Mastering the Basics of Electroencephalography (EEG)

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Questions and Answers

How does EEG monitor brain activity?

By recording voltage variations caused by ionic current in the brain neurons

Who is credited with discovering that electrodes placed on the scalp could detect different patterns of electrical activity in the brain?

Hans Berger

What does EEG stand for?

Electroencephalography

What are scientists currently studying in relation to EEG?

The relationship between specific brain waves and sleep phases, emotional states, psychological profiles, and types of mental activity Signup and view all the answers

What is electroencephalography (EEG)?

Electroencephalography (EEG) is a method to record an electrogram of the spontaneous electrical activity of the brain. Signup and view all the answers

What is the main purpose of EEG in medicine?

To record the brain's spontaneous electrical activity over time Signup and view all the answers

How is EEG typically performed?

EEG is typically non-invasive, with the electrodes placed along the scalp using the International 10–20 system. Signup and view all the answers

What is electrocorticography (ECoG)?

Electrocorticography is a method involving surgical placement of electrodes and is sometimes called 'intracranial EEG'. Signup and view all the answers

What does the measurement of voltage fluctuations in EEG allow?

The measurement of voltage fluctuations in EEG allows the evaluation of normal brain activity. Signup and view all the answers

How is clinical interpretation of EEG recordings usually done?

Clinical interpretation of EEG recordings is most often performed by visual inspection of the tracing or quantitative EEG analysis. Signup and view all the answers