Strange thread title i know but i have a question. I i'm senior in high school, and i im taking psychology for one of my classes. We are currently on the section covering how the brain works and stuff along those lines. We watched a few movies over people who have had a operation to fix epilepsy. One operation used electrodes to stimulate parts of the brain to help map out the person's brain. My question is how many volts, and amps are used to do this? My teacher didn't know, and said i could get some extra credit for finding out. So, if any one knows for sure, please tell me. Thanks.