Does passing a small current through your brain really make you smarter?

http://singularityhub.com/2013/01/14/does-passing-a-small-current-through-your-brain-really-make-you-smarter/ / smarter solve difficult puzzles learn piano half the time little shock scientists passing small current through the brain increases aptitude strap on headgear mediocrity zapped from your brain miracle boost transcranial direct current stimulation tDCS) stimulation steady current 2 milli-amps same as a 9-volt battery – delivered electrodes worn head arm mild electric current depolarize neurons cerebral cortex more receptive to new input brain primed learn more easily control group magnetic field baseline enhanced enhances training performed better threat identification altered state of awareness time passed unduly fast faster lead scientist of study Michael Weisend New Scientist feel more focused calm performance previous studies similar results improved working memory improved language learning parietal cortex brain visual information flows enhanced visual short-term memory brain imaging brain magnetic field changes response sensory stimulation sound touch light magnetoencelography MEG amplitudes six times greater baseline amplitudes anatomical changes diffusion tensor imaging DTI scans white matter fiber tracts changes in brain structure structural changes in the white matter /