EEG (Electroencephalogram): Purpose and Procedure

EEG (Electroencephalogram): Purpose and Procedure

EEG electrodes are used in electroencephalography (EEG) to measure a signal of brain activity. These electrodes are mainly used in neurological assessment and cognitive studies.

EEG electrodes are recording devices that record the electrically stimulated signals from various parts of the brain, in order to determine what kind of activity is commonly taking place in each area. These recordings allow scientists to study the different nuanced aspects of consciousness, and can also allow doctors to better diagnose certain diseases.

Electroencephalography (EEG) is the process of using an eeg cap placing conductive needle points on your forehead to measure the electrical impulses in your brain. This provides a record of your brain wave patterns or rhythms.

Why Is An Electroencephalography (EEG) Done

An EEG records brain waves from different parts of the brain and translates them into patterns on paper or a computer monitor. The test can take about 30 minutes to an hour, depending on the number of electrodes used and whether the patient is taking any sedating drugs.

EEGs are used to diagnose neurological conditions or illnesses. They can also be used to monitor the brain activity of people who have been exposed to certain toxins, as well as patients who are undergoing brain surgery.

EEGs are also used to help screen for sleep disorders and other medical conditions such as epilepsy, seizure disorders, Alzheimer's disease and dementia. The EEG is often done in conjunction with other tests, such as CT scans or MRI scans. An EEG can also help determine the cause of:

  • Seizures (epilepsy)
  • Sleep disorders such as narcolepsy or insomnia
  • Migraine headaches

The Procedure Of Electroencephalography (EEG)

Electroencephalography (EEG) is a medical test that records electrical activity from the brain. An EEG provides a unique snapshot of your brain's activity by measuring voltage fluctuations from electrodes placed on your scalp.

An EEG is used to look for abnormal patterns of brain activity (brain waves) associated with seizures, tumors, or other disorders. It can also be used to detect abnormal patterns of brain activity in people who are unconscious or unable to communicate.

You're asked to lie down on a flat surface while wearing an elastic cap fitted with electrodes. The electrodes are placed according to the type of information needed – for example, specific areas in the brain or across the entire scalp. Some patients may require sedation during the procedure so they remain still and relaxed.

The electrodes attached to your head monitor electrical activity generated by nerve cells in different regions of your brain. A computer analyzes these signals and displays them on a screen as waves corresponding to different levels of activity within each region being studied.


The procedure of electroencephalography is a non-invasive and harmless method as it records the electrical activities of the brain by means of electrodes attached to the scalp. The utilization of EEG is extensively used in various fields like in research, clinical diagnosis, and also in treatment monitoring. If your in the market for an Eeg cap visit Alibaba today.