Figure 5.

Typical brain waves observed during simultaneous measurement using the solid-gel- and paste-based electrodes. (A) Brain waves observed during intermittent eye blinking. (B) Alpha waves. The upper and lower waves in each graph correspond to the signals obtained with the paste-based and solid-gel-based electrodes, respectively. The signals were collected with an in-house EEG amplifier (24 bit, 1024 Hz). The represented data were obtained through an eighth-order bandpass filter (1–15 Hz).