My son has had four surgeries, two for mapping and two to have scar tissue removed from his brain. Like Reed he's fairly bright but faces an uphill battle after graduation due to partial loss of eyesight & balance (both as a result of surgery).
After his first round of surgeries he didn't have any siezures for a year & a half, none. They did return however, & were becoming uncontrollable, and he had another round of surgeries this December and now has about one or two petit siezures daily, but that's better than the 150+ he had one day at the peak (prior to the 1st operation), actually a "low".
If an implant could solve the problem or even drastically reduce them for thousand of kids, that would be GREAT!
I hope for the best for your son's progress. Best regards...