A telephone conversation excites the cerebral cortex. Free Technical Library News

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Telephone conversation excites the cerebral cortex

01.12.2006

Around two billion people in the world now regularly use cellular telephony, and by the end of 2006 an estimated 730 million units will be sold. But it is still unclear whether prolonged exposure to radio waves from an apparatus applied directly to the head does not harm the brain.

The new Italian study also does not allow us to answer this question, but provides interesting information for reflection. Fifteen young volunteers talked for 45 minutes on cell phones of one of the most common standards now - GSM-900. At the same time, their brain activity was monitored.

It turned out that in 12 of the experimental young men, the cells of the motor cortex of the brain in the place where the apparatus was applied became excited during the conversation and returned to normal only an hour after the end of the experiment. The motor cortex controls human muscle movements.

The experimenters do not say that the phenomenon they discovered is dangerous, but, in any case, experience proves that radio waves cause some kind of reaction in the brain. True, the researchers do not report what was discussed during the conversations. After all, there are topics that by themselves, without radio waves, very excite the cerebral cortex.

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