ABRET-CNIM: CERTIFIED NEUROPHYSIOLOGIC INTRAOPERATIVE MONITORING
TECHNOLOGIST | VERIFIED EXAM QUESTIONS AND ANSWERS - LATEST VERSION
2026/2027 (PASS GUARANTEE) TOP RATED
1. Which of the following best describes the primary function of the corticospinal
tract?
A. Carries sensory information from the periphery to the cortex
B. Transmits motor commands from the motor cortex to spinal motor
neurons
C. Regulates autonomic functions in the brainstem
D. Carries proprioceptive signals to the cerebellum
ANSWER : B
2. The dorsal column-medial lemniscal pathway primarily conveys which sensory
modalities?
A. Pain and temperature
B. Crude touch and pressure
C. Proprioception, vibration, and fine discriminative touch
D. Autonomic signals
ANSWER : C
3. During intraoperative monitoring, the SSEP N20 component is generated
primarily by which structure?
A. Dorsal horn of the spinal cord
B. Thalamus
C. Primary somatosensory cortex (area 3b)
D. Posterior column nuclei
ANSWER : C
4. The P37 component in lower extremity SSEPs is generated by which structure?
A. Lumbar spinal cord
B. Primary somatosensory cortex
C. Thalamus
, D. Brainstem
ANSWER : B
5. Which cranial nerve is monitored using the blink reflex?
A. CN III
B. CN V and CN VII
C. CN IX and CN X
D. CN XI
ANSWER : B
6. The lateral spinothalamic tract carries which sensory modalities?
A. Proprioception and vibration
B. Fine touch and pressure
C. Pain and temperature
D. Auditory information
ANSWER : C
7. During posterior tibial nerve SSEP monitoring, which electrode placement best
captures the lumbar spinal cord response?
A. Fpz-Cz
B. L1 spinous process to iliac crest reference
C. Erb's point ipsilateral
D. C5s-Fpz
ANSWER : B
8. Tc-MEP (transcranial motor evoked potentials) primarily assess which
descending pathway?
A. Corticospinal tract
B. Spinocerebellar tract
C. Dorsal columns
D. Rubrospinal tract
ANSWER : A
9. Which nerve root level is associated with the Achilles tendon reflex?
A. L2–L3
B. L3–L4
C. L4–L5
D. S1–S2
ANSWER : D
10. The cauda equina is composed of which type of neural elements?
, A. Upper motor neurons
B. Spinal cord parenchyma
C. Lumbosacral nerve roots
D. Anterior horn cells
ANSWER : C
11. The Na component of the median SSEP waveform recorded at the cervical
spine is generated by which structure?
A. Peripheral nerve
B. Dorsal horn cells
C. Dorsal column nuclei and medial lemniscus
D. Primary somatosensory cortex
ANSWER : C
12. During ulnar nerve SSEP, which cortical peak is the primary response?
A. N9
B. N13
C. N20
D. P27
ANSWER : C
13. The auditory brainstem response (ABR) wave V is generated by which
structure?
A. Cochlear nerve
B. Superior olivary complex
C. Inferior colliculus and lateral lemniscus near the inferior colliculus
D. Auditory cortex
ANSWER : C
14. Which ABR wave corresponds to the cochlear nerve (CN VIII) action
potential?
A. Wave I
B. Wave II
C. Wave III
D. Wave V
ANSWER : A
15. During cranial nerve VII monitoring in acoustic neuroma surgery, which
muscle provides the best EMG signal?
A. Orbicularis oculi and orbicularis oris
, B. Frontalis
C. Sternocleidomastoid
D. Masseter
ANSWER : A
16. The conus medullaris typically terminates at which vertebral level in adults?
A. T10–T11
B. L1–L2
C. L3–L4
D. S1
ANSWER : B
17. Which pathway is specifically monitored by dermatomal somatosensory
evoked potentials (DSEPs)?
A. Corticospinal tract
B. Spinocerebellar tract
C. Dorsal column-medial lemniscal pathway for individual dermatomes
D. Lateral spinothalamic tract
ANSWER : C
18. The 'N' in the MEP warning criterion typically refers to which parameter?
A. Noise level of the recording
B. Negative polarity of the waveform
C. Amplitude reduction threshold
D. Normalization factor
ANSWER : C
19. Corticobulbar tract fibers are most relevant to monitoring during surgeries near
which structures?
A. Thoracic spinal cord
B. Brainstem and cranial nerve motor nuclei
C. Lumbar plexus
D. Peripheral nerves
ANSWER : B
20. The H-reflex assesses the functional integrity of which neural arc?
A. Corticospinal tract
B. Ia sensory afferent and alpha motor neuron (monosynaptic reflex arc)
C. Gamma motor neurons
D. Dorsal columns
TECHNOLOGIST | VERIFIED EXAM QUESTIONS AND ANSWERS - LATEST VERSION
2026/2027 (PASS GUARANTEE) TOP RATED
1. Which of the following best describes the primary function of the corticospinal
tract?
A. Carries sensory information from the periphery to the cortex
B. Transmits motor commands from the motor cortex to spinal motor
neurons
C. Regulates autonomic functions in the brainstem
D. Carries proprioceptive signals to the cerebellum
ANSWER : B
2. The dorsal column-medial lemniscal pathway primarily conveys which sensory
modalities?
A. Pain and temperature
B. Crude touch and pressure
C. Proprioception, vibration, and fine discriminative touch
D. Autonomic signals
ANSWER : C
3. During intraoperative monitoring, the SSEP N20 component is generated
primarily by which structure?
A. Dorsal horn of the spinal cord
B. Thalamus
C. Primary somatosensory cortex (area 3b)
D. Posterior column nuclei
ANSWER : C
4. The P37 component in lower extremity SSEPs is generated by which structure?
A. Lumbar spinal cord
B. Primary somatosensory cortex
C. Thalamus
, D. Brainstem
ANSWER : B
5. Which cranial nerve is monitored using the blink reflex?
A. CN III
B. CN V and CN VII
C. CN IX and CN X
D. CN XI
ANSWER : B
6. The lateral spinothalamic tract carries which sensory modalities?
A. Proprioception and vibration
B. Fine touch and pressure
C. Pain and temperature
D. Auditory information
ANSWER : C
7. During posterior tibial nerve SSEP monitoring, which electrode placement best
captures the lumbar spinal cord response?
A. Fpz-Cz
B. L1 spinous process to iliac crest reference
C. Erb's point ipsilateral
D. C5s-Fpz
ANSWER : B
8. Tc-MEP (transcranial motor evoked potentials) primarily assess which
descending pathway?
A. Corticospinal tract
B. Spinocerebellar tract
C. Dorsal columns
D. Rubrospinal tract
ANSWER : A
9. Which nerve root level is associated with the Achilles tendon reflex?
A. L2–L3
B. L3–L4
C. L4–L5
D. S1–S2
ANSWER : D
10. The cauda equina is composed of which type of neural elements?
, A. Upper motor neurons
B. Spinal cord parenchyma
C. Lumbosacral nerve roots
D. Anterior horn cells
ANSWER : C
11. The Na component of the median SSEP waveform recorded at the cervical
spine is generated by which structure?
A. Peripheral nerve
B. Dorsal horn cells
C. Dorsal column nuclei and medial lemniscus
D. Primary somatosensory cortex
ANSWER : C
12. During ulnar nerve SSEP, which cortical peak is the primary response?
A. N9
B. N13
C. N20
D. P27
ANSWER : C
13. The auditory brainstem response (ABR) wave V is generated by which
structure?
A. Cochlear nerve
B. Superior olivary complex
C. Inferior colliculus and lateral lemniscus near the inferior colliculus
D. Auditory cortex
ANSWER : C
14. Which ABR wave corresponds to the cochlear nerve (CN VIII) action
potential?
A. Wave I
B. Wave II
C. Wave III
D. Wave V
ANSWER : A
15. During cranial nerve VII monitoring in acoustic neuroma surgery, which
muscle provides the best EMG signal?
A. Orbicularis oculi and orbicularis oris
, B. Frontalis
C. Sternocleidomastoid
D. Masseter
ANSWER : A
16. The conus medullaris typically terminates at which vertebral level in adults?
A. T10–T11
B. L1–L2
C. L3–L4
D. S1
ANSWER : B
17. Which pathway is specifically monitored by dermatomal somatosensory
evoked potentials (DSEPs)?
A. Corticospinal tract
B. Spinocerebellar tract
C. Dorsal column-medial lemniscal pathway for individual dermatomes
D. Lateral spinothalamic tract
ANSWER : C
18. The 'N' in the MEP warning criterion typically refers to which parameter?
A. Noise level of the recording
B. Negative polarity of the waveform
C. Amplitude reduction threshold
D. Normalization factor
ANSWER : C
19. Corticobulbar tract fibers are most relevant to monitoring during surgeries near
which structures?
A. Thoracic spinal cord
B. Brainstem and cranial nerve motor nuclei
C. Lumbar plexus
D. Peripheral nerves
ANSWER : B
20. The H-reflex assesses the functional integrity of which neural arc?
A. Corticospinal tract
B. Ia sensory afferent and alpha motor neuron (monosynaptic reflex arc)
C. Gamma motor neurons
D. Dorsal columns
