Answer:
The necessary and proper clause. - Apex
Answer:
Electroencephalography ( EEG )
Explanation:
Electroencephalography -
It is one of the method which helps to detect any electrical activity in the brain , by using some metal discs attached to the scap of the person , is referred to as Electroencephalography .
This method can be used during the sleep time of the person , as the brain cells are always active and generates electrical impulse.
<u>The method is used to detect - </u>
Hence , from the given scenario of the question ,
The correct answer is Electroencephalography .
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