Brain neurons produce electrical activity, which can be measured using electroencephalography (EEG). EEG recordings can be used to identify different types of brain waves, which are characterised by their frequency, the number of cycles per second (Hertz, or Hz).
Gamma waves (30-100 Hz)
Gamma waves are produced during activities that require high information processing, such as intense concentration, problem solving, and creative thinking.
Beta waves (12-30 Hz)
Beta waves are associated with alertness, concentration and active thinking.
Alpha waves (8-12 Hz)
Alpha waves are active during relaxation and in a calm meditative state. They occur when we are awake but resting with our eyes closed.
Theta waves (4-8 Hz)
Theta waves are mainly during deep relaxation, dreaming and light or early sleep.
Delta waves (0.5-4 Hz)
Delta waves are associated with deep sleep and unconsciousness.
Each type of brain wave is associated with a different state of consciousness and has its own specific function in the brain. In order to achieve the fast and expected results of hypnotherapy, it is good to perform it in the Alpha brainwave state, i.e. in a state of relaxation.