Electroencephalograph (EEG) is an instrument used to record the electrical activities occurring in the brain.
The electrical activities are recorded in graphical form, and this graphical representation of the electrical activities is called as electroencephalogram. EEG is used in the diagnosis of epilepsy, sleep diseases and many other.
Other techniques used to measure the electrical activity of the brain are, ERP (evoked response potential); MEG (magnetoencephalography) and single cell recording.
Thus, the blanks can be filled with EEG; ERP; MEG; single-cell recording.