Encephalography is a fairly popular procedure. It is prescribed to assess the state of the brain for any physical or neurological damage. The very name of the procedure comes from the Greek words encephalon - brain and grapho - I write. As a result of the study, data is obtained that the doctor can already decipher and diagnose.
Encephalography is also often called an encephalogram or EEG for short. This procedure is completely painless and is performed even for children.
How is the EEG procedure performed?
When carrying out an encephalogram, a special helmet is put on the patient's head. There are electrodes on it, so outwardly it looks quite original and interesting. These wires are connected to the main device - an electroencephalograph, which receives all the data.
During the procedure, the patient must sit in a chair in a comfortable position. His eyes, as a rule, are closed at this time.
The main difficulty with using this procedure in children lies precisely in persuading the child to sit quietly and for exactly a few minutes. After all, a helmet can easily scare a baby.
The reliability of the results is ensured by isolating the patient from light and sound. Before the procedure, you need to eat, because hunger can have an effect on the human brain, as a result of which the data will be inaccurate.
First, doctors study the alpha rhythms of the brain, and then proceed to test its response to external stimuli. Stimulation is usually carried out with the help of light and sound noise. Moreover, all this effect must be calculated and dosed. So, for example, if light is used, the flashes cannot be more intense than 0.6 J.
If the procedure is performed on an unconscious patient, pain may be the main irritant. The doctor may press on the skin with a fingernail or use other options.
The point of this test is to calculate the length of the oscillations and the time the brain returns to its normal working rhythm. Based on these parameters, you can get a complete picture of the work of the brain.
True, today it is not EEG that is increasingly used to study brain activity, but modern methods, such as CT and MRI.
When EEG is irreplaceable
Despite the fact that today EEG is already as popular as it was 15 years ago, it still remains the most optimal research method for epilepsy. It is the encephalogram of the brain that makes it possible to separate non-epileptic seizures of brain activity from epileptic ones. In addition, it helps to identify foci of epileptic activity, which is very important and useful for their treatment and correction.
The advantages of this research method are usually distinguished by its low cost and complete safety for the patient. In addition, it can be easily performed on a person in a coma. Indeed, it is the encephalogram that most accurately reflects the adequacy of the work of all structures of the human brain.