R.EEG.T TEST REVIEW
left temporal to contralateral ear - answer what montage would best display the
amplitude of a left temporal spike?
LF 0.3 hz - answer a waveform of 0.5 hz can best be enhanced with a filter of?
excluding C3 and surrounding electrodes from reference - answer when using average
reference is a spike-and-wave focus appears at c3, the abnormality would best be
enhanced by
LF 0.3 hz, paper speed 15mm/sec - answer a slow wave focus is best seen with
voltage - answer referential recording is most appropriate for measuring
cz - answer the best reference electrode in an awake patient with excessive temporal
myogenic activity would be
beta activity - answer when attempting to minimize relentless muscle artifact on a
recording, the technologist should be aware that lowering the high filter could cause the
artifact to resemble?
sensitivity at 5, low filter at .3, high filter at 35 - answerwhich combination of settings will
help enhance a low voltage slow wave that is being masked by muscle activity?
the contralateral ear reference - answer14 and 6 hz positive spikes are best recorded
with
source reference derivation - answerlaplacian montage
Phase reversal - answerWhen localizing in a bipolar montage what do you get?
Change the LFF from 1 hz to 1 hz - answerWhich of the following is the most
appropriate instrumentation setting change that should be made in order to enhance
cortical slowing?
S= 5 microvolts/mm, LF= 5 hz, HF= 70 hz - answerWhich settings could be used to
reduce the effects of sweat artifact in a patient with asymmetrical low-voltage fast
activity?
Circumferential bipolar montage - answerWhich montage would be best to localize
occipital spikes by phase reversal?
, Shorter time constant and increased sensitivity - answerTo enhance the background
alpha and beta asymmetry in an eeg record showing moderately high voltage delta
activity, the technologist should use a
Cz - answerThe best choice of reference to be used when recording in suspected
temporal lobe epilepsy is
14 hz - answerWhat is the most common frequency of sleep spindles?
Left anterior temporal delta activity - answerEEG signs of normal drowsiness (NREM
stage 1/N1 sleep) include all of the following except:
sleep spindles - answerNREM Stage 1 (N1) sleep is characterized by all of the following
except:
Can be present during arousal state transitions, both prior to sleep and onset and
following arousal - answerHypnagogic hypersynchrony
2-6 years old - answerAt what age range is hypnagogic hypersynchrony most
prominent?
90 minutes - answerTypically the latency to REM is:
K complexes - answerThis wave form is caused by an arousal
Stage 1 sleep - answerSharp waves located at the vertex first indicate what state?
Stage 1-2 sleep - answerSmall sharp spikes (SSS)
Sleep spindles - answerStage N2 (stage 2) sleep is characterized by the presence of
Sleep spindles - answerLow amplitude 11-14 hz, 1-2 sec duration, maximal in central
regions
90 minutes after sleep onset - answerREM onset occurs
Elderly patients - answerSleep spindles may be more irregular or of lower voltage in:
Central - answerVertex waves
POSTS - answerThese sharply contoured, surface positive transients typically occur in
runs of 2-4 hz in the occipital regions during N1 (drowsiness) and persist into N2 (stage
2) sleep but usually disappear in subsequent stages
K complex - answerWhat waveform is seen in stage 2 sleep and during arousals, and
contains 3 components: sharp, slow, and fast?
left temporal to contralateral ear - answer what montage would best display the
amplitude of a left temporal spike?
LF 0.3 hz - answer a waveform of 0.5 hz can best be enhanced with a filter of?
excluding C3 and surrounding electrodes from reference - answer when using average
reference is a spike-and-wave focus appears at c3, the abnormality would best be
enhanced by
LF 0.3 hz, paper speed 15mm/sec - answer a slow wave focus is best seen with
voltage - answer referential recording is most appropriate for measuring
cz - answer the best reference electrode in an awake patient with excessive temporal
myogenic activity would be
beta activity - answer when attempting to minimize relentless muscle artifact on a
recording, the technologist should be aware that lowering the high filter could cause the
artifact to resemble?
sensitivity at 5, low filter at .3, high filter at 35 - answerwhich combination of settings will
help enhance a low voltage slow wave that is being masked by muscle activity?
the contralateral ear reference - answer14 and 6 hz positive spikes are best recorded
with
source reference derivation - answerlaplacian montage
Phase reversal - answerWhen localizing in a bipolar montage what do you get?
Change the LFF from 1 hz to 1 hz - answerWhich of the following is the most
appropriate instrumentation setting change that should be made in order to enhance
cortical slowing?
S= 5 microvolts/mm, LF= 5 hz, HF= 70 hz - answerWhich settings could be used to
reduce the effects of sweat artifact in a patient with asymmetrical low-voltage fast
activity?
Circumferential bipolar montage - answerWhich montage would be best to localize
occipital spikes by phase reversal?
, Shorter time constant and increased sensitivity - answerTo enhance the background
alpha and beta asymmetry in an eeg record showing moderately high voltage delta
activity, the technologist should use a
Cz - answerThe best choice of reference to be used when recording in suspected
temporal lobe epilepsy is
14 hz - answerWhat is the most common frequency of sleep spindles?
Left anterior temporal delta activity - answerEEG signs of normal drowsiness (NREM
stage 1/N1 sleep) include all of the following except:
sleep spindles - answerNREM Stage 1 (N1) sleep is characterized by all of the following
except:
Can be present during arousal state transitions, both prior to sleep and onset and
following arousal - answerHypnagogic hypersynchrony
2-6 years old - answerAt what age range is hypnagogic hypersynchrony most
prominent?
90 minutes - answerTypically the latency to REM is:
K complexes - answerThis wave form is caused by an arousal
Stage 1 sleep - answerSharp waves located at the vertex first indicate what state?
Stage 1-2 sleep - answerSmall sharp spikes (SSS)
Sleep spindles - answerStage N2 (stage 2) sleep is characterized by the presence of
Sleep spindles - answerLow amplitude 11-14 hz, 1-2 sec duration, maximal in central
regions
90 minutes after sleep onset - answerREM onset occurs
Elderly patients - answerSleep spindles may be more irregular or of lower voltage in:
Central - answerVertex waves
POSTS - answerThese sharply contoured, surface positive transients typically occur in
runs of 2-4 hz in the occipital regions during N1 (drowsiness) and persist into N2 (stage
2) sleep but usually disappear in subsequent stages
K complex - answerWhat waveform is seen in stage 2 sleep and during arousals, and
contains 3 components: sharp, slow, and fast?
