I will focus on the key unknowns in brain stimulation research:
1. The unknown effects of stimulation;
2. The unknown side-effects of stimulation;
3. The lack of clear dosing guidelines;
4. The lack of translational studies from adults to children.
I will set out these “known unknowns” in translating our knowledge about TMS and tDCS effects to clinical pediatric applications, and touch on the practical and ethical barriers to their widespread usage.
Probably you’ll want to skip to around 8:30 where Dr. Davis begins to discuss the use of tDCS in healthy people for the purpose of enhancing cognition and motor skills. He and Dr. Pascual-Leone go on to discuss their concerns around DIY tDCS, especially the possibility that, for instance, while one aspect of cognition may be enhanced, another may be depressed.