COMPREHENSIVE EEG BOARD EXAM
STUDY GUIDE QUESTIONS AND
ANSWERS 100% VERIFIED. JUST
RELEASED
1. If Input 1 is -50 microvolts and Input 2 is +20 microvolts, what will the differential amplifier
output be?
A. -30 microvolts
B. +70 microvolts
C. +30 microvolts
D. -70 microvolts
Answer: D
Conceptual Explanation: Differential amplifiers follow the formula: Input 1 minus Input 2.
Therefore, (-50) - (+20) = -70 microvolts.
2. What is the minimum sampling rate required by ACNS guidelines to avoid aliasing for a 70
Hz signal?
A. 70 Hz
B. 140 Hz
C. 210 Hz
,D. 200 Hz
Answer: C
Conceptual Explanation: According to the Nyquist Theorem, the sampling rate must be at
least twice the highest frequency. ACNS guidelines specifically recommend a rate 3 times
the highest frequency (70Hz * 3 = 210Hz) to safely avoid aliasing.
3. Which clinical condition is most strongly associated with 3 Hz spike-and-wave discharges?
A. Absence Seizures
B. Complex Partial Seizures
C. Lennox-Gastaut Syndrome
D. Juvenile Myoclonic Epilepsy
Answer: A
Conceptual Explanation: Generalized 3 Hz spike-and-wave activity is the classic EEG
hallmark of Childhood Absence Epilepsy.
4. A 1-second time constant corresponds to which Low Frequency Filter (LFF) setting?
A. 0.16 Hz
B. 0.5 Hz
C. 1.0 Hz
D. 5.0 Hz
, Answer: A
Conceptual Explanation: The formula relating time constant (TC) to LFF frequency is f = 1
/ (2 * pi * TC). Thus, 1 / (2 * 3.14 * 1) is approximately 0.16 Hz.
5. In the International 10-20 System, what is the distance from Fp1 to Fp2 if the total
circumference is 60 cm?
A. 3 cm
B. 6 cm
C. 10 cm
D. 12 cm
Answer: B
Conceptual Explanation: The distance between Fp1 and Fp2 is 10% of the total
circumference. 10% of 60 cm is 6 cm.
6. Which of the following is an example of a physiological artifact?
A. Glossokinetic potential
B. 60 Hz interference
C. Electrode pop
D. Instrument noise
Answer: A
STUDY GUIDE QUESTIONS AND
ANSWERS 100% VERIFIED. JUST
RELEASED
1. If Input 1 is -50 microvolts and Input 2 is +20 microvolts, what will the differential amplifier
output be?
A. -30 microvolts
B. +70 microvolts
C. +30 microvolts
D. -70 microvolts
Answer: D
Conceptual Explanation: Differential amplifiers follow the formula: Input 1 minus Input 2.
Therefore, (-50) - (+20) = -70 microvolts.
2. What is the minimum sampling rate required by ACNS guidelines to avoid aliasing for a 70
Hz signal?
A. 70 Hz
B. 140 Hz
C. 210 Hz
,D. 200 Hz
Answer: C
Conceptual Explanation: According to the Nyquist Theorem, the sampling rate must be at
least twice the highest frequency. ACNS guidelines specifically recommend a rate 3 times
the highest frequency (70Hz * 3 = 210Hz) to safely avoid aliasing.
3. Which clinical condition is most strongly associated with 3 Hz spike-and-wave discharges?
A. Absence Seizures
B. Complex Partial Seizures
C. Lennox-Gastaut Syndrome
D. Juvenile Myoclonic Epilepsy
Answer: A
Conceptual Explanation: Generalized 3 Hz spike-and-wave activity is the classic EEG
hallmark of Childhood Absence Epilepsy.
4. A 1-second time constant corresponds to which Low Frequency Filter (LFF) setting?
A. 0.16 Hz
B. 0.5 Hz
C. 1.0 Hz
D. 5.0 Hz
, Answer: A
Conceptual Explanation: The formula relating time constant (TC) to LFF frequency is f = 1
/ (2 * pi * TC). Thus, 1 / (2 * 3.14 * 1) is approximately 0.16 Hz.
5. In the International 10-20 System, what is the distance from Fp1 to Fp2 if the total
circumference is 60 cm?
A. 3 cm
B. 6 cm
C. 10 cm
D. 12 cm
Answer: B
Conceptual Explanation: The distance between Fp1 and Fp2 is 10% of the total
circumference. 10% of 60 cm is 6 cm.
6. Which of the following is an example of a physiological artifact?
A. Glossokinetic potential
B. 60 Hz interference
C. Electrode pop
D. Instrument noise
Answer: A
