Our brain transmits different types of frequencies depending upon the individual’s conscious state, which can be measured using EEG. During the wakeful state, we emit prominently beta waves. In a relaxed state, we emit a slower alpha wave. Theta waves are even slower, characterized by drowsiness and the onset of REM sleep. Delta brain waves are the slowest that represent deep sleep, whereas gamma brain waves are the fastest that represent heightened alertness or concentration.
