Electric Jolt to Brain Boosts Math Skills

In case you're interested, here are other reports of the same story:

http://news.ycombinator.com/item?id=1869772

http://news.ycombinator.com/item?id=1870798

http://news.ycombinator.com/item?id=1871276

http://news.ycombinator.com/item?id=1872308

http://news.ycombinator.com/item?id=1875650

http://news.ycombinator.com/item?id=1876231

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