Brainwave types from lowest to highest frequency:


Delta

- 0.1 Hz to 3 Hz
Deep dreamless sleep, trance states, REMless sleep.

Theta

- 3 Hz to 7 Hz
REM, creativity, imagery, fantasy, inspiration. Person can be awake or asleep.

Alpha

- 7 Hz to 13 Hz
Awake but very relaxed. Awareness of bodily functions in relation to the mind.

Beta

- 13 Hz to 30 Hz
Fully awake, stress and flight or fight responses will push these frequencies higher. Primarily the frequencies people are at when doing stuff.
Note: Braindead people have no brainwaves.