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Delta Waves
Frequency: 0.5 - 2.75 Hz
Delta waves mainly occur in infants and adults in deep sleep. Delta waves are also known for triggering the release of groth hormone, which provides healing, hence the reason why sleep is so important during the healing process. |
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Theta Waves
Frequency: 3.5 - 6.75 Hz
Theta waves occur mainly in children during the early stages of sleep and adults when they are emotionally stressed. Theta wave activity is also found during some short term memory tasks. Some Theta waves are noticed during the transition from sleep and during quiet wakefulness. |
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Beta Waves
Frequency: Low 13 - 16.75 Hz
Frequency: High 18 - 29.75 Hz
Beta Waves occur when an adult is focused, alert or engaged in any form of activity. Low amplitude beta waves are often associated with active, busy, or anxious thinking and active concentration. |
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Alpha Waves
Frequency: Low 7.5 - 9.5 Hz
Frequency: High 10 - 11.75 Hz
Alpha waves occur when a person is relaxed, but alert. During this stat a person is awake but resting. During sleep, alpha waves are replaced by beta waves. Alpha waves play an active role in network coordination an communication. Occipital alpha waves during periods of eyes closed are the strongest EEG brain signals. |
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Gamma Waves
Frequency: Low 31 - 39,75 Hz
Frequency: Mid 41 - 49,75 Hz
Gamma is associated with higher mental activity including perception and consciousness. It seems to be associated with consciousness. Gamma waves disappear under general anestesia. |
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