chelle,
i was hoping that someone who has actually had experience with ecp would post an answer for you. i don't have direct experience but i have read a lot ad seen others have ect while i was in the hospital.
as i understand it ect is used for severe mania that does not respond to drugs. they may use electric shock or insulun shock. they both aparently have the same result.
reboot your brain? not really. there is often some memory loss from ect, but today this is minimal and usually goes away in a short time.
i'm not sore what the reasons are for using ect, but personally i'd rather have my lithiuim and welbutrin.
hope this helps.
warren