Been meaning to post this one, for quite some time. Just remembered it...so here it is:
An FYI, not a recommendation. But I do have a nerve stimulation kit that I could re-apply to this...did curiosity fry the cat's noggin?
"Transcranial direct current stimulation works, and you can try it at home.
It turns out that one of the ways you can speed up a microprocessor -- shoving more current into it -- also works on the human brain. The technique is called transcranial direct current stimulation, and while bioethicists are debating whether or not it's ethical to use it to enhance learning in children, hobbyists have figured out how to try it out at home. Think of it as the new Adderall -- without, apparently, the side effects."