Only 6 hours sleep changes gene functioning

Sleep researchers held a trail where they gave 26 people up to 10 hours sleep each night for a week and compared the evidence with results after using the same people with only 6 hours of sleep and recorded results.

After analysing blood from the 26 people researchers from the University of Surrey found that there were changes to almost 700 genes which interfered with protein production in the body, changing its chemistry.

Sleep deprivation also causes panic attacks

Researchers from the Sleep and Neuroimaging Laboratory at the University of California, Berkeley, used brain scanning on 18 healthy adults in two separate sessions, one after a normal night’s sleep and a second after a night of sleep deprivation. During both sessions, participants were exposed to an emotional task that involved a period of anticipating a potentially negative experience (an unpleasant visual image) or a potentially benign experience (a neutral visual image).

The fMRI scans showed that sleep deprivation significantly amplified the build-up of anticipatory activity in deep emotional brain centers, especially the amygdala, a part of the brain associated with responding to negative and unpleasant experiences. In some of these emotional centres of the brain, sleep deprivation detrimentally triggered an increase in anticipatory reaction by more than 60 percent.

In addition, the researchers found that the strength of this sleep deprivation effect was related to how naturally anxious the participants were. Those people who were more anxious showed the greatest vulnerability to the aggravating effects of sleep deprivation. The results suggest that anxiety may significantly elevate the emotional dysfunction and risk associated with insufficient sleep.

sourced from BBC news & pan

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