Band Powers
EEG band powers refer to the distribution of electrical activity in different frequency bands of the brain's electrical signals, measured in hertz (Hz). The EEG signal is typically divided into different frequency bands, each associated with specific mental states and activities. Band powers from all channels capturing data are extracted in this section. Here are the main EEG frequency bands:
Delta (0.5-4 Hz):
Delta waves are associated with deep sleep, unconsciousness, and certain types of cognitive processing. They are the slowest brain waves.
Theta (4-8 Hz):
Theta waves are linked to daydreaming, relaxation, and light sleep. Increased theta activity may be observed during meditation and creative thinking.
Alpha (8-12 Hz):
Alpha waves are prominent during a relaxed and awake state with closed eyes. They are often associated with a calm and focused mind.
Beta (12-30 Hz):
Beta waves are associated with active, alert, and engaged mental states. Higher beta frequencies are linked to intense cognitive activities, such as problem-solving.
Gamma (30-45Hz):
Gamma waves are associated with higher mental processing, including perception and problem-solving. They are also linked to conscious awareness and may play a role in binding sensory inputs.
Analyzing EEG band powers involves quantifying the amplitude or power of these frequency bands during specific tasks, conditions, or states. Changes in band powers can provide insights into cognitive states, emotional experiences, and neurological disorders. For example, increased theta activity might be associated with attention or relaxation, while elevated beta activity could indicate cognitive engagement or stress.
Band powers can be viewed in 2 different modes in the Neuphony Desktop App
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