Thursday, August 18, 2011

Molecular forces win the degeneration of nerve


An amazing coincidence - almost at the same time, there are two independent studies that offer new and effective methods of "molecular wars" against the damaging nerve diseases. In the center of attention of specialists in both cases proved to be axons, which are usually the first victim of the disease.

Who found a molecule that plays a key role in the successful operation of axonal transport , movement through the nerve appendage of different biological material. It is essential to preserve the life of nerve cells, and even more so, professionals can now take a fresh look at the factors leading to such disorders of the nervous system, as, for example, multiple sclerosis.

We explain the characteristic feature of neurodegenerative diseases - the loss of viable neurons, which, as experience shows, often preceded by degeneration of axons. Their destruction was detected repeatedly in many disorders of this type, but until now the phenomenon itself has not been studied in detail.

Degenerated neurons after the injections made by the scientists began to grow and returned to normal. Axonal transport provides uninterrupted traffic of thousands of biochemical compounds essential for the survival of the axons themselves and the success of our one hundred billion nerve cells.

Wednesday, August 17, 2011

Beautiful people - selfish?


Energy-saving lamps are dangerous to your health!

Scientists found that ultraviolet radiation of energy saving lamps can cause skin irritation if placed to the light source too close. According to medical experts, problems can arise if a long stay at a distance of less than 30 cm away from some of these lamps. The level of UV radiation produced by such sources of light, comparable to the influence of the sun on a clear day.

However, if the bulb itself is somewhat closed, this problem does not arise. The doctors add that these lights do not increase cancer risk. The reason for attention to technical innovation are complaints of people with sensitive skin to light. In reporting on the troubled light bulbs did not mention any specific manufacturer.

Factories and regulators to develop more stringent rules of production and use of such products. Experts say that the risk of using such lamps may be people who have problems with excessive sensitivity of the skin. For those who are healthy, they do not pose danger. To eliminate the possibility of problems, experts recommend using screens to absorb ultraviolet radiation.

Ultrasound window allowed scientists to peer into the brain

In order to help people suffering from many years of heavy flows of epilepsy, it is necessary to conduct a diagnostic study of the brain. But do it without surgery is not easy. A scientist from the University of Arizona, offers his own method.

In the case of such disease patients require surgery to remove a section of tissue. To do this, set the exact position of the region of the brain, the source of a convulsive seizure.

Electroencephalography is not a good helper, because it provides a low resolution image, and the introduction of the electrodes, allowing up much more accurate maps of the brain, is always a risk of infection (and sometimes there are strange hallucinations ).

The effect is as follows: the phase and magnitude of the voltage passing through the skin, proportional to the pressure of ultrasound directed at a particular body part.

In practice, this means focusing on a small section of skull ultrasonic beam changes its physical properties. The result is a kind of "electric box" that allows you to look inward, to accurately measure the weak electric field, which normally do not go beyond the human skull.

And so there they can be caught using standard equipment such as EEG (electrodes placed on the head as a hat). Further built more accurate maps can be used to determine exactly what area you want to delete.

Tuesday, August 16, 2011

Scientists argue that work in a busy office impairs mental performance


Scientists have found that working life in the modern bustling office can cause shrinkage of the brain. The situation is aggravated by the current leaders of fashion combined offices, where workers are sitting a few sections that are separated from each other only by small partitions or even entirely without them. So employees can practice without departing from the place to resolve many issues.

The negative consequences of such practices lies in the fact that in the brains of a busy office staff initiated an unnecessary activity that distracts him from work. Neuroscientists cite as an example even divert calls to a neighbor. Not to mention the endless conversations, which hears employee. According to the observations of scientists, this leads to a decrease in the brain.

Much better state of mind turned to those employees whose offices are many pictures and colors. Experts explain that this is due to external stimuli. With regard to the health and well-being, then those employees who can fill the office space your things, these figures grow to 15%.

Monday, August 15, 2011

See everything, but not everyone remembers


Those who are not worried about insomnia, can not get lucky with dreams. The result is the same - weakness and fatigue in the morning. In the dream of the day is processed information, which we perceive not only consciously but also unconsciously. In addition, the brain receives signals from the internal organs.

And if the body is some problem, the information is distorted and can affect dreams, make them chaotic. Painful condition interferes with the brain to work on the solution of psychological problems, all in his power to fight for the internal processes.

What determines what you will see a dream? Scientists can not say for sure yet. But suppose that during the night is ordering information, deposit it in the long term or short-term memory. In addition, not having to digest the information for the day, the brain, while you relax, try to solve some psychological problems.

No wonder they say: sleep on it. The next morning many of the problems are removed, because the brain had a night to think about them until the consciousness does not prevent him his instructions.

Saturday, August 13, 2011

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