Page |1
ABRET BOARD EXAM 2025/2026 NEWEST ACTUAL EXAM
WITH COMPLETE QUESTIONS AND VERIFIED ANSWERS
|ALREADY GRADED A+|
In a referential montage with Cz as the reference what is the most
valuable localizing feature?
A. Phase reversal
B. Highest voltage discharge
C. In phase cancellation
D. Common mode rejection - ANSWER-B. Highest voltage
discharge
In an EEG instrument what component transforms alternating
current into direct current?
A. The input cable
B. The galvanometers
C. The A to D converter
D. The power supply - ANSWER-D. The power supply
What kind of amplifiers are used to record biological signals?
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A. bifurcated
B. referential
C. bipolar
D. differential - ANSWER-D. differential
An EEG instrument's common mode rejection ratio should be
______:
a. very high
b. very low
c. as close to "0" as possible
d. equal to the input impedance - ANSWER-a. very high
Of the following filter combinations, which would best record
3/second spike and slow wave discharges:
a. HFF 15Hz/LFF 5Hz
b. HFF 35Hz/LFF 5Hz
c. HFF 70Hz/LFF 1Hz
d. HFF 35Hz/LFF 0.5Hz - ANSWER-c. HFF 70Hz/LFF 1Hz
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How would a 15Hz HFF affect 15Hz sleep spindles:
a. decrease amplitude by 30%
b. no change in amplitude
c. decrease amplitude by 70%
d. boost amplitude by 10% - ANSWER-a. decrease amplitude by
30%
How much voltage would be recorded is 25 uV beta activity is
recorded using a LFF of 1 Hz
A. 1 Uv
B. 7.5 uV
C. 17.5 uV
D. 25 uV - ANSWER-D. 25 uV
A longer time constant results in _____:
a. more slow frequencies recorded
b. more slow frequencies attenuated
c. the time base, epoch, analysis time, equivalent paper speed is
extended
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d. the amplifier Lismore responsive to fast frequencies -
ANSWER-a. more slow frequencies recorded
A short time constant results in:
a. increase in fast frequencies
b. decrease in fast frequencies
c. increase in slow activity
d. decrease in slow activity - ANSWER-d. decrease in slow
activity
Rapid, involuntary, jerky arrhythmic movements of muscle groups,
that can be generalized, symmetric, asymmetric or unilateral
describes what disorder?
A. Myelopathy
B. Guillain-Barre Syndrome
C. Chorea
D. Leukoencephalopathy - ANSWER-C. Chorea
ABRET BOARD EXAM 2025/2026 NEWEST ACTUAL EXAM
WITH COMPLETE QUESTIONS AND VERIFIED ANSWERS
|ALREADY GRADED A+|
In a referential montage with Cz as the reference what is the most
valuable localizing feature?
A. Phase reversal
B. Highest voltage discharge
C. In phase cancellation
D. Common mode rejection - ANSWER-B. Highest voltage
discharge
In an EEG instrument what component transforms alternating
current into direct current?
A. The input cable
B. The galvanometers
C. The A to D converter
D. The power supply - ANSWER-D. The power supply
What kind of amplifiers are used to record biological signals?
, Page |2
A. bifurcated
B. referential
C. bipolar
D. differential - ANSWER-D. differential
An EEG instrument's common mode rejection ratio should be
______:
a. very high
b. very low
c. as close to "0" as possible
d. equal to the input impedance - ANSWER-a. very high
Of the following filter combinations, which would best record
3/second spike and slow wave discharges:
a. HFF 15Hz/LFF 5Hz
b. HFF 35Hz/LFF 5Hz
c. HFF 70Hz/LFF 1Hz
d. HFF 35Hz/LFF 0.5Hz - ANSWER-c. HFF 70Hz/LFF 1Hz
, Page |3
How would a 15Hz HFF affect 15Hz sleep spindles:
a. decrease amplitude by 30%
b. no change in amplitude
c. decrease amplitude by 70%
d. boost amplitude by 10% - ANSWER-a. decrease amplitude by
30%
How much voltage would be recorded is 25 uV beta activity is
recorded using a LFF of 1 Hz
A. 1 Uv
B. 7.5 uV
C. 17.5 uV
D. 25 uV - ANSWER-D. 25 uV
A longer time constant results in _____:
a. more slow frequencies recorded
b. more slow frequencies attenuated
c. the time base, epoch, analysis time, equivalent paper speed is
extended
, Page |4
d. the amplifier Lismore responsive to fast frequencies -
ANSWER-a. more slow frequencies recorded
A short time constant results in:
a. increase in fast frequencies
b. decrease in fast frequencies
c. increase in slow activity
d. decrease in slow activity - ANSWER-d. decrease in slow
activity
Rapid, involuntary, jerky arrhythmic movements of muscle groups,
that can be generalized, symmetric, asymmetric or unilateral
describes what disorder?
A. Myelopathy
B. Guillain-Barre Syndrome
C. Chorea
D. Leukoencephalopathy - ANSWER-C. Chorea
