ABCN Sample Questions

ABCN Sample Questions & Key
ABCN Sample Questions
Revised 8/11
1.
Regarding aliasing:
a.
b.
c.
d.
2.
Which of the following is a disadvantage of digital EEG compared to analog (paper) EEG:
a.
b.
c.
d.
3.
Synchrony
Negative-positive-negative deflections
Continuity
Anterior to posterior lag time
Which of the following montages will best demonstrate waves II through V of the BAEP?
a.
b.
c.
d.
6.
an IPSP in superficial cortical dendrites
an EPSP in deep cortical dendrites
an EPSP in superficial cortical dendrites
all of the above
Typical triphasic waves have all the following characteristics except:
a.
b.
c.
d.
5.
Lower cost of storage.
Transferability.
Ease of remontaging.
Alignment of high-amplitude waveforms.
A surface negative EEG wave will result from:
a.
b.
c.
d.
4.
Aliasing occurs when the sampling frequency is too high.
A high-pass filter is least useful in minimizing aliasing.
Filtering has no effect on aliasing.
The frequency content of the signal is does not need to be known.
Cz - contralateral ear
Cz – ipsilateral ear
Ipsilateral ear – contralateral ear
Ipsilateral ear – Fpz
EEG signs of normal drowsiness [NREM Stage 1 (N1) sleep] include
all of the following expect:
a.
b.
c.
d.
alpha activity moves anteriorly
bursts of generalized theta activity
left anterior temporal delta activity
increased beta activity
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ABCN Sample Questions & Key
7.
Of the responses below, which is the best response in describing the EEG findings on the
following invasive EEG done with implanted bilateral anterior and mid temporal subdural strips?
a.
b.
c.
d.
A right hemispheric seizure onset is seen
The pattern is diagnostic of hippocampal onset
The left focal slowing and the right focal seizures indicate a poor surgical
candidate
Clinical features are best when <10 seconds before EEG onset
8.
All of the following statements regarding frontal lobe epilepsy (FLE) are true except:
a.
There is always an ictal EEG correlate to frontal lobe seizures.
b.
In FLE, generalized seizures are usually present, and may be frequent.
c.
There may be minimal post-ictal state.
d.
They often occur in clusters and are nocturnal.
9.
When recording evoked potentials, the changes of high or low analog frequency filters affects:
a.
latency
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ABCN Sample Questions & Key
b.
c.
d.
10.
amplitude
latency and amplitude
periodicity
The voltage of transcranial electric stimulation that is required to elicit motor response is
generally:
a.
b.
c.
d.
less than 10 volts
10 – 20 volts
20 – 200 volts
greater than 200 volts
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ABCN Sample Questions & Key
Answers for Sample Questions
1.
B
2.
B
3.
C
4.
C
5.
A
6.
C
7.
A
8.
A
9.
C
10.
D
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