An electroencephalogram
A)is primarily a record of action potential activity in the cerebral cortex
B)represents the momentary collective postsynaptic activity in the cerebral cortex
C)displays larger brain waves when the eyes are open than when the eyes are closed
D)displays impulse activity deep inside the brain
E)is useful in all of the ways mentioned above

Question

Quizplus · Accepted Answer

An electroencephalogram (EEG) represents the momentary collective postsynaptic activity in the cerebral cortex. It measures the electrical activity of the brain using electrodes placed on the scalp, and the resulting recording shows the patterns of neural activity in the cortex. It does not directly measure action potentials or impulse activity deep inside the brain. EEG waves are generally larger when the eyes are closed, indicating that the brain is less active during this state.

An Electroencephalogram