“…Frontal (FP1, FP2, FPz) [68], [82], [100], [70], [ Not Mentioned [47], [48], [43] Most of these studies used EEG data from the individual modality and used a large number of electrodes. Out of 52 articles, 19 research articles have been found where authors have used 19 electrodes EEG device and the electrode positions for the 19-channel EEG are Fp1, Fp2, F3, F4, F7, F8, C3, C4, T3, T4, T5, T6, P3, P4, O1, O2, Fz, Cz, Pz.…”