ABRET EEG EXAM PART 2 Questions and
Answers
which of the following extra electrodes might best demonstrate
the EEG activity associated with focal motor twitching of the right
corner of the mouth?
Ans: C5
sphenoidal electrodes are used to record activity from the
Ans: anterior temporal lobes
what additional electrodes could be placed to help decipher
between artifact and cortical activity
Ans: EOG electrodes
what type of monitoring would be useful in an EEG with a patient
experiencing syncope?
Ans: ECG
an abbreviated 10-20 placement, respiration, ECG and EOG
monitors should be used when recording
Ans: neonates
what additional monitoring should be done in a middle age
patient who repeatedly alerts from sleep during the EEG?
Ans: Respiration
brain abscess
Ans: focal polymorphic delta activity
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Cortical EEG recordings can be obscured in patients who are tense
and anxious due to
Ans: myogenic artifact
which combination of settings will help enhance a low voltage
slow wave that is being masked by muscle activity?
Ans: Sen 5; LF .3; HF 35
to enhance the background alpha and beta asymmetry in an EEG
record showing moderately high voltage delta activity, the tech
should use a
Ans: shorter time constant and increased sensitivity
A waveform of 0.5 Hz can be best enhanced with a filter of
Ans: LF 0.3 Hz
of the following, the BEST choice of reference to be used when
recording in suspected temporal lobe epilepsy is
Ans: CZ
Which montage would be best to localize occipital spikes by phase
reversal?
Ans: circumferential bipolar montage
When using the average reference, if a spike-and-wave focus
appears at C3, the abnormality would be best enhanced by
Ans: excluding C3 and surrounding electrodes from reference
which of the following montages would best display the
amplitude of a left temporal spike
Ans: left temporal to the contralateral ear
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, 3 | Page
when attempting to minimize relentless muscle artifact on a
recording, the tech should be aware that lowering the high filter
could cause the artifact to resemble
Ans: beta activity
Referential recording is most appropriate for measuring
Ans: voltage
which of the following settings could be used to reduce the
effects of sweat artifact in a patient with asymmetrical low-voltage
fast activity?
Ans: -S = 5 microvolts/mm
-LF = 5 Hz
-HF = 70 Hz
which of the following is the most appropriate instrumentation
setting change that should be made in order to enhance cortical
slowing?
Ans: Change the LFF from 1 Hz to .1 Hz
Fourteen and six Hz positive spikes are best recorded with
Ans: the contralateral ear reference
The best reference electrode in an awake patient with excessive
temporal myogenic activity would be
Ans: Cz
A slow wave focus is best seen with
Ans: LF 0.3 Hz, paper speed 15 mm/sec
Laplacian montage
Ans: source reference derivation
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