MedicalJanuary 22, 2025· 3 min read

Everything You Need to Know About EEG: Modern Brain Function Diagnostics

Electroencephalography (EEG) — a method for assessing brain functional state. When the procedure is needed, how it's performed, and the latest advances in its application.

Neurology

Electroencephalography (EEG) is a research method that assesses the functional state of the brain. EEG has been used in medicine for over a century, but modern technologies have made this method even more accurate and informative. In this article, we will explain how EEG is performed, who needs it, and share interesting facts from the world of science.

What is EEG?

EEG is a method of recording the brain's electrical activity using special electrodes attached to the scalp. It is a non-invasive and completely safe diagnostic method that helps identify:

epilepsy,
sleep disorders,
causes of headaches,
consequences of head injuries,
functional brain disorders.

Who is EEG prescribed for?

EEG can be useful in the following cases:

Diagnosis of epilepsy. EEG is one of the primary methods for detecting epileptic activity.
Sleep disorders. The study helps identify apnea, insomnia, and other disturbances.
Headaches and migraines. Sometimes their causes may be brain dysfunctions that can be detected through EEG.
Pediatric neurology. EEG helps assess brain condition in children with developmental delays, hyperactivity, or seizures.

How is EEG performed?

The procedure takes from 20 minutes to an hour and is conducted in a calm environment.

The patient wears a special cap with electrodes.
The doctor records brain activity at rest, while opening and closing eyes, and during simple tasks (for example, deep breathing).
All data are analyzed to formulate a diagnosis.

Important: Drinking coffee or energy drinks before the procedure is not recommended, as they may distort the results.

News and medical advances

EEG and artificial intelligence. Modern technologies allow the use of artificial intelligence to decode EEG data. This speeds up diagnosis and makes it more accurate. For example, AI can detect microscopic changes in brain activity that are difficult to notice manually.

Brain activity and disease prediction. Recent studies show that EEG can help predict the risk of neurodegenerative diseases, such as Alzheimer's, several years before symptoms appear.

Use of EEG in neuromarketing. EEG is used not only in medicine but also in marketing. Companies study brain reactions to advertising to understand which products evoke positive emotions in consumers.

Interesting facts about EEG

The first EEG was conducted in 1924. German psychiatrist Hans Berger was the first to record the brain's electrical activity, which became a revolution in neurology.
The brain never rests. Even during sleep, it remains active, allowing EEG to record sleep stages.
Every brain is unique. Electrical activity differs from person to person, so decoding an EEG requires high qualifications.

Why is it important to have an EEG in time?

EEG helps identify hidden disorders that may go unnoticed with other types of diagnostics. This is especially important when epilepsy, neurological disorders, or consequences of traumatic brain injury are suspected.

Where to have an EEG?

At our clinic, you can undergo the EEG procedure quickly, safely, and with maximum comfort. We use modern equipment, and the results are analyzed by experienced physicians.

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EEG Diagnostics: Brain Function Testing | Horev Medical