What is the source of the electrical potentials recorded from the scalp of a human subject?
A) the natural current found in skin
B) the signals generated by the contraction of muscle fibers that lie under the scalp
C) the summated activity of nerve cell action potentials and postsynaptic potentials
D) the signals generated by the activity of the sweat glands
E) the movements of our eyes

Question

Quizplus · Accepted Answer

The electrical potentials recorded from the scalp of a human subject are generated by the summated activity of nerve cell action potentials and postsynaptic potentials. These electrical potentials are known as electroencephalogram (EEG) signals and are commonly used in neuroscience research to study brain activity.

What Is the Source of the Electrical Potentials Recorded from the Scalp