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Questions and Answers
What is an electroencephalogram (EEG) mainly used for?
What is an electroencephalogram (EEG) mainly used for?
- To analyze brain waves during sleep
- To stimulate electrical activity in the brain
- To measure electrical activity in the brain (correct)
- To diagnose brain tumors
What carries electrical impulses from the brain to an amplifier during an EEG?
What carries electrical impulses from the brain to an amplifier during an EEG?
- Wires
- Electrodes (correct)
- Brain cells
- Electrical impulses
What is the frequency range of Delta waves?
What is the frequency range of Delta waves?
- 7.5 to 13 Hz
- 3 Hz or below (correct)
- 3.5 to 7.5 Hz
- 13 Hz or above
At what age do Alpha waves typically become the dominant rhythm?
At what age do Alpha waves typically become the dominant rhythm?
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What happens to Alpha waves when a person opens their eyes or becomes alert?
What happens to Alpha waves when a person opens their eyes or becomes alert?
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Where are Alpha waves typically best seen?
Where are Alpha waves typically best seen?
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What is the frequency range of Theta waves?
What is the frequency range of Theta waves?
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What is the term for the 'slow' activity in brain waves?
What is the term for the 'slow' activity in brain waves?
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In which stage of sleep are Delta waves typically seen?
In which stage of sleep are Delta waves typically seen?
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