Uppdat; 95 Hz istället för 7.83 Hz idag

State

Frequency Range

0.5Hz – 4Hz

This occurs in a deep dreamless sleep or unconsciousness.

Theta

4Hz – 7Hz

This is associated with drowsiness. It also occurs at first stage of sleep and during deep meditation, when we are awake but open to mental imagery. It has been associated with creativity, intuition daydreaming and fantasizing. Believed to reflect activity from the limbic system and increased activity is observed in anxiety, behavioral activation and inhibition.

Alpha

8Hz – 12Hz

This is the major rhythm seen in a normal, relaxed adult. It is present during most of life. It is considered a common state during alertness but not actively processing information. Alpha has been linked to creativity (creative people show alpha when listening and coming to a solution) and mental work. Alpha activity is also associated with overall mental and body/mind coordination, calmness, alertness and learning.

Beta

12Hz – 30Hz

Beta reflects highly active processing. Occurs during normal waking consciousness and outward attention. Slow beta: 12-17 is normal information processing and mental activity; Fast beta: 17-30 is heightened alertness and fight or flight, or anxiety.

Gamma

30Hz – 100Hz

This is associated with waking states and can occur when we are simultaneously processing information in both brain hemispheres. Whales and dolphins also operate in these frequencies.