9 Questions
What is an electroencephalogram (EEG) mainly used for?
To measure electrical activity in the brain
What carries electrical impulses from the brain to an amplifier during an EEG?
Electrodes
What is the frequency range of Delta waves?
3 Hz or below
At what age do Alpha waves typically become the dominant rhythm?
After 13 years
What happens to Alpha waves when a person opens their eyes or becomes alert?
They disappear
Where are Alpha waves typically best seen?
Posterior regions of the head
What is the frequency range of Theta waves?
3.5 to 7.5 Hz
What is the term for the 'slow' activity in brain waves?
Theta activity
In which stage of sleep are Delta waves typically seen?
Stages 3 and 4 of sleep
Learn about electroencephalogram (EEG), a test that measures electrical activity in the brain, and how it records brain cell communication through electrical impulses and wave forms.
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