Small Direct Current Boosts Brain Function

A recent study conducted at Oxford University on the use of transcranial direct current stimulation (tDCS) to improve math skills is getting considerable attention.  A small group of college students received  a tiny direct current to the parietal lobe for 20 minutes per day for six days. They showed a significant improvement in numerical ability (representation of artificial numeric symbols) that persisted for as long as six months.

I have seen other studies that claim tDCS can improve creativity, declarative memory, visual memory, motor skills and pain relief as well as speed stroke recovery.

I am not aware of any devices and training protocols available to the general public. Interested to hear from readers that use tDCS.