Final Exam 4 CNIM Test Questions and Already Passed Solutions Updated.

Final Exam 4 CNIM Test Questions and
Already Passed Solutions 2025-2026
Updated.
4. If an amplifier is rated as having 120dB common mode rejection ratio, which of the following
ratios of in-phase to

out-of-phase signals would be expected?

10,000:1

100,000:1

500,000:1

1,000,000:1 - Answer 1,000,000:1



7. Which of the following opposes any change in current?

Capacitance

Impedance

Inductance

Resistance - Answer Inductance



The ability of an inductor to store energy in the form of a magnetic field (and consequently to
oppose changes in current) is called inductance.



. Which of the following electrode materials has little electrode potential drift and a

long time constant?

Tin

Gold

Silver

Stainless steel - Answer Gold



With referential recording, maximal amplitude cortical evoked potentials following stimulation
of the left posterior

tibial nerve usually would be found between:

C3 and Cz

C4 and P4

Fz and Cz

C4 and Cz - Answer C3 and Cz

, Contralateral

medial cortex

directs the

P37 toward

ipsilateral

scalp (CPz and CPi)



Which of the following will best record the P37 peak following left posterior tibial nerve
stimulation?

CP3

CP4

Fpz

C5S - Answer CP3



Contralateral

medial cortex

directs the

P37 toward

ipsilateral

scalp (CPz and CPi)



Identification of wave V of the BAEP may require

Tympanic electrodes

Bilateral stimulation

Decreasing stimulus intensity

Use of a noncephalic reference - Answer Decreasing stimulus intensity. Identification of wave
V may require decreasing stim intensity. Decreasing intensity will cause an increase in latency
making it easier to identify from wave IV.



What is the most likely effect of isoflurane at MAC 1.5 on tibialis anterior CMAP amplitude in
response to spinal

stimulation?

Marked increase

Marked decrease