- EEG waves consist of alternating excitatory and inhibitory synaptic potentials in the pyramidal cells of the cerebral cortex.
- A cortical evoked potential is an EEG change. It reflects synaptic potentials evoked in large numbers of neurons.
- In alert individuals, beta waves predominate.
- During relaxation, alpha waves predominate.
- During sleep, slow waves predominate, muscles relax, and heart rate and blood pressure decrease.
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