CLTM TEST PAPER 2026/2027 QUESTIONS AND
SOLUTIONS RATED A+
✔✔phase reversal in identifying central sulcus must occur within how long of the original
stim in order to prove phase reversal - ✔✔within 2 msec
✔✔what is the appropriate anesthetic regimen for language mapping - ✔✔awake with
local
✔✔purpose of bilateral mesial temporal depth electrodes - ✔✔to lateralize hippocampal
seizure focus
✔✔stereotactic frames - ✔✔used to place depth electrodes
✔✔Responsive neurostimulator (RNS) - ✔✔- Small battery powered device implanted
into skull
- connects to deep brain areas
- Records, monitors brain activity and delivers electrical pulses when it detects pre-
seizure activity
✔✔functional mapping of the eloquent cortex includes - ✔✔motor
sensory
language
✔✔best electrodes to record focal discharges in Sturge-Weber - ✔✔sub-occipital
✔✔direct cortical stimulation involves looking for what waveforms - ✔✔N20/P22
✔✔with the 10/10 system, what is the intermediate chain between frontopolar and
frontal - ✔✔anterior frontal
✔✔relative to P7, where is the P9 electrode in the 10/10 - ✔✔10% lateral to P7
✔✔most common spacing of electrode disks on a 4pt intracranial strip - ✔✔1 cm
✔✔stere EEG electrodes (MRI compatible) are made of what - ✔✔nikel-chromium
composite
✔✔strip/grid electrodes are separated by what inter-electrode distance - ✔✔0.5-1 cm
✔✔what material are strip/grid electrodes made of - ✔✔stainless steel or platinum
✔✔possible side effect of foramen ovale electrodes - ✔✔facial numbness
, ✔✔cortical responses recorded over the supplementary motor cortex to median nerve
SSEP is what type of response - ✔✔positive nearfield response
✔✔subdural electrodes record from - ✔✔cerebral cortex
✔✔subdural electrodes are made of - ✔✔platinum
✔✔intracranial monitoring is performed with electrodes made of - ✔✔platinum
✔✔computers used for EEG acquisition should have what - ✔✔quantitative EEG
analysis capability
✔✔most feared complication of intracranial electrode placement - ✔✔hemorrhage
✔✔(ACNS) montage design for LTME is intended to clearly separate activity from
where - ✔✔the basal temporal and 10/20 cortical derivations
✔✔minimum number of EEG channels for LTME (ACNS) - ✔✔32-64 channels
✔✔filters for LTME (ACNS) - ✔✔LFF .5 Hz- HFF 70 Hz
✔✔treatment for SE should begin after - ✔✔5 minutes
✔✔the reference electrode for localization of the sensorimotor cortex is placed where -
✔✔contralateral scalp or ear
✔✔SE can result in neuronal injury and function deficits after how long - ✔✔30 minutes
✔✔in neonates, when AEDs are given, what happens on vEEG when electroclinical
uncoupling occurs - ✔✔subclinical seizures continue
✔✔basic characterization of epileptic EEG events require - ✔✔18 channels
✔✔what population of neonates are good candidates for LTM - ✔✔those at high risk for
acute brain injury
✔✔LPD + R - ✔✔lateralized periodic discharges plus superimposed rhythmic activity
✔✔SI - ✔✔stimulus induced
✔✔ACNS recommends LTM for neonates in what condition - ✔✔-CNS injury
-post heart surgery
-HIE
SOLUTIONS RATED A+
✔✔phase reversal in identifying central sulcus must occur within how long of the original
stim in order to prove phase reversal - ✔✔within 2 msec
✔✔what is the appropriate anesthetic regimen for language mapping - ✔✔awake with
local
✔✔purpose of bilateral mesial temporal depth electrodes - ✔✔to lateralize hippocampal
seizure focus
✔✔stereotactic frames - ✔✔used to place depth electrodes
✔✔Responsive neurostimulator (RNS) - ✔✔- Small battery powered device implanted
into skull
- connects to deep brain areas
- Records, monitors brain activity and delivers electrical pulses when it detects pre-
seizure activity
✔✔functional mapping of the eloquent cortex includes - ✔✔motor
sensory
language
✔✔best electrodes to record focal discharges in Sturge-Weber - ✔✔sub-occipital
✔✔direct cortical stimulation involves looking for what waveforms - ✔✔N20/P22
✔✔with the 10/10 system, what is the intermediate chain between frontopolar and
frontal - ✔✔anterior frontal
✔✔relative to P7, where is the P9 electrode in the 10/10 - ✔✔10% lateral to P7
✔✔most common spacing of electrode disks on a 4pt intracranial strip - ✔✔1 cm
✔✔stere EEG electrodes (MRI compatible) are made of what - ✔✔nikel-chromium
composite
✔✔strip/grid electrodes are separated by what inter-electrode distance - ✔✔0.5-1 cm
✔✔what material are strip/grid electrodes made of - ✔✔stainless steel or platinum
✔✔possible side effect of foramen ovale electrodes - ✔✔facial numbness
, ✔✔cortical responses recorded over the supplementary motor cortex to median nerve
SSEP is what type of response - ✔✔positive nearfield response
✔✔subdural electrodes record from - ✔✔cerebral cortex
✔✔subdural electrodes are made of - ✔✔platinum
✔✔intracranial monitoring is performed with electrodes made of - ✔✔platinum
✔✔computers used for EEG acquisition should have what - ✔✔quantitative EEG
analysis capability
✔✔most feared complication of intracranial electrode placement - ✔✔hemorrhage
✔✔(ACNS) montage design for LTME is intended to clearly separate activity from
where - ✔✔the basal temporal and 10/20 cortical derivations
✔✔minimum number of EEG channels for LTME (ACNS) - ✔✔32-64 channels
✔✔filters for LTME (ACNS) - ✔✔LFF .5 Hz- HFF 70 Hz
✔✔treatment for SE should begin after - ✔✔5 minutes
✔✔the reference electrode for localization of the sensorimotor cortex is placed where -
✔✔contralateral scalp or ear
✔✔SE can result in neuronal injury and function deficits after how long - ✔✔30 minutes
✔✔in neonates, when AEDs are given, what happens on vEEG when electroclinical
uncoupling occurs - ✔✔subclinical seizures continue
✔✔basic characterization of epileptic EEG events require - ✔✔18 channels
✔✔what population of neonates are good candidates for LTM - ✔✔those at high risk for
acute brain injury
✔✔LPD + R - ✔✔lateralized periodic discharges plus superimposed rhythmic activity
✔✔SI - ✔✔stimulus induced
✔✔ACNS recommends LTM for neonates in what condition - ✔✔-CNS injury
-post heart surgery
-HIE
