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By applying electrical current to the brain, researchers reporting online on November 4 in Current Biology, have shown that they could enhance a person's mathematical performance for up to 6 months without influencing their other cognitive functions. The findings may lead to treatments for the estimated 20 percent of the population with moderate to severe numerical disabilities (for example, dyscalculia) and for those who lose their skill with numbers as a result of stroke or degenerative disease, according to the researchers.
"I am certainly not advising people to go around giving themselves electric shocks, but we are extremely excited by the potential of our findings," said Roi Cohen Kadosh of the University of Oxford. "We've shown before that we can temporarily induce dyscalculia [with another method of brain stimulation], and now it seems we might also be able to make someone better at maths. Electrical stimulation will most likely not turn you into Albert Einstein, but if we're successful, it might be able to help some people to cope better with maths."
The researchers used a method of brain stimulation known as transcranial direct current stimulation (TDCS). TDCS is a noninvasive technique in which a weak current is applied to the brain constantly over time to enhance or reduce the activity of neurons. The technique has gotten attention in the last decade for its potential to improve various functions in people with neurological deficits, for instance in those who have suffered a stroke.
In the new study, the researchers applied TDCS specifically to the parietal lobe, a portion of the brain that is crucial for numerical understanding. The study participants had normal mathematical abilities but were asked to learn a series of artificial numbers -- symbols that they had never seen before that they were told represented numbers -- while they received the noninvasive brain stimulation. The researchers then tested participants' ability to automatically process the relationship of those artificial numbers to one another and to map them correctly in space using standard testing methods for numerical competence.
The results of the tests showed that the brain stimulation improved study participants' ability to learn the new numbers. and that those improvements lasted 6 months post training.
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EVE-TEASING is a rampant social evil. It is all pervasive — in beaches, roads, cinema halls, buses and sadly even in educational institutions. Women have landed on the moon; reached for the stars and touched them. They have proved themselves equal to men in every way. Yet every 51 minutes a woman is sexually harassed.
It’s a frequent practice during crowded festivals or on crowded public transport systems, for men to poke, prod, pinch, grab at any body part and otherwise physically harass women. It’s time women stood up and said: “Do not look at me like than or else I will hit back. Do you let men brush past you . Why do you ignore them when they say “kya maal hai”? Do you just move on without retaliating if they put their hand up your skirt in a crowded bus.
Eve-teasing is not a victimless crime as it appears on paper. It has resulted in deaths, and when it goes unchecked could lead to public humiliation of women even in broad daylight. Schools and colleges could easily discipline students for such activities on the campus, but this only induces them to indulge in such acts outside the campus. Eve-teasing is not just a college girl’s problem, it leads to insecurity for parents and other loved ones.
If we take example of Aarushi, she was also a victim of eve-teasing and this time the media and police made her a victim of eve-teasing. The media and the police claimed that Aarushi’s e-mail and chatting details show that she was a very ’open- minded’ girl and questioned her character. Her physical relations with the middle-aged servant, Hemraj, were also questioned.
They do not know what the truth is? Then how can we question Aarushi’s character? She is dead so it is our duty that we give her justice. The police and media have the responsibly to stop evils like eve-teasing but now they are becoming part of it. So please stop this eve-teasing.
September 27th 2010 14:34
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on The first generation Robonaut set to make space debut
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