Electrical brain stimulation improves math skills

Nov 04, 2010
Electrical brain stimulation improves math skills
A volunteer wearing the electric stimulation equipment

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. 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 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 .

In the new study, the researchers applied TDCS specifically to the , 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 improved study participants' ability to learn the new numbers. and that those improvements lasted 6 months post training.

Now that they know the TDCS treatment can improve number processing in people with normal mathematical ability, the researchers plan to test its use in those with severe numerical disabilities. If it works, that could have important consequences, Cohen Kadosh said, as people with severe numerical disabilities often cannot manage basic tasks like understanding food labels or counting change in a supermarket. Poor numerical ability has also been linked to unemployment and low income, depression, low self-esteem, and other problems, he said.

Explore further: Premature aging: Scientists identify and correct defects in diseased cells

More information: The paper ‘Modulating neuronal activity produces specific and long lasting changes in numerical competence’ by Roi Cohen Kadosh and colleagues is published in Current Biology on 4 November 2010.

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User comments : 6

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5 / 5 (1) Nov 04, 2010
I've got a big math test coming up I need to charge my brain again.
3 / 5 (2) Nov 04, 2010
haha.. yep.. working at a school seeing how many parents medicate their kids nowadays, i wouldnt be surprised if they find a way to name low math scores a 'condition' and have their kids go in for a quick brain zap every 6 months..
2 / 5 (2) Nov 04, 2010
The Krell had a machine like this a long time ago: http://www.youtub...kfKySHuA ... but it destroyed them.
2.6 / 5 (5) Nov 04, 2010
quick! lick your fingers and stick'em into power outlets everybody!

maybe this is a ploy to get rid of idiots on the planet.
3.7 / 5 (3) Nov 05, 2010
There are so many stupid people that it is beginning to look a lot like the movie, "IDIOCRACY". No amount of electrical stimulation would help their math score.
1.6 / 5 (7) Nov 05, 2010
This effect is known for long time from electrotherapy.It's usually followed with certain lost of long-therm memory. It seems, it just makes brain more permeable for synthesing of new ideas by deleting of perceptions like sneding of trees. Tic-for-tat, you know that.


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