What is an electroencephalograph?

The

brain of each person has electrical signals that move in certain samples. Electroencephalograph (EEG), also called Electroencephalogram , records these signals through electrodes or electrical conductors. Signals are sent to a computer that shows electrical pulses as a group of undulating lines.

This test is usually performed for diagnostic purposes. If the patient has seizures, the electroencephalograph may detect it. Patients suffering from head injuries and general confusion can also undergo EEG. Other conditions that the electroencephalograph may evaluate include tumors, Alzheimer's disease and infection. It can be used to evaluate brain activity during unconsciousness. If the patient is in deep coma, an electroencephalograph may be performed to determine whether the patient has any brain activity.

EEG Results will take several days. The results will be interpreted by a neurologist. If the results are considered to be abnoRMAL, additional tests may be needed to ensure a specific diagnosis.

Sometimes the test results may not be accurate. This may happen if the patient moved too much during the test, or if his hair was greasy, dirty or coated with cosmetic products. Some drugs, such as sedatives and antiepileptic drugs, may also disrupt the accuracy of the results. Patients who have hypothermia also known as low body temperature, or who are unconscious because of drug poisoning, may not be able to undergo this test.

To ensure that the results are as accurate as possible, patients must usually take several preparatory steps in front of an electroencephalograph. It may be recommended to stop taking certain medicines for a period of time. Patients usually have to refrain from consumptionkofeine for eight hours before the test. They should wash their hair and avoid using the conditioner and other products forHair care, because these can disrupt electrodes. Patients may also be asked to sleep as little as possible at night to evaluate certain patterns of brain activity.

In the procedure, the patient lies on the table or bed with his eyes closed. The electrodes will be attached to his head with a sticky paste. Patients should refrain from moving or speaking unless it is asked. This test can take one to two hours.

The technologist may ask the patient to look at the strok light. Patients may be asked to hyperventilation or breathe quickly. These activities help to record certain types of electrical activity. Some patients may need to sleep during the test. For those who are unable to fall asleep, a sedative can be served.

Electroencephalograph is associated with minimal risks. The patient of seizures that is asked for hyperventilation or to look at Strobo can go into a seizure. If a sedative has been served, the patient will not be able to go homeAnd he'll need someone to do it for him.