EEG Study Guide for registry (ASET Review
Questions) With Correct Answers
The basic unit for measuring current flow is? - CORRECT ANSWER✔✔-
| | | | | | | | | |
Ampere
The basic unit of resistance? - CORRECT ANSWER✔✔-Ohm
| | | | | | |
Which of the following is not a valid expression of Ohm's law?
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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 - CORRECT ANSWER✔✔-A. R=EI or R=VI
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Which of the following is not a unit for measuring alternating
| | | | | | | | | | |
frequencies?
A. Cycles per sec
| | |
B. Volts
|
C. Hertz
|
D. Kilocycles - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-D. stores energy
| | | | | | |
What is a filter? - CORRECT ANSWER✔✔-A circuit that allows some
| | | | | | | | | | |
frequencies to pass through it, while others are blocked | | | | | | | |
What is an amplifier? - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-D. noise
| | | | |
The EEG amplifier is designed so that when input 1 is more negative
| | | | | | | | | | | | |
then input 2, the deflection will be? - CORRECT ANSWER✔✔-Upward
| | | | | | | | |
,What is common mode rejection? - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-D. 0.1hz
| | | | |
Time constant is defined as the time required - - CORRECT ANSWER✔✔-
| | | | | | | | | | |
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? - CORRECT ANSWER✔✔-40%
| | | | | |
According to ACNS Guidelines, recording clinical EEG on digital media
| | | | | | | | | |
requires monitors to have? - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-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. - CORRECT ANSWER✔✔-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________ - CORRECT ANSWER✔✔-
| | | | | | | | |
10hz
Questions) With Correct Answers
The basic unit for measuring current flow is? - CORRECT ANSWER✔✔-
| | | | | | | | | |
Ampere
The basic unit of resistance? - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-D. stores energy
| | | | | | |
What is a filter? - CORRECT ANSWER✔✔-A circuit that allows some
| | | | | | | | | | |
frequencies to pass through it, while others are blocked | | | | | | | |
What is an amplifier? - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-D. noise
| | | | |
The EEG amplifier is designed so that when input 1 is more negative
| | | | | | | | | | | | |
then input 2, the deflection will be? - CORRECT ANSWER✔✔-Upward
| | | | | | | | |
,What is common mode rejection? - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-D. 0.1hz
| | | | |
Time constant is defined as the time required - - CORRECT ANSWER✔✔-
| | | | | | | | | | |
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? - CORRECT ANSWER✔✔-40%
| | | | | |
According to ACNS Guidelines, recording clinical EEG on digital media
| | | | | | | | | |
requires monitors to have? - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-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. - CORRECT ANSWER✔✔-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________ - CORRECT ANSWER✔✔-
| | | | | | | | |
10hz
