ABRET-EEG Actual Exam Study Questions
with 100% Correct Answers Already
Graded A+ | Brand New Version
1. which of the following extra electrodes might best demonstrate the EEG
activity associated with focal motor twitching of the right corner of the
mouth? - ANSWER C5
2. sphenoidal electrodes are used to record activity from the - ANSWER
anterior temporal lobes
3. what additional electrodes could be placed to help decipher between artifact
and cortical activity - ANSWER EOG electrodes
4. what type of monitoring would be useful in an EEG with a patient
experiencing syncope? - ANSWER ECG
5. Laplacian montage - ANSWER source reference derivation
6. EEG amplifiers work on the principle(s) of - ANSWER differentiation and
amplification
7. Doubling the inter-electrode distances will have what effect on the
waveforms? - ANSWER increase amplitude
8. term used to describe the. way a signal is sampled at intervals and assigned a
numeric value - ANSWER sampling rate
,9. Digital EEG montages are reformatted by using - ANSWER system
reference
10.Input impedance should be - ANSWER very high
11.Low sampling rate may cause fast frequencies to appear slower: -
ANSWER aliasing
12.2016 ACNS guidelines recommends a CMRR of at least: - ANSWER 90
dB
13.which of the following sites is most commonly used for the ground electrode
in EEG - ANSWER Fpz
14.For low frequency filters (LFFs), the corresponding time constants for LFF
cutoff frequency of 3 Hz would be - ANSWER 0.05 seconds
15.frequency response curve - ANSWER filters
16.Vertical resolution - ANSWER amplitude
17.common mode rejection - ANSWER differential amplifier
18.A 0.3 Hz wave would be attenuated by what percentage with a 0.3 Hz filter?
- ANSWER 0.3
19.long time constant - ANSWER LFF of .1 hz
,20.Signals common to both inputs of a differential amplifier with like
frequency, amplitude and phase are: - ANSWER canceled
21.under sampling - ANSWER Aliasing
22.an abbreviated 10-20 placement, respiration, ECG and EOG monitors should
be used when recording - ANSWER neonates
23.what additional monitoring should be done in a middle age patient who
repeatedly alerts from sleep during the EEG? - ANSWER Respiration
24.brain abscess - ANSWER focal polymorphic delta activity
25.Cortical EEG recordings can be obscured in patients who are tense and
anxious due to - ANSWER myogenic artifact
26.which combination of settings will help enhance a low voltage slow wave
that is being masked by muscle activity? - ANSWER Sen 5; LF .3; HF 35
27.to enhance the background alpha and beta asymmetry in an EEG record
showing moderately high voltage delta activity, the tech should use a -
ANSWER shorter time constant and increased sensitivity
28.A waveform of 0.5 Hz can be best enhanced with a filter of - ANSWER LF
0.3 Hz
29.of the following, the BEST choice of reference to be used when recording in
suspected temporal lobe epilepsy is - ANSWER CZ
, 30.Which montage would be best to localize occipital spikes by phase reversal?
- ANSWER circumferential bipolar montage
31.When using the average reference, if a spike-and-wave focus appears at C3,
the abnormality would be best enhanced by - ANSWER excluding C3 and
surrounding electrodes from reference
32.which of the following montages would best display the amplitude of a left
temporal spike - ANSWER left temporal to the contralateral ear
33.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 - ANSWER beta activity
34.Referential recording is most appropriate for measuring - ANSWER voltage
35.which of the following settings could be used to reduce the effects of sweat
artifact in a patient with asymmetrical low-voltage fast activity? -
ANSWER -S = 5 microvolts/mm
-LF = 5 Hz
-HF = 70 Hz
36.which of the following is the most appropriate instrumentation setting
change that should be made in order to enhance cortical slowing? -
ANSWER Change the LFF from 1 Hz to .1 Hz
37.Fourteen and six Hz positive spikes are best recorded with - ANSWER the
contralateral ear reference
with 100% Correct Answers Already
Graded A+ | Brand New Version
1. which of the following extra electrodes might best demonstrate the EEG
activity associated with focal motor twitching of the right corner of the
mouth? - ANSWER C5
2. sphenoidal electrodes are used to record activity from the - ANSWER
anterior temporal lobes
3. what additional electrodes could be placed to help decipher between artifact
and cortical activity - ANSWER EOG electrodes
4. what type of monitoring would be useful in an EEG with a patient
experiencing syncope? - ANSWER ECG
5. Laplacian montage - ANSWER source reference derivation
6. EEG amplifiers work on the principle(s) of - ANSWER differentiation and
amplification
7. Doubling the inter-electrode distances will have what effect on the
waveforms? - ANSWER increase amplitude
8. term used to describe the. way a signal is sampled at intervals and assigned a
numeric value - ANSWER sampling rate
,9. Digital EEG montages are reformatted by using - ANSWER system
reference
10.Input impedance should be - ANSWER very high
11.Low sampling rate may cause fast frequencies to appear slower: -
ANSWER aliasing
12.2016 ACNS guidelines recommends a CMRR of at least: - ANSWER 90
dB
13.which of the following sites is most commonly used for the ground electrode
in EEG - ANSWER Fpz
14.For low frequency filters (LFFs), the corresponding time constants for LFF
cutoff frequency of 3 Hz would be - ANSWER 0.05 seconds
15.frequency response curve - ANSWER filters
16.Vertical resolution - ANSWER amplitude
17.common mode rejection - ANSWER differential amplifier
18.A 0.3 Hz wave would be attenuated by what percentage with a 0.3 Hz filter?
- ANSWER 0.3
19.long time constant - ANSWER LFF of .1 hz
,20.Signals common to both inputs of a differential amplifier with like
frequency, amplitude and phase are: - ANSWER canceled
21.under sampling - ANSWER Aliasing
22.an abbreviated 10-20 placement, respiration, ECG and EOG monitors should
be used when recording - ANSWER neonates
23.what additional monitoring should be done in a middle age patient who
repeatedly alerts from sleep during the EEG? - ANSWER Respiration
24.brain abscess - ANSWER focal polymorphic delta activity
25.Cortical EEG recordings can be obscured in patients who are tense and
anxious due to - ANSWER myogenic artifact
26.which combination of settings will help enhance a low voltage slow wave
that is being masked by muscle activity? - ANSWER Sen 5; LF .3; HF 35
27.to enhance the background alpha and beta asymmetry in an EEG record
showing moderately high voltage delta activity, the tech should use a -
ANSWER shorter time constant and increased sensitivity
28.A waveform of 0.5 Hz can be best enhanced with a filter of - ANSWER LF
0.3 Hz
29.of the following, the BEST choice of reference to be used when recording in
suspected temporal lobe epilepsy is - ANSWER CZ
, 30.Which montage would be best to localize occipital spikes by phase reversal?
- ANSWER circumferential bipolar montage
31.When using the average reference, if a spike-and-wave focus appears at C3,
the abnormality would be best enhanced by - ANSWER excluding C3 and
surrounding electrodes from reference
32.which of the following montages would best display the amplitude of a left
temporal spike - ANSWER left temporal to the contralateral ear
33.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 - ANSWER beta activity
34.Referential recording is most appropriate for measuring - ANSWER voltage
35.which of the following settings could be used to reduce the effects of sweat
artifact in a patient with asymmetrical low-voltage fast activity? -
ANSWER -S = 5 microvolts/mm
-LF = 5 Hz
-HF = 70 Hz
36.which of the following is the most appropriate instrumentation setting
change that should be made in order to enhance cortical slowing? -
ANSWER Change the LFF from 1 Hz to .1 Hz
37.Fourteen and six Hz positive spikes are best recorded with - ANSWER the
contralateral ear reference
