EEG BOARD FINAL EXAM QUESTIONS
AND ANSWERS 100% VERIFIED. JUST
RELEASED
1. If the distance from the Nasion to the Inion is 36 cm, what is the distance from the Nasion
to FpZ?
A. 1.8 cm
B. 3.6 cm
C. 7.2 cm
D. 10% of 36 cm
Answer: B
Conceptual Explanation: In the International 10-20 system, the distance from Nasion to
FpZ is 10% of the total Nasion-Inion distance (0.10 * 36 = 3.6 cm).
2. Which of the following describes the Common Mode Rejection Ratio (CMRR)?
A. The ability of an amplifier to amplify the difference between two inputs.
B. The ratio of the output voltage to the input voltage.
C. The range of frequencies that an amplifier can process without distortion.
D. The ability of an amplifier to reject signals common to both inputs.
,Answer: D
Conceptual Explanation: CMRR is a measure of the differential amplifier’s ability to cancel
out noise that is identical (common) at both Input 1 and Input 2.
3. According to the Nyquist Theorem, what is the minimum sampling rate required for a 70 Hz
signal?
A. 70 Hz
B. 140 Hz
C. 210 Hz
D. 280 Hz
Answer: B
Conceptual Explanation: The Nyquist Theorem states that the sampling rate must be at
least twice the highest frequency component of the signal (2 * 70 = 140 Hz).
4. Which filter setting would most likely cause an artificial phase shift in a slow wave?
A. Low Frequency Filter of 1.0 Hz
B. High Frequency Filter of 70 Hz
C. Low Frequency Filter of 5.0 Hz
D. Notch Filter of 60 Hz
Answer: C
, Conceptual Explanation: Higher LFF settings (shorter time constants) introduce
significant phase lead, which can distort slow wave morphology and timing.
5. A 14-year-old patient displays a 9 Hz posterior dominant rhythm that attenuates with eye-
opening. This is:
A. Abnormal for age
B. Beta rhythm
C. Posterior Slow Waves of Youth
D. Alpha rhythm (Normal)
Answer: D
Conceptual Explanation: A 9 Hz posterior rhythm reactive to eye-opening is a normal
Alpha rhythm for an adolescent.
6. What is the most common EEG correlate of Creutzfeldt-Jakob Disease?
A. 3 Hz spike and wave
B. Periodic Lateralized Epileptiform Discharges (LPDs)
C. Generalized Periodic Discharges (GPDs) at 1-2 Hz
D. Hypsarrhythmia
Answer: C
Conceptual Explanation: CJD is classically associated with generalized periodic sharp
wave complexes occurring at regular intervals of 0.5 to 2 seconds.
AND ANSWERS 100% VERIFIED. JUST
RELEASED
1. If the distance from the Nasion to the Inion is 36 cm, what is the distance from the Nasion
to FpZ?
A. 1.8 cm
B. 3.6 cm
C. 7.2 cm
D. 10% of 36 cm
Answer: B
Conceptual Explanation: In the International 10-20 system, the distance from Nasion to
FpZ is 10% of the total Nasion-Inion distance (0.10 * 36 = 3.6 cm).
2. Which of the following describes the Common Mode Rejection Ratio (CMRR)?
A. The ability of an amplifier to amplify the difference between two inputs.
B. The ratio of the output voltage to the input voltage.
C. The range of frequencies that an amplifier can process without distortion.
D. The ability of an amplifier to reject signals common to both inputs.
,Answer: D
Conceptual Explanation: CMRR is a measure of the differential amplifier’s ability to cancel
out noise that is identical (common) at both Input 1 and Input 2.
3. According to the Nyquist Theorem, what is the minimum sampling rate required for a 70 Hz
signal?
A. 70 Hz
B. 140 Hz
C. 210 Hz
D. 280 Hz
Answer: B
Conceptual Explanation: The Nyquist Theorem states that the sampling rate must be at
least twice the highest frequency component of the signal (2 * 70 = 140 Hz).
4. Which filter setting would most likely cause an artificial phase shift in a slow wave?
A. Low Frequency Filter of 1.0 Hz
B. High Frequency Filter of 70 Hz
C. Low Frequency Filter of 5.0 Hz
D. Notch Filter of 60 Hz
Answer: C
, Conceptual Explanation: Higher LFF settings (shorter time constants) introduce
significant phase lead, which can distort slow wave morphology and timing.
5. A 14-year-old patient displays a 9 Hz posterior dominant rhythm that attenuates with eye-
opening. This is:
A. Abnormal for age
B. Beta rhythm
C. Posterior Slow Waves of Youth
D. Alpha rhythm (Normal)
Answer: D
Conceptual Explanation: A 9 Hz posterior rhythm reactive to eye-opening is a normal
Alpha rhythm for an adolescent.
6. What is the most common EEG correlate of Creutzfeldt-Jakob Disease?
A. 3 Hz spike and wave
B. Periodic Lateralized Epileptiform Discharges (LPDs)
C. Generalized Periodic Discharges (GPDs) at 1-2 Hz
D. Hypsarrhythmia
Answer: C
Conceptual Explanation: CJD is classically associated with generalized periodic sharp
wave complexes occurring at regular intervals of 0.5 to 2 seconds.
