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Healthy brain activity typically shows a sloping curve, with more power in lower frequencies and less in higher frequencies.

Brainwaves are recorded using electroencephalography (EEG) , where sensors measure the voltage fluctuations caused by ionic current flows within neurons.

Brainwaves are rhythmic electrical impulses generated by neural communication, ranging from 0.1 to over 100 Hz. They are categorized by frequency, reflecting different states of consciousness and mental activity.

The slowest waves, dominant during deep, dreamless sleep. Key Aspects of Brainwave Activity