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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.

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Modern humans are masters of multitasking.

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We eat while driving, watch TV while studying, and of course talk on our cell phones while doing, well, everything.

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How do we do it?

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A study in the July 16th issue of Neuron suggests that though we can train our brains to work faster as we juggle,

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we never actually manage to do more than one thing at a time.

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Our brains aren't really built to handle the sort of parallel processing we think we're capable of.

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The good news is: studies have shown that extensive training can make us better at doing two things at once.

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But how?

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One theory is that with lots of practice some routines become "automatic."

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And if we don't need to run every little thing past the part of the brain that's spends time thinking about stuff, we can multitask just fine.

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But this new study finds that that's not the way it works.

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Turns out that multitaskers still consult the prefrontal cortex, but training gets the "Thinking Brain" to think a little faster.

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So we're switching tasks quickly enough to appear to be doing them simultaneously.

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Which is still nothing to shake a stick and sneeze at.

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Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.

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