Fig. 4: High-fidelity chronic EEG signal monitoring from hairy scalp using hairlike electrodes and conventional gold electrodes.
From: Stick-and-play bioadhesive hairlike electrodes for chronic EEG recording on human
a EEG raw signal recorded by hairlike electrodes in eyes-closed paradigm. b EEG rhythms after filtering in 1-40 Hz range. Subset image: filtered alpha wave signal (8-12 Hz). c Power spectral density analysis (PSDA) for EEG signals in (a). d EEG raw signal recorded by hairlike electrodes in eyes open paradigm. e EEG rhythms after filtering in 1-40 Hz range. Subset image: filtered alpha wave signal (8-12 Hz). f PSDA for EEG signals in (d). g EEG raw signal recorded by conventional gold electrodes in eyes-closed paradigm. h EEG rhythms after filtering in 1-40 Hz range. Subset image: filtered alpha wave signal (8-12 Hz). i Power spectral density analysis (PSDA) for EEG signals in (g) j EEG raw signal recorded by conventional gold electrodes in eyes open paradigm. k EEG rhythms form (j) after filtering in 1-40 Hz range. Subset image: filtered alpha wave signal (8-12 Hz). l PSDA for EEG signals in (j).
