Table 1. The characteristics and information about the four different bands of the EEG signal Dingle et al. (1993).

Frequency Band Name	Frequency Bandwidth	The characteristics and information
Raw EEG signal	0–45 Hz	Awake
Delta	0.5–4 Hz	Deep sleep
Theta	4–8 Hz	Drowsy
Alpha	8–13 Hz	Relaxed
Beta	13–30 Hz	Engaged