Fig. 5: Chronic EEG recording using hairlike electrodes.
From: Stick-and-play bioadhesive hairlike electrodes for chronic EEG recording on human

EEG signals recorded in eyes-closed paradigm (a) and eyes-open paradigm (b) after 0, 6, 12 and 24 hours after wearing the hairlike electrodes. The graphs show discernable peak at 10 Hz in eye closed state (a) and no peak at eyes open state (b).