EEG Study Guide for registry (ASET Review
Questions) Questions With Solutions
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
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.
,EEG Study Guide for registry (ASET Review
Questions) Questions With Solutions
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
,EEG Study Guide for registry (ASET Review
Questions) Questions With Solutions
D. .1hz D. 0.1hz
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
, EEG Study Guide for registry (ASET Review
Questions) Questions With Solutions
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
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
Questions) Questions With Solutions
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
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.
,EEG Study Guide for registry (ASET Review
Questions) Questions With Solutions
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
,EEG Study Guide for registry (ASET Review
Questions) Questions With Solutions
D. .1hz D. 0.1hz
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
, EEG Study Guide for registry (ASET Review
Questions) Questions With Solutions
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
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
