There are four types of EEG patterns that can be noticed on a recording: alpha waves, beta waves, theta waves, and delta waves. The electrical impulses in an EEG recording have the appearance of wavy lines with peaks and valleys.

Brain damage as a result of a head injury.

As an EEG can determine changes in brain activity, this is a useful method for diagnosing brain disorders.īelow are some of the conditions which can be detecting and measured from an EEG: These electrical impulses are displayed as wavy lines on an EEG recording.Ī doctor may advise the use of an EEG to be able to diagnose several conditions. This is how neurons pass messages to each other in order for behaviors, thought, and other conscious or unconscious processes to occur.ĮEGs record the electrical activity for a period of time to be able to indicate the level of activity in the brain. The electrical activity in the brain is known as action potential, or nerve impulses. The electrodes of the EEG analyze the electrical impulses that are being communicated in the brain, which then gets transmitted to a computer which monitors the results. EEG is used to show the presence or absence of specific brain activity in specific areas of the brain, with an accuracy within milliseconds. The recording shows the electrical activity from small areas of the brain. The electrodes cannot pick up signals for individual neurons. The cells of the brain communicate to each other via electrical impulses, which are picked up by the EEG through small metal discs, called electrodes, which get attached to the scalp. German physiologist Hans Berger was known as the inventor of the EEG back in 1924 where he conducted the first EEG on a human. It produces a chart (an encephalogram) which shows how Which can detect and record minute changes in electrical activity within the brain. The electroencephalogram (EEG) is a neuroimaging test What is an EEG Test (Electroencephalogram)?īy Olivia Guy-Evans, published June 16, 2021

Eeg stands for