There are 5 major categories of brain waves, each associated with different mental functions and states of consciousness:
Delta Waves (0.5-3 Hz): slow brain waves associated with deep meditation, dreamless phases of sleep, and healing [
R].
Theta Waves (3-8 Hz): brain waves related to intuition, dreaming, spatial navigation, alertness, meditation, memory formation, creativity, and subconscious awareness [
R].
Alpha Waves (8-12 Hz): the conscious brain's neutral resting state, associated with working memory, calculations, and the coordination of thoughts. [
R]