An electroencephalogram (EEG) is a clinical neurophysiology exam that records the electrical activity of the brain. In fact, the brain, like the nerves, comprises a very dense network of neurons that communicate with one another by low-intensity electrical signals.
For this noninvasive examination, which typically lasts 25 minutes, the patient wears a cap with integrated electrodes. A saline paste makes the connection between the electrodes and the skull. During the examination, the patient sits quietly in an armchair. The patient may be asked to breathe deeply for a short period and the patient will see flashes of light.
The EEG is used to look for an irritative activity in the brain in cases of epilepsy, and also to understand the reason for reduced alertness as in the case of coma or dementia. It can also be used for sleep analysis.
This service is provided by the following doctors: