Activity of Brain is recorded by ____________?

A. ECG (Electrocardiogram)
B. EEG (Electroencephalogram)
C. X-Ray
D. None of these

The correct answer is EEG (Electroencephalogram). The EEG device is used to measure the electrical activity of the human brain. The brain cells communicate with each other through electrical impulses, this process remains active even in the sleep.