whether the person is currently having an epileptic seizure.whether the person talks or moves during the test.
Medical professionals refer to the shape and pattern of the waves as a “trace.” Some factors that can affect the trace include: The machine displays the brain’s electrical currents as waves on a graph. An EEG is a device that detects and measures the currents arising in different brain areas.Īn EEG consists of small electrodes that attach to the scalp and connect to an external machine via electrical cables. Nerve cells within the brain produce electrical currents.
