president. For your best recovery your doctor should know exactly how many hours of sleep you require.
http://www.ncbi.nlm.nih.gov/pubmed/26712339

Abstract

Sleep is a universal phenomenon necessary for maintaining homeostasis and function across a range of organs. Lack of sleep has severe health-related consequences affecting whole-body functioning, yet no other organ is as severely affected as the brain. The neurophysiological mechanisms underlying these deficits are poorly understood. Here, we characterize the dynamic changes in brain connectivity profiles inflicted by sleep deprivation and how they deviate from regular daily variability. To this end, we obtained functional magnetic resonance imaging data from 60 young, adult male participants, scanned in the morning and evening of the same day and again the following morning. 41 participants underwent total sleep deprivation before the third scan, whereas the remainder had another night of regular sleep. Sleep deprivation strongly altered the connectivity of several resting-state networks, including dorsal attention, default mode, and hippocampal networks. Multivariate classification based on connectivity profiles predicted deprivation state with high accuracy, corroborating the robustness of the findings on an individual level. Finally, correlation analysis suggested that morning-to-evening connectivity changes were reverted by sleep (control group)-a pattern which did not occur after deprivation. We conclude that both, a day of waking and a night of sleep deprivation dynamically alter the brain functional connectome.

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