After the treatment, the boy had much better control over his movements, and he was able to speak. 이 장치가 모든 사람에게 도움이 되지 않을 수 있다는 또 다른 위험이 있으며, 사람들은 tDCS가 효과가 없다고 말할 것입니다. In fact, people do not respond equally to stimulation, and no one yet knows exactly why.