I think it still needs more studys and multiple montages in the studys. i use tdcs i find my cognitive ability extremely enhanced depending on the montage. Personally i think people are thinking of tdcs the wrong way. People are thinking stimulation is  the answer when really i think destimulation is what we should be looking at. For example allan snyders work on trying to unleash sevant ability in regular people witch uses actually tms. uses concept of shutting down the left temporal lobe. witch seemed have alright results. I figure by hindering the brain it will create different neural pathways and adapt like the body does. same as if you where to strength train. Be like how people who loose a sense gain more atunment in their others. except by temporaly hinder the brain when it heals youll have multiple path ways working fo ya. like stregth training you get more muscle recruitment. but just my 2 cents witch in canada well equates to nothing haha.