Choose the correct answer.
is an instrument designed to record the electrical activity of what?
Electrodes placed on the scalp pick
up what kind of signals.
These signals are amplified and used to operate a ....?
This method of brain reading
is also called an ......?
This method of brain reading is used to detect brain
abnormalities such as .....?
Your brain frequency waves
do what when you go to sleep?
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