Monday, April 9, 2012

Also Brain Can Sleep While just a moment


The brain is the only human organ that is always active alias never sleeps. But a recent study found the brain is also able to sleep even if only for a moment. So who says the brain never sleeps?


Evidence of brain never sleeps example is when the mind is confused or can not remember anything. Experts say it could be the result of the presence of small parts of the brain that is 'asleep' for a moment to recharge or recharge.


Researchers claim that as a condition which causes the feeling of half-sleep and forgetfulness are also small mistakes made by humans, such as forgetting to put a key or put the cereal in the fridge.



The team from the University of Wisconsin measure electrical waves in the brain, it was found that nerve cells in some people who exhausted for a while will not awake or be 'offline'.


"We know when sleepy, we make a mistake and decreased alertness. This is because these groups of neurons may have fallen asleep so as to produce negative consequences on performance," said Professor Chiara Cirelli, psychiatrist and author of the study, as quoted by the Telegraph.


Prof Cirelli said that before a person feel tired already there are signs in the brain that requires a person to stop doing activities that require alertness.


In the examination through the EEG (electroencephalograms) long known that when a person is awake, he could experience short periods of 'micro sleep'. This condition is often regarded as the most likely cause people to fall asleep while driving.


Prior to the 'micro sleep' some brain cells have demonstrated the activity of local asleep or entering a period of sleep, making a mistake.


"This activity occurs in some cells, for example from 20 cells that we monitored in one experiment there are 18 cells that remain intact while the other two have signs of a brief sleep," said Prof Cirelli.


The results of this study are reported in the journal Nature stating that the neurons affected by local sleep in the motor cortex, the brain region that governs the plan, implement and control the movement

No comments:

Post a Comment