Mesothelioma can take a long time to develop, and the symptoms of the disease often do not present themselves until the cancer has progressed to later stages. Early signs of mesothelioma can be easily mistaken for common, everyday ailments, and as a result, early symptoms are often ignored, dismissed, or misdiagnosed.
Freebase(0.00 / 0 votes)Rate this definition: Electroencephalography is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of the brain.
By Reza Shouri, MD. Updated February 09, 2016. An electroencephalogram, or EEG, is one of the available tests used to diagnose epilepsy, and it's used quite commonly when doctors suspect someone has epilepsy. The electroencephalogram, or EEG, measures and records the electrical activity of the neurons in the brain. An EEG can tell your healthcare provider if there is abnormal electrical activity in the brain and, in some cases, the types of seizures you might be experiencing.