The NG Pistim electrode is a unique electrode that can be used for EEG monitoring and/or for transcranial electrical stimulation (tES). The NG Pistim is an Ag/AgCl electrode with a 1 cm radius that is based on the Next Generation (NG) assembling system. With its π cm² contact area, Pistim is ideal for multi-electrode stimulation protocols. In addition, due to its hybrid function, Pistim is optimal for experiments that combine tES with EEG.