in the meantime, edie guyton is thankful for her new life.g about 1/1000 of the power that a flashlight bulb uses. do you feel any electricity or anything? >> i don't feel anything in my head at all. >> did you go off medication when you were pregnant? >> reporter: she's active with a mental health advocacy and support group. and she recently traveled to italy with old friends from college. >> and that smile is real. i was okay. >> reporter: it's only been an issue once. >> at the airport, i just go -- and i say -- and they say, "pacemaker question. and i said yes. one time, i said actually it's brain electrodes. i'll never do that again. the woman who was patting me down like she was afraid i would explode. >> boy, you got to love airport security. a couple of final points. dr. mayberg and another doctor hold the patent on the procedure. this is still experimental. and fda approval to make it widely available is at least several years away. >>> that's it for tonight's show. i'm drew griffin. >> and i'm randi kaye. >> and i'm randi kaye. than

it was a procedure just like this done on edi guyton. in surgery, patients are lightly sedated as a neurosurgeon drills two holes. with an instrument to guide him, he then inserts the electrodes. >> is the contact on? >> contact on. >> as a benchmark, they asked edi to rate her feelings on a scale of 1 to 10, starting with dread. >> my sense of dread is getting worse. >> rate it. >> 8. >> two minutes later, they turned on one of the four contacts. >> how does it feel right now? is it still high? >> no, it's much better. >> what is the dread right now? >> 3. >> a drop from 8 to 3. but doctors would soon get an even better result. >> we'll make some changes. up until this time, edi could not connect emotionally not even with her grandniece, susan. >> somebody handed her to me, i held her but i was going through the motions and i felt really nothing. >> nothing. >> nothing. nothing. >> that changed in the operating room. >> stim on. >> when they tried contact number two. >> let me know if anything changes, give a shout. >> i just almost smi

in the meantime, edie guyton is thankful for her new life.ring about 1/1000 of the power that a flashlight bulb uses. do you feel any electricity or anything? >> i don't feel anything in my head at all. did you go off medication when you were pregnant? >> reporter: she's active with a mental health advocacy and support group. and she recently traveled to italy with old friends from college. >> and that smile is real. i was okay. >> reporter: it's only been an issue once. >> at the airport, i just go -- and i say -- and they say, pacemaker, and i say yes. one time, i said actually it's brain electrodes. i'll never do that again. the woman who was patting me down, she was afraid i would explode. >> boy, you got to love airport security. a couplef

mayberg continues her research to unlock the secrets of area 25, it's been five good years for edi guyton. >> aww. >> if you hadn't had the operation where would you be right now? >> i really believe that i would have committed suicide. >> edi's transformation is so dramatic. for now as you might guess the procedure is still experimental, two medical device companies that are conducting larger studies, have the hope of winning fda approval, but that is several years away. >>> much more of this reporting on battery powered brains, sunday night, cnn presents 8:00 and 11 clock eastern. >>> stephanie joins me to funny piece for our website that is called an optimist journey toward dropping the d-bomb. can you be an optimist and depressed at the same time? the answer is yes, you won't look at your friend, co-workers, family the same way after this. we'll talk about it, that's next. [ male announcer ] this is coach parker... whose non-stop day starts with back pain... and a choice. take advil now and maybe up to four in a day. or choose aleve and two pills for a day free of pain. way to go, coa