TDCS with DC waveform i also find some study where use theta-TDCS to cause a change in brain rythm.May it can be posible use similar apoach in the CRPS to restore a natural barinwave pattern in cortex area.But this need litle more advanced device capable to deliver specific waveform (similar to CES but with dirrect current may can be used porgramable CES device with diode to block lower part of wave).I try to build it with MP3 player and few other parts.