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