Which of the following is inserted into an axon to record electrical potentials?
A) a single reference wire.
B) a microelectrode inserted into the axon interior
C) an oscilloscope
D) a voltmeter terminal
E) A thin metal cannula

Question

Quizplus · Accepted Answer

A microelectrode is a very thin electrode that can be inserted into the axon to record electrical potentials. This is a common technique used in electrophysiology experiments to measure the electrical activity of neurons. A reference wire or voltmeter terminal may also be used in conjunction with the microelectrode to measure the potential difference between two points, but the microelectrode itself is the actual device that is inserted into the axon. An oscilloscope is a device used to display and analyze electrical signals, but it is not inserted into the axon. A thin metal cannula may be used for injecting substances into the brain, but it is not used for recording electrical potentials.

Which of the Following Is Inserted into an Axon to Record