©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 8:22PM. A+
ABRET Digital Instrumentation. Exam
Questions And Answers |Latest 2025 |
Guaranteed Pass.
A LFF setting of 5 Hz will attenuate a 5 Hz wave by approximately:
a. 0.3
b. 30 mm
c. 0.05
d. 5 mm - Answer✔0.3 (LFF of 5 Hz will attenuate a 5 Hz wave by 30%)
Gradual changes in amplitude , frequency, or spatial distribution of rhythms is known as:
a. asymmetry
b. attenuation
c. background activity
d. evolution - Answer✔evolution
Vertical resolution
a. bits
b. frequencies
c. amplitude
d. duration - Answer✔amplitude
The ability of an amplifier to reject like signals
1|Page
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a. amplifier gain
b. phase reversal
c. common mode rejection
d. sensitivity - Answer✔common mode rejection
Which of the following principles best applies to the EEG amplifiers?
a. aliasing
b. sampling
c. common mode rejection
d. filtering - Answer✔common mode rejection
Increasing the number of seconds displayed on the monitor
a. decreases spike duration
b. increases spike amplitude
c. does not change spike amplitude or duration
d. increases spike duration - Answer✔does not change spike amplitude or duration
Which of the following is the most appropriate sampling rate that should be used for a HFF
setting of 70 Hz, according to Nyquist theory?
a. 20 p/sec
b. 210 p/sec
c. 10 p/sec
d. 140 p/sec - Answer✔140 p/sec (Nyquist theory is 2x the setting, ACNS Guidelines is 3x the
setting)
For low frequency filter (LFF), the corresponding time constants for LFF cutoff frequency of 3 Hz
would be
a. 0.05 sec
2|Page
ABRET Digital Instrumentation. Exam
Questions And Answers |Latest 2025 |
Guaranteed Pass.
A LFF setting of 5 Hz will attenuate a 5 Hz wave by approximately:
a. 0.3
b. 30 mm
c. 0.05
d. 5 mm - Answer✔0.3 (LFF of 5 Hz will attenuate a 5 Hz wave by 30%)
Gradual changes in amplitude , frequency, or spatial distribution of rhythms is known as:
a. asymmetry
b. attenuation
c. background activity
d. evolution - Answer✔evolution
Vertical resolution
a. bits
b. frequencies
c. amplitude
d. duration - Answer✔amplitude
The ability of an amplifier to reject like signals
1|Page
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 8:22PM. A+
a. amplifier gain
b. phase reversal
c. common mode rejection
d. sensitivity - Answer✔common mode rejection
Which of the following principles best applies to the EEG amplifiers?
a. aliasing
b. sampling
c. common mode rejection
d. filtering - Answer✔common mode rejection
Increasing the number of seconds displayed on the monitor
a. decreases spike duration
b. increases spike amplitude
c. does not change spike amplitude or duration
d. increases spike duration - Answer✔does not change spike amplitude or duration
Which of the following is the most appropriate sampling rate that should be used for a HFF
setting of 70 Hz, according to Nyquist theory?
a. 20 p/sec
b. 210 p/sec
c. 10 p/sec
d. 140 p/sec - Answer✔140 p/sec (Nyquist theory is 2x the setting, ACNS Guidelines is 3x the
setting)
For low frequency filter (LFF), the corresponding time constants for LFF cutoff frequency of 3 Hz
would be
a. 0.05 sec
2|Page
