EEG records postsynaptic potentials from pyramidal neurons in the cerebral cortex. In sleep physiology, we analyze three core parameters:

Active wakefulness, intense mental concentration, or REM sleep processing. Alpha Waves (8–12 Hz)

Sinusoidal, prominent over the occipital regions when eyes are closed.

: The electrodes on the scalp detect tiny changes in electrical potential generated by neurons in the cerebral cortex National Institutes of Health (.gov) Suggested PPT Structure Introduction : Definition of EEG and its role in polysomnography (sleep studies) Waveform Gallery

(Use a clean, comparison table in your PPT)