An electroencephalogram (EEG) test is a painless test that tracks and records the brain’s electrical signals. In this test, small metal disks with electrodes (thin wires) are placed on your scalp. The attached computer then provides information regarding your brain’s activity. The neurons in our brain send and receive electrical signals to communicate with each other. An EEG can easily detect any problem associated with this activity. It can help diagnose conditions such as seizures, epilepsy, head injuries, dizziness, headaches, and sleeping problems.