An electroencephalogram, or EEG, is a test that helps doctors diagnose problems with the brain’s electrical activity, such as seizures. An EEG test uses a special cap with electrodes to detect the ...
Hans Berger recorded the first human EEG in 1924. EEG records electrical activity via 16–25 scalp electrodes. Focal “slowing” in brain waves can indicate tumors or lesions. Patients must avoid ...
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