Not necessarily... I can just imagine a scenario where the "algorithm" reacts based off of some stimulus in the brain and applies stimulation in an attempt to c

Not necessarily... I can just imagine a scenario where the "algorithm" reacts based off of some stimulus in the brain and applies stimulation in an attempt to counteract that... If there's so much as a small flaw and the stimulation it applies in return causes the original stimulus to worsen instead of be relieved, I could imagine the reaction from the algorithm continuing to make the situation worse if not carefully designed.