The electroencephalograph , or eeg , is a machine commonly used by doctors and researchers who want to know what the brain is doing without having to open up someone 's head and look inside .
It would have shown up on the eeg . You were dead . Tell us what happened .
没脑电波,你死了所以发生什么事?
Eeg ( electroencephalogram ) readings , which test the brain 's electrical activity , were typical of an awake state and the rats moved about freely with their eyes open .