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ABRET EEG Exam Review Questions With All Correct Answers (100% Verified)
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ABRET EEG Exam Review Questions With All Correct Answers (100% Verified)
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ABRET EEG Exam Review Questions II II II IIWith All Correct Answers (100% II II II II II
Verified) II
The basic unit for measuring current flow is____
II II II II II II II
a.atomic weight II
b.Coulomb
c.Volt
d.Ampere - Ampere II II
The basic unit of resistance is____.
II II II II II
a.Ohm
b.Coulomb
c.Ampere
d.Volt - Ohm II II
Which of the following is not a valid expression of Ohm's law?
II II II II II II II II II II II II
(in this equation E (electromotive force) is the dame as V (Voltage)
II II II II II II II II II II II II
a. R = E I or (R = V I)
II II II II II II II II II II
b. E = I R or (V = I R)
II II II II II II II II II II
c. I = E / R or (I = V/R)
II II II II II II II II II II
d. R = E / I or (R = V/ I) - R = E I or (R = V I)
II II II II II II II II II II II II II II II II II II II II
Which of the following is not a unit for measuring alternating frequencies?
II II II II II II II II II II II II
a. Cycles per second
II II II II
b. Volts II II
c. Hertz
II II
d. Kilocycles - Volts
II II II
Which of the following describes the action of a capacitor?
II II II II II II II II II II
a. opposes changes in current flow
II II II II II II
b. converts alternating current to direct current
II II II II II II II
c. creates a direct current resistance
II II II II II II
d. stores energy - stores energy
II II II II II
A circuit that allows some frequencies to pass through it, while others are blocked is
II II II II II II II II II II II II II II
a ____.
II II II
a. resistor
II II
b. transistor
II II
c. filter
II II
d. reactor - filter
II II II
,A combination of electronic components designed to increase the power, voltage or
II II II II II II II II II II II
current of a signal
II II II II II
a. amplifier
II II
b. line filter
II II II
c. master gain control
II II II II
d. sensitivity - amplifier
II II II
A small fluctuating output recorded by the EEG instrument even when there is no
II II II II II II II II II II II II II
input signal is called ____.
II II II II II II
a. output voltage
II II II
b. linear distortion
II II II
c. 60 Hz interference
II II II II
d. noise - noise
II II II
The EEG amplifier is designed so that when input 1 is more negative than input 2, the
II II II II II II II II II II II II II II II II
deflection will be ____.
II II II II II
a. downward
II II
b. upward II II
c. absent
II II
d. sinusoidal - upward
II II II
Common Mode Rejection is ____. II II II II II
a. the ability of an amplifier to cancel out ECG artifact
II II II II II II II II II II II
b. the characteristic of an amplifier that rejects external interference
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c. is dependent on the sampling rate
II II II II II II II
d. controlled by the 60-cycle notch filter - the characteristic of an amplifier that
II II II II II II II II II II II II II
rejects external interference
II II II
Which of the following is most attenuated by a low frequency filter of 1 Hz?
II II II II II II II II II II II II II II II
a. 0.5 Hz
II II II
b. 5.0 Hz II II II
c. 10.0 Hz
II II II
d. 0.1 Hz - 0.1 Hz
II II II II II
Time constant is defined as the time required ____.
II II II II II II II II II
a. for the deflection to fall (decay) to 47% of the peak deflection
II II II II II II II II II II II II II
b. for the deflection to fall (decay) 57% of the peak deflection
II II II II II II II II II II II II
c. for the deflection to fall (decay) 77% of the peak deflection
II II II II II II II II II II II II
d. for the deflection to fall (decay) to 37% of the peak deflection - for the deflection
II II II II II II II II II II II II II II II II
to fall (decay) to 37% of the peak deflection
II II II II II II II II II
An EEG record has three per second spike/wave discharges. Both the spike and the
II II II II II II II II II II II II II
slow wave have voltages of 100 µV. If this discharge is recorded with a low
II II II II II II II II II II II II II II II
frequency filter of 5 Hz and a sensitivity of 10 µV/mm, what would be the deflection
II II II II II II II II II II II II II II II II
of the spike and the
II II II II II II
,wave? II
a. spike 10 mm, wave 6 mm
II II II II II II II
b. spike 6 mm, wave 10 mm
II II II II II II II
c. spike 10mm, wave 10 mm
II II II II II II
d. spike 6 mm, wave 6 mm - spike 10 mm, wave 6 mm
II II II II II II II II II II II II II
A high frequency setting of 35 Hz would attenuate 50 Hz muscle activity by
II II II II II II II II II II II II II
approximately what percentage?
II II II II
a. 10%II II
b. 20% II II
c. 40%
II II
d. 100% - 40%
II II II
According to ACNS Guidelines, Recording Clinical EEG on Digital Media requires
II II II II II II II II II II
monitors to have _____.
II II II II II
a. Between 25 and 35 mm/second horizontal scaling and a maximum of 1000 data
II II II II II II II II II II II II II
points/second to accurately display EEG on the monitor screen.
II II II II II II II II II II
b. Between 25 and 35 mm/second horizontal scaling and a minimum of 100 data
II II II II II II II II II II II II II
points /second to accurately display EEG on the monitor screen.
II II II II II II II II II II II
c. Between 25 and 35 mm/second horizontal scaling and a maximum of 100 data
II II II II II II II II II II II II II
points/second to accurately display EEG on the monitor screen.
II II II II II II II II II II
d. Between 25 and 35 mm/second horizontal scaling and a minimum of 1000 data
II II II II II II II II II II II II II
points/second to accurately display EEG on the monitor screen. - Between 25 and 35
II II II II II II II II II II II II II II
mm/second horizontal scaling and a minimum of 100 data points /second to
II II II II II II II II II II II II
accurately display EEG on the monitor screen.
II II II II II II II
The filters creating a very narrow band pass that should rarely be used clinically are
II II II II II II II II II II II II II II
_____.
II II
a. LF 5.0 Hz and HF 70 Hz
II II II II II II II II
b. LF 5.0 Hz and HF 15 Hz
II II II II II II II II
c. LF 0.1 Hz and HF 70 Hz
II II II II II II II II
d. LF 0.1 Hz and HF 15 Hz - LF 5.0 Hz and HF 15 Hz
II II II II II II II II II II II II II II II
During the recording of cerebral activity, the calibration input voltage is changed
II II II II II II II II II II II
from 50 µV to 100 µV. What will be the result?
II II II II II II II II II II II II
a. no effect on the activity being recorded
II II II II II II II II
b. a two-fold increase in amplitude
II II II II II II
c. a one-half reduction of amplitude
II II II II II II
d. clipping of the waveform - no effect on the activity being recorded
II II II II II II II II II II II II
A spike is printed out on paper and measures 16 mm peak to peak, the sensitivity of
II II II II II II II II II II II II II II II II
the instrument is 7 µV/mm and a calibration signal of 50 µV causes a deflection of
II II II II II II II II II II II II II II II II
7.1 mm. What is the voltage of the spike?
II II II II II II II II II II
a. 1.2 µV
II II II
b. 112 µV II II II
c. 12 µV
II II II
, d. 24 µV - 112 µV
II II II II II
What input voltage is necessary to give a calibration deflection between 5 and 10
II II II II II II II II II II II II II
mm if the sensitivity is 30µV/mm?
II II II II II II II
a. 10µV
II II
b. 50µV
II II
c. 100µV
II II
d. 200µV - 200µV
II II II
According the ACNS Guidelines 2006, the minimum sampling rate for EEG data,
II II II II II II II II II II II
should be at least _____ times the highest high frequency filter setting.
II II II II II II II II II II II II II
a. twoII II
b. three
II II
c. four
II II
d. ten - three
II II II
In a record with 10 Hz alpha activity. When the display epoch is changed from 10
II II II II II II II II II II II II II II II
seconds per display screen to 20 seconds per display screen, the frequency of the
II II II II II II II II II II II II II II
activity will be ____.
II II II II II
a. 5 Hz
II II II
b. 15 Hz
II II II
c. 20 Hz
II II II
d. 10 Hz - 10 Hz
II II II II II
Channel A in the figure above has been recorded utilizing standard instrumentation
II II II II II II II II II II II
settings. What instrument change has been made to channel B?
II II II II II II II II II II II
a. Display epoch length
II II II II
b. Decrease low frequency filter
II II II II II
c. Increase high frequency filter
II II II II II
d. Sensitivity - Decrease low frequency filter
II II II II II II
Guidelines for recording digital EEG are written by:
II
II II II II II II II II
a. the American Society of Electroneurodiagnostic Technologists (ASET)
II II II II II II II II
b. The American Academy of Neurology (AAN)
II II II II II II II
c. The American Clinical Neurphysiology Society (ACNS)
II II II II II II II
d. The Organization of Societies of Electrophysiological Technology (OSET) - The
II II II II II II II II II II
American Clinical Neurphysiology Society (ACNS)
II II II II II
The term RAM means:
II II II II
a. read only memory used for archiving data
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b. the amount of data that can be stored on a rewritable CD
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c. the amount of data that can be stored on a DVD
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d. temporary memory storage that is critical to rapid computer operations -
II II II II II II II II II II II
temporary memory storage that is critical to rapid computer operations
II II II II II II II II II II
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