SSEPs Exam Questions & Answers
(Grade A+)
When recording a posterior tibial nerve SSEP, the Fpz ‐ C5s channel
records -
correct answer ✅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 -
correct answer ✅Fz
An electrode measured 20% lateral to Cz on the right using 10 ‐ 20
system is -
correct answer ✅C4
P14 is a far ‐ field, subcortically generated response which probably
reflects -
correct answer ✅caudal medial lemniscal activity
If over three hours the PTN cortical response attenuates while
subcortical is stable: -
correct answer ✅Keep monitoring subcorticals
, SSEPs Exam Questions & Answers
(Grade A+)
In general, filter settings for SEP recordings -
correct answer ✅can be narrower for cortical than peripheral
responses
The initial waveform recorded of a near ‐ field PTN cortical
potential is -
correct answer ✅positive due to electrotonic depolarization of the
membrane under the recording electrode
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: -
correct answer ✅median and posterior tibial nerves
An advantage of referential, as opposed to bipolar recording of
spinal cord somatosensory evoked potentials, is -
correct answer ✅avoiding cancellation of the potentials as a result
of recording from adjacent levels
What is the main advantage of asynchronous bilateral stimulation?
-
correct answer ✅Differentiation of local vs. systemic effects
(Grade A+)
When recording a posterior tibial nerve SSEP, the Fpz ‐ C5s channel
records -
correct answer ✅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 -
correct answer ✅Fz
An electrode measured 20% lateral to Cz on the right using 10 ‐ 20
system is -
correct answer ✅C4
P14 is a far ‐ field, subcortically generated response which probably
reflects -
correct answer ✅caudal medial lemniscal activity
If over three hours the PTN cortical response attenuates while
subcortical is stable: -
correct answer ✅Keep monitoring subcorticals
, SSEPs Exam Questions & Answers
(Grade A+)
In general, filter settings for SEP recordings -
correct answer ✅can be narrower for cortical than peripheral
responses
The initial waveform recorded of a near ‐ field PTN cortical
potential is -
correct answer ✅positive due to electrotonic depolarization of the
membrane under the recording electrode
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: -
correct answer ✅median and posterior tibial nerves
An advantage of referential, as opposed to bipolar recording of
spinal cord somatosensory evoked potentials, is -
correct answer ✅avoiding cancellation of the potentials as a result
of recording from adjacent levels
What is the main advantage of asynchronous bilateral stimulation?
-
correct answer ✅Differentiation of local vs. systemic effects
