When the person is alert, with open eyes and actively trying to solve some complex problem, the EEG shows ............ waves.
A
Alpha
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B
Beta
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C
Delta
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D
Gamma
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Solution
The correct option is B Beta An electroencephalogram (EEG) is a test, that measures and records the electrical activity of the brain. Beta waves have a frequency of 13 to 30 cycles per second. These waves are normally found, when person is alert or have taken high doses of certain medicines, such as benzodiazepines.