1|Page
EEG Study Guide for registry (ASET
Review Questions) with Correct
Answers
The basic unit for measuring current flow is? - ✔✔Ampere
The basic unit of resistance? - ✔✔Ohm
Which of the following is not a valid expression of Ohm's law?
A. R=EI or R=VI
B. E=IR or V=IR
C. I=E/R or I=V/R
D. R=E/I or R=V/I - ✔✔A. R=EI or R=VI
Which of the following is not a unit for measuring alternating frequencies?
A. Cycles per sec
B. Volts
C. Hertz
D. Kilocycles - ✔✔B. Volts
Which of the following describes the action of a capacitor?
A. opposes changes in current flow
Author. Emily Charlene, ©2025 All Rights Reserved.
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B. converts alternating current to direct current
C. creates direct current resistance
D. stores energy - ✔✔D. stores energy
What is a filter? - ✔✔A circuit that allows some frequencies to pass through it, while others are blocked
What is an amplifier? - ✔✔A combination of electronic components designed to increase the power,
voltage or current of a signal.
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. 60Hz interference
d. noise - ✔✔D. noise
The EEG amplifier is designed so that when input 1 is more negative then input 2, the deflection will be? -
✔✔Upward
What is common mode rejection? - ✔✔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. .5hz
B. 5hz
C. 10 hz
D. .1hz - ✔✔D. 0.1hz
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Time constant is defined as the time required - - ✔✔for the deflection to fall (decay) to 37% of the peak
deflection.
A high frequency setting of 35hz would attenuate 50hz muscle activity by approximately what
percentage? - ✔✔40%
According to ACNS Guidelines, recording clinical EEG on digital media requires monitors to have? -
✔✔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 filter creating a very narrow band pass that should rarely be used clinically-
a. LF 5.0 and HF 70hz
b. LF 5.0 and HF 15hz
c. LF 0.1 and HF 70hz
d. LF 0.1 and HF 15hz - ✔✔B. LF 5.0 and HF 15hz
During the recording of cerebral activity, the calibration input voltage is changed from 50uv to 100uv.
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 - ✔✔A. no effect on the activity being recorded
According the ACNS guidelines 2006, the minimum sampling rate for EEG Data, should be at
least____________times the highest high frequency filter setting. - ✔✔Three
Author. Emily Charlene, ©2025 All Rights Reserved.
, 4|Page
In a record with 10hz 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________ - ✔✔10hz
Guidelines for recording digital EEG are written by: - ✔✔The american clinical neurophysiology society
(ACNS)
The term RAM means: - ✔✔TEMPORARY MEMORY STORAGE THAT IS CRITICAL TO RAPID
COMPUTER OPERATIONS
Three basic computer ports are: - ✔✔serial, parallel, usb
The best metals for clinical EEG recording are_________? - ✔✔Silver-silver chloride, platinum or gold
Which of the following is not related to measuring electrode resistance?
A. opposition to direct current flow
B. measurement while the electrode is unattached to the scalp
C. measurement with an ohmmeter
D. opposition to alternating current flow - ✔✔D. opposition to alternating current flow
The electrode site that is located 1cm above, one third the distance out from the left external auditory
meatus toward the left outer canthus is called? - ✔✔T1 or F9
Due to a central scalp lesion, C4 has to be relocated 4mm anteriorly. The technologist should:
a. relocate C3 4mm anteriorly
b. make no other placement changes
c. relocate P3 4mm anteriorly
d. relocate all electrodes in the right parasagittal plane 4mm anteriorly - ✔✔a. relocate C3 4mm anteriorly
Author. Emily Charlene, ©2025 All Rights Reserved.
EEG Study Guide for registry (ASET
Review Questions) with Correct
Answers
The basic unit for measuring current flow is? - ✔✔Ampere
The basic unit of resistance? - ✔✔Ohm
Which of the following is not a valid expression of Ohm's law?
A. R=EI or R=VI
B. E=IR or V=IR
C. I=E/R or I=V/R
D. R=E/I or R=V/I - ✔✔A. R=EI or R=VI
Which of the following is not a unit for measuring alternating frequencies?
A. Cycles per sec
B. Volts
C. Hertz
D. Kilocycles - ✔✔B. Volts
Which of the following describes the action of a capacitor?
A. opposes changes in current flow
Author. Emily Charlene, ©2025 All Rights Reserved.
,2|Page
B. converts alternating current to direct current
C. creates direct current resistance
D. stores energy - ✔✔D. stores energy
What is a filter? - ✔✔A circuit that allows some frequencies to pass through it, while others are blocked
What is an amplifier? - ✔✔A combination of electronic components designed to increase the power,
voltage or current of a signal.
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. 60Hz interference
d. noise - ✔✔D. noise
The EEG amplifier is designed so that when input 1 is more negative then input 2, the deflection will be? -
✔✔Upward
What is common mode rejection? - ✔✔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. .5hz
B. 5hz
C. 10 hz
D. .1hz - ✔✔D. 0.1hz
Author. Emily Charlene, ©2025 All Rights Reserved.
,3|Page
Time constant is defined as the time required - - ✔✔for the deflection to fall (decay) to 37% of the peak
deflection.
A high frequency setting of 35hz would attenuate 50hz muscle activity by approximately what
percentage? - ✔✔40%
According to ACNS Guidelines, recording clinical EEG on digital media requires monitors to have? -
✔✔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 filter creating a very narrow band pass that should rarely be used clinically-
a. LF 5.0 and HF 70hz
b. LF 5.0 and HF 15hz
c. LF 0.1 and HF 70hz
d. LF 0.1 and HF 15hz - ✔✔B. LF 5.0 and HF 15hz
During the recording of cerebral activity, the calibration input voltage is changed from 50uv to 100uv.
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 - ✔✔A. no effect on the activity being recorded
According the ACNS guidelines 2006, the minimum sampling rate for EEG Data, should be at
least____________times the highest high frequency filter setting. - ✔✔Three
Author. Emily Charlene, ©2025 All Rights Reserved.
, 4|Page
In a record with 10hz 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________ - ✔✔10hz
Guidelines for recording digital EEG are written by: - ✔✔The american clinical neurophysiology society
(ACNS)
The term RAM means: - ✔✔TEMPORARY MEMORY STORAGE THAT IS CRITICAL TO RAPID
COMPUTER OPERATIONS
Three basic computer ports are: - ✔✔serial, parallel, usb
The best metals for clinical EEG recording are_________? - ✔✔Silver-silver chloride, platinum or gold
Which of the following is not related to measuring electrode resistance?
A. opposition to direct current flow
B. measurement while the electrode is unattached to the scalp
C. measurement with an ohmmeter
D. opposition to alternating current flow - ✔✔D. opposition to alternating current flow
The electrode site that is located 1cm above, one third the distance out from the left external auditory
meatus toward the left outer canthus is called? - ✔✔T1 or F9
Due to a central scalp lesion, C4 has to be relocated 4mm anteriorly. The technologist should:
a. relocate C3 4mm anteriorly
b. make no other placement changes
c. relocate P3 4mm anteriorly
d. relocate all electrodes in the right parasagittal plane 4mm anteriorly - ✔✔a. relocate C3 4mm anteriorly
Author. Emily Charlene, ©2025 All Rights Reserved.
