Which experimental methods measure neural activity and what does each assess?

Which experimental methods measure neural activity and what does each assess?

• A. EEG measures cortical electrical activity; EMG measures muscle activity; nerve conduction studies assess peripheral nerve conduction velocity and amplitude.
• B. EEG measures muscle activity; EMG measures brain signals; nerve conduction studies measure spinal reflexes.
• C. EEG measures neurotransmitter levels; EMG measures blood flow; nerve conduction studies measure synaptic efficiency.
• D. EEG measures heart rate; EMG measures respiration; nerve conduction studies measure cortical maps.

Answer: (A)