SSEPs (latest version verified for
accuracy) (Questions + Answers)
Solved 100% Correct!!
When recording a posterior tibial nerve SSEP, the Fpz ‐ C5s channel
records
A- subcortical near‐field potentials
B- the Erb's point potential
C- stationary lumbar potentials
D- subcortical far ‐ field potentials -
correct answer ✅D- subcortical far ‐ field potentials
In the 10 ‐ 20 system of electrode placement, the point 20% (of the
nasion‐inion distance) anterior to Cz is called
A- Fz
B- Fpz
C- C1
D- Pz -
correct answer ✅A- Fz
An electrode measured 20% lateral to Cz on the right using 10 ‐ 20
system is
A- T3
B- A2
,SSEPs (latest version verified for
accuracy) (Questions + Answers)
Solved 100% Correct!!
C- C4
D- C3 -
correct answer ✅C- C4
P14 is a far ‐ field, subcortically generated response which probably
reflects
A- caudal medial lemniscal activity
B- activity from the precentral gyrus
C- passage of the afferent volley
D- a stationary cervical potential -
correct answer ✅A- caudal medial lemniscal activity
If over three hours the PTN cortical response attenuates while
subcortical is stable:
A- Do a wake ‐ up test
B- Stimulate peroneal nerve
C- Keep monitoring subcorticals
D- Inform the surgeon monitoring is no longer reliable -
correct answer ✅C- Keep monitoring subcorticals
,SSEPs (latest version verified for
accuracy) (Questions + Answers)
Solved 100% Correct!!
In general, filter settings for SEP recordings
A- should always be 30 ‐ 3000 Hz
B- can be narrower for cortical than peripheral responses
C- can be narrower for peripheral than cortical responses
D- should always include 60 Hz band pass filters -
correct answer ✅B- can be narrower for cortical than peripheral
responses
The initial waveform recorded of a near ‐ field PTN cortical
potential is
A- of very low amplitude due to the significant distance between
the generator and recording electrode
B- positive due to electrotonic depolarization of the membrane
under the recording electrode
C- always obscured by stimulus artifact
D- negative due to depolarization of membrane potentials -
correct answer ✅B- positive due to electrotonic depolarization of
the membrane under the recording electrode
, SSEPs (latest version verified for
accuracy) (Questions + Answers)
Solved 100% Correct!!
A patient is admitted to the operating room diagnosed with a
herniated cervical disc at C 5/6. The most appropriate nerve(s) to
monitor during the resulting surgical procedure would be the:
A- ulnar nerve
B- median and posterior tibial nerves
C- median and auditory nerves
D- peroneal and ulnar nerves -
correct answer ✅B- median and posterior tibial nerves
Somatosensory evoked potentials are most likely to be highly
variable and less reliable in patients with
A- myopathy
B- neuromuscular disease
C- a history of nicotine abuse
D- alcoholism -
correct answer ✅B- neuromuscular disease
Lower extremity SEPs are transmitted through the
A- gracilis nucleus
B- the superior olivary complex
accuracy) (Questions + Answers)
Solved 100% Correct!!
When recording a posterior tibial nerve SSEP, the Fpz ‐ C5s channel
records
A- subcortical near‐field potentials
B- the Erb's point potential
C- stationary lumbar potentials
D- subcortical far ‐ field potentials -
correct answer ✅D- subcortical far ‐ field potentials
In the 10 ‐ 20 system of electrode placement, the point 20% (of the
nasion‐inion distance) anterior to Cz is called
A- Fz
B- Fpz
C- C1
D- Pz -
correct answer ✅A- Fz
An electrode measured 20% lateral to Cz on the right using 10 ‐ 20
system is
A- T3
B- A2
,SSEPs (latest version verified for
accuracy) (Questions + Answers)
Solved 100% Correct!!
C- C4
D- C3 -
correct answer ✅C- C4
P14 is a far ‐ field, subcortically generated response which probably
reflects
A- caudal medial lemniscal activity
B- activity from the precentral gyrus
C- passage of the afferent volley
D- a stationary cervical potential -
correct answer ✅A- caudal medial lemniscal activity
If over three hours the PTN cortical response attenuates while
subcortical is stable:
A- Do a wake ‐ up test
B- Stimulate peroneal nerve
C- Keep monitoring subcorticals
D- Inform the surgeon monitoring is no longer reliable -
correct answer ✅C- Keep monitoring subcorticals
,SSEPs (latest version verified for
accuracy) (Questions + Answers)
Solved 100% Correct!!
In general, filter settings for SEP recordings
A- should always be 30 ‐ 3000 Hz
B- can be narrower for cortical than peripheral responses
C- can be narrower for peripheral than cortical responses
D- should always include 60 Hz band pass filters -
correct answer ✅B- can be narrower for cortical than peripheral
responses
The initial waveform recorded of a near ‐ field PTN cortical
potential is
A- of very low amplitude due to the significant distance between
the generator and recording electrode
B- positive due to electrotonic depolarization of the membrane
under the recording electrode
C- always obscured by stimulus artifact
D- negative due to depolarization of membrane potentials -
correct answer ✅B- positive due to electrotonic depolarization of
the membrane under the recording electrode
, SSEPs (latest version verified for
accuracy) (Questions + Answers)
Solved 100% Correct!!
A patient is admitted to the operating room diagnosed with a
herniated cervical disc at C 5/6. The most appropriate nerve(s) to
monitor during the resulting surgical procedure would be the:
A- ulnar nerve
B- median and posterior tibial nerves
C- median and auditory nerves
D- peroneal and ulnar nerves -
correct answer ✅B- median and posterior tibial nerves
Somatosensory evoked potentials are most likely to be highly
variable and less reliable in patients with
A- myopathy
B- neuromuscular disease
C- a history of nicotine abuse
D- alcoholism -
correct answer ✅B- neuromuscular disease
Lower extremity SEPs are transmitted through the
A- gracilis nucleus
B- the superior olivary complex
