The electrical activity in your brain is measured by a procedure called an electroencephalogram (EEG). The main form of communication between brain cells is electrical impulses. An EEG can be used to identify potential problems linked to this activity. An EEG measures and captures brain wave patterns. Electrodes, which are tiny flat metal discs, are connected to your scalp using wires. The electrodes analyze the electrical impulses coming from your brain, and they then transmit their findings to a computer via signals. Electrical impulses appear as wavy lines with peaks and valleys in an EEG recording. These lines make it possible for medical professionals to quickly assess any unusual patterns. Unusual behaviors may be a sign of seizures or other brain conditions. A number of conditions, including epilepsy, head trauma, encephalitis (brain inflammation), brain tumors, encephalopathy (a disease that affects the brain), sleep disorders, stroke, and dementia are confirmed or ruled out using the results of an EEG. An EEG can be performed on someone who is unconscious to determine how active their brain is. The test can also be used to monitor activity during brain surgery.
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