Electroencephalography (EEG) is typically a non-invasive method to record electrical activity of the brain via the scalp. EEG is most often used to diagnose epilepsy, which causes abnormalities in EEG readings. It is also used to diagnose sleep disorders, coma, encephalopathies, and brain death. EEG used to be a first-line method of diagnosis for tumors, stroke and other focal brain disorders. We offer an extensive range of cup electrodes for EEG applications, including reusable and disposable options.