Fig. 1
From: Mobile brain imaging in butoh dancers: from rehearsals to public performance
EEG, EOG, IMU locations and impedance values. a, EEG-channel montage according to a modified 10–20 system, with ground and reference electrodes placed on the earlobes, channels TPO9 and TP10 on the right and left temples, channels PO9 and PO10 above and below the right eye, and IMU Opal sensors on the forehead. b, Close-up image of active EEG electrodes, and location of EOG and IMUs. c, Impedance values (kΩ) of the 32-channel EEG for each of five subjects (A-E) at the beginning and the end of the experiment. Impedance values > 60 kΩ are considered low quality, and < 25 kΩ, of high quality. Subject E was the only participant who used different EEG equipment, with Bluetooth transmission vs. Wi-Fi.