“…There are a variety of ways to augment consolidation in humans, including pharmacologically [ 21 ], by utilizing the testing effect [ 22 ], distributed learning [ 23 ], dreaming [ 24 ], and manipulation of physiological states [ 25 ], among others. Recently, transcranial current stimulation (tCS), including transcranial direct and alternating current stimulation (tDCS, tACS, respectively), has become a popular method to communicate with the brain in its own language, electricity [ 26 ], as well as to augment cognition [ 27 ].…”