Electroencephalogram EEG
 
 

Electroencephalogram (EEG)

An electroencephalogram, also known as an EEG, analyzes the electrical activity of the brain. Electrodes are placed on the scalp and the electrodes are connected to machine that uses signals to record electrical activity. An EEG is used to detect and monitor brain diseases such as Alzheimer's and find out reasons for confusion and fainting. It is used for brain infections, tumors and to find out the cause of seizures. An EEG is also used when there are changes in body chemistry that affect the brain.