Most of the energy consumed by the brain spends unknown what

The brain takes much more energy than other organs. It takes about 20% of the energy consumed by the human body, although the size of the brain - only 2% of total body weight, according to Faktrum. Imaging shows how distributed and enhanced blood flow in different parts of the brain when it is functioning on a variety of tasks. Increased work of a site requires an increased supply of oxygen, and this increases the volume of local blood flow. Normally, an increase in total is 5-10% of normal.
It turns out that most of the energy consumed by the brain spends knows what. Maybe he always handles some coming from outside information, which is not realized person? Or the energy goes into some internal processes that do not depend on the outside world? found that the activity of the visual cortex in the blind from birth is not lower than the sighted.
According to one hypothesis, the brain is constantly in dynamic equilibrium, balancing between excitation and inhibition. Here it goes, and the lion's share of energy consumption - to maintain the system in working order, in constant readiness. According to another hypothesis, the brain is busy all the time prediction of the near future in view of past experience, which transforms large amounts of information. especially intrigued researchers that this mysterious brain activity is uneven, it has tides,
Istochink: www.nkj.ru

via factroom.ru