Transcranial [[electrical stimulation]] (tES) is a [[neuromodulation]] technique in which low [[voltage]] constant or alternating [[current]]s are applied to the human [[brain]] via [[scalp]] [[electrode]]s. The basic idea of [[TES]] is that the application of weak currents can interact with neural processing, modify [[plasticity]] and entrain brain [[network]]s, and that this in turn can modify [[behaviour]]. The technique is now widely employed in basic and [[translational research]], and increasingly is also used privately in sport, the military and recreation. The proposed capacity to augment recovery of brain function, by promoting learning and facilitating plasticity, has motivated a burgeoning number of clinical trials in a wide range of disorders of the nervous system
((Bestmann S, Walsh V. Transcranial electrical stimulation. Curr Biol. 2017 Dec 
4;27(23):R1258-R1262. doi: 10.1016/j.cub.2017.11.001. PubMed PMID: 29207262.
)).