Electroencephalogram

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Electroencephalogram (EEG) used to measure abnormalities in the brain which related to electrical activity (Fig.1). This measurement tracks and records brain wave patterns by using electrodes are placed on the scalp, and then signals go to a computer to record the results. Abnormal patterns in EEG indicate seizures and other problems [3][6].
The importance reason for using EEG is to diagnose and show seizure disorders. Also EEGs help to help to identify causes of other problems like sleep disorders and changes in behavior. To evaluate the brain activity after head injury or before heart or liver transplantation the EEG is a good choice [3].
The electrodes in conventional scalp EEG are placed on the scalp with a conductive gel or paste which

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