Math in the Media - Shock Therapy as a study technique??

Just ran across this report:

Electric brain stimulation can improve math skills

Read the article. An Oxford study has found that low levels of electrical stimulation of the brain (read: shock therapy?!!?) can improve math assessment skills. And these skills last for at least for a long time (at least half a year??).

I can already see the ill-advised do-it-yourself home implementations of this kind of study technique. Geez....

I can already see this giving other study aids a run for their money, no?