If a researcher uses an EEG to measure the brain's response to a visual stimulus, neurons other than those that respond to visual stimuli will also be active. How do researchers determine which neurons are responding only to the visual stimulus?
A) They present the visual stimulus at a very high intensity.
B) They measure the activity of just one neuron at a time.
C) They make sure to present only a visual stimulus and nothing else.
D) They take the average of several EEGs.

Question

Quizplus · Accepted Answer

EEG measures the electrical activity of the brain as a whole, not individual neurons. By averaging several EEG recordings, researchers can reduce the noise from unrelated brain activity, making the specific response to the visual stimulus more apparent.

If a Researcher Uses an EEG to Measure the Brain's