Guest post by PlatoScience CEO, Balder Onarheim, on why he sees mental health as the future of tDCS devices. While tDCS has historically always been used for medical purposes, for a long time the more ‘performance enhancement’ aspects of tDCS has received more attention. However, in the more recent years the focus seems to have shifted back to medical use, especially for mental health, but also for a number of other medical purposes such as pain, addiction, and rehabilitation.