The Electroencephalogram (EEG) is a brain functional test that allows us to detect the electrical activity of the cerebral cortex and, therefore, enables us to detect some anomalies in its functioning.

It consists of collecting, using surface electrodes (sensors), the electrical activity of the cerebral cortex. 

The placement of electrodes on the scalp is done according to a system known as 10-20, so called because the electrodes are spaced between 10% and 20% of the total distance between recognizable points on the skull. 

These key points, from which the measurements are made, are:

• Nasion indentation between forehead and nose.
• Inion; occipital protuberance.
• preauricular point; in front of the tragus of each ear.

Currently, caps that have 19 electrodes incorporated can be used, and It is placed directly on the patient's head. The electrodes are joined in a connector and this, in turn, connects with the EEG head (place where the electrical activity of each electrode). From here the signal is sent to the amplifiers of the central EEG apparatus for transcription.

During the duration of the study the patient will only feel the presence of electrodes placed directly on the scalp, or in a special cap for the purpose of holding the electrode, but it is not painful at all.

Indications:

Epilepsy represents the main neurological disorder in which it is strictly necessary to order an EEG Brain tumors, or other masses that occupy intracranial space, can detected and targeted through the EEG, through careful study of several layouts obtained. 

In head trauma, and in frequent meningoencephalic infections in children, the EEG is a good index of neuronal functioning, and serves to evaluate the treatment effectiveness and prognosis.

In summary, its greatest indication is in epilepsy; space-occupying injuries intracranial; brain injuries and infections and in some psychiatric syndromes Specific.

Contraindications:

Absolute: since it is a non-invasive test, there are no absolute contraindications for its realization.

We have this study in Neuro Spine & Pain Clinic, which is carried out by the Eng. Carlos Consejo and supervised by the Dr. Beatriz Montes de Oca. Upon obtaining the study, you are sent to a Neurophysiologist, anesthesiologist which will analyze the study carried out by our team.