a tecnologia te distrai? a saída é mais tecnologia

08/05/2009

http://www.nytimes.com/2009/05/05/science/05tier.html

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Ear Plugs to Lasers: The Science of Concentration

By JOHN TIERNEY

Imagine that you have ditched your laptop and turned off your smartphone. You are beyond the reach of YouTube, Facebook, e-mail, text messages. You are in a Twitter-free zone, sitting in a taxicab with a copy of “Rapt,” a guide by Winifred Gallagher to the science of paying attention (…)

Now that neuroscientists have identified the brain’s synchronizing mechanism, they’ve started work on therapies to strengthen attention. In the current issue of Nature, researchers from M.I.T., Penn and Stanford report that they directly induced gamma waves in mice by shining pulses of laser light through tiny optical fibers onto genetically engineered neurons. In the current issue of Neuron, Dr. Desimone and colleagues report progress in using this “optogenetic” technique in monkeys.

Ultimately, Dr. Desimone said, it may be possible to improve your attention by using pulses of light to directly synchronize your neurons, a form of direct therapy that could help people with schizophrenia and attention-deficit problems (and might have fewer side effects than drugs). If it could be done with low-wavelength light that penetrates the skull, you could simply put on (or take off) a tiny wirelessly controlled device that would be a bit like a hearing aid.

In the nearer future, neuroscientists might also help you focus by observing your brain activity and providing biofeedback as you practice strengthening your concentration. Researchers have already observed higher levels of synchrony in the brains of people who regularly meditate.

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