What Are Brainwaves?
More about delta, theta, alpha, beta and gamma brainwave frequencies.
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Your brain has around 100 billion brain cells, called neurons.
Neurons communicated to each other by sending electrical signals.
Those electrical signals tend to oscillate at common frequencies, which we call brainwaves.
Different brainwave frequencies related to different brain states, from very alert to very relaxed.
Neuroscientists use Electroencephalographs (EEG) to read brain waves.
We use the Muse EEG device with clients, to monitor their brain state. You can buy a home use Muse, with a 15% discount, here: Buy Muse.
Brainwaves are measured in Hertz (Hz) which just means beats per second.
The main types of brainwave are:
Below, we'll look at each one in more detail.
Gamma brainwaves operate at 32Hz to 100Hz.
This is the most alert state with heightened levels of thought, such as when problem solving or in a scary or stressful situation.
Scientific research has shown that Gamma waves are often present in traumatic situations, which can trigger the amygdala brain part to store powerful emotional memories, resulting in Post-Traumatic Stress, PTSD, CPTSD or anxiety.
Beta brainwaves operate at 13Hz to 32Hz.
This is the normal awake state, where you are thinking or talking about something.
Alpha brainwaves operate at 8Hz to 13Hz.
This is when your mind and body is relaxed.
Theta brainwaves operate at 4Hz to 8Hz.
This is present during relaxed creative activities, dreams, hypnotherapy and some meditations.
They often happen in trance states, such as when people are driving on a motorway or watching television.
Delta brainwaves operate at 0.5Hz to 4Hz.
This is present during deep sleep, where there are no dreams and the mind and body does most of its repair work.
We also create delta waves when using Havening Techniques, which are a powerful way to remove emotional memories of trauma from the amygdala.
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More about delta, theta, alpha, beta and gamma brainwave frequencies.