EEG Board Exam 2025/2026 | Verified
Practice Questions & Correct Answers with
Detailed Rationales | Comprehensive
Electroencephalography Certification Study
Guide
EEG BOARD EXAM 2025/2026 | VERIFIED PRACTICE QUESTIONS WITH DETAILED
RATIONALES
DOCUMENT OVERVIEW
• This comprehensive study guide contains 200 practice questions designed to
prepare you for EEG board certification with detailed rationales for each answer to
reinforce learning and understanding of electroencephalography principles.
• Study strategically by reviewing each question carefully, attempting answers
before reading rationales, and using incorrect responses as learning opportunities
to strengthen weak areas in your EEG knowledge base.
QUESTIONS
1. What is the normal frequency range of alpha rhythm in awake adults?
A) 3-7 Hz
B) 8-13 Hz
C) 14-30 Hz
D) 30-100 Hz
E) Below 3 Hz
✓ CORRECT ANSWER: B) 8-13 Hz
Rationale: Alpha rhythm is the dominant background activity in awake, alert adults
with eyes closed. It originates primarily from the parieto-occipital regions and is
characterized by a frequency range of 8-13 Hz. This rhythm typically attenuates
,with eye opening and mental activity, making it a fundamental normal EEG finding
that examiners must recognize instantly.
2. Which brain wave frequency is associated with deep sleep (Stage 3 NREM)?
A) Alpha waves (8-13 Hz)
B) Beta waves (14-30 Hz)
C) Delta waves (0.5-4 Hz)
D) Theta waves (4-8 Hz)
E) Gamma waves (30-100 Hz)
✓ CORRECT ANSWER: C) Delta waves (0.5-4 Hz)
Rationale: Delta waves, with a frequency of 0.5-4 Hz, are the slowest and highest
amplitude brain waves and are the hallmark of Stage 3 NREM sleep, also called slow
wave sleep. Significant delta wave activity outside of sleep in an awake adult is
abnormal and may indicate encephalopathy, metabolic dysfunction, or structural
brain disease requiring further investigation.
3. The 10-20 electrode placement system has how many standard electrode
locations?
A) 13
B) 19
C) 21
D) 25
E) 32
✓ CORRECT ANSWER: C) 21
Rationale: The standard 10-20 system includes 21 electrodes placed on the scalp
according to specific anatomical landmarks and proportional distances. The "10-20"
,nomenclature refers to the spacing between electrodes being either 10% or 20% of
specific head measurements. Additional electrodes can be placed for expanded
monitoring, but the standard international system uses 21 locations.
4. Which electrode placement abbreviation represents the left temporal area?
A) F3
B) C3
C) T3 (or T7)
D) P3
E) O1
✓ CORRECT ANSWER: C) T3 (or T7)
Rationale: In the 10-20 naming system, electrodes are labeled with letters indicating
region (F=frontal, C=central, P=parietal, O=occipital, T=temporal) and numbers
indicating hemisphere (odd numbers=left, even numbers=right). Therefore, T3 (now
also called T7 in the updated 10-20 system) represents the left temporal electrode
position. T7 is the newer nomenclature being adopted internationally.
5. What does the abbreviation "Hz" represent in EEG frequency analysis?
A) Head zones
B) Hertz (cycles per second)
C) High amplitude zones
D) Hemisphere zones
E) Harmonic zones
✓ CORRECT ANSWER: B) Hertz (cycles per second)
Rationale: Hertz (Hz) is the unit of frequency measurement in physics and
neurophysiology, representing the number of complete cycles that occur per
, second. In EEG, frequency bands are defined by their Hz values, with alpha being 8-
13 Hz meaning 8 to 13 complete oscillations occur each second. Understanding this
fundamental unit is essential for all EEG frequency interpretations.
6. What is the typical amplitude of normal alpha rhythm in healthy adults?
A) 5-10 microvolts
B) 20-50 microvolts
C) 50-100 microvolts
D) 100-200 microvolts
E) 200-500 microvolts
✓ CORRECT ANSWER: B) 20-50 microvolts
Rationale: Normal alpha rhythm typically has an amplitude of 20-50 microvolts,
though this can vary among individuals and even between hemispheres in the
same person. Amplitude variations of 15-100 microvolts are still generally
considered normal. Consistently high amplitude alpha (>100 μV) may indicate
abnormality, while very low amplitude alpha may suggest drowsiness or diffuse
brain dysfunction.
7. During what state is alpha rhythm typically seen in the EEG?
A) During REM sleep
B) During deep sleep
C) Awake with eyes open
D) Awake with eyes closed
E) During muscle activity
✓ CORRECT ANSWER: D) Awake with eyes closed
Practice Questions & Correct Answers with
Detailed Rationales | Comprehensive
Electroencephalography Certification Study
Guide
EEG BOARD EXAM 2025/2026 | VERIFIED PRACTICE QUESTIONS WITH DETAILED
RATIONALES
DOCUMENT OVERVIEW
• This comprehensive study guide contains 200 practice questions designed to
prepare you for EEG board certification with detailed rationales for each answer to
reinforce learning and understanding of electroencephalography principles.
• Study strategically by reviewing each question carefully, attempting answers
before reading rationales, and using incorrect responses as learning opportunities
to strengthen weak areas in your EEG knowledge base.
QUESTIONS
1. What is the normal frequency range of alpha rhythm in awake adults?
A) 3-7 Hz
B) 8-13 Hz
C) 14-30 Hz
D) 30-100 Hz
E) Below 3 Hz
✓ CORRECT ANSWER: B) 8-13 Hz
Rationale: Alpha rhythm is the dominant background activity in awake, alert adults
with eyes closed. It originates primarily from the parieto-occipital regions and is
characterized by a frequency range of 8-13 Hz. This rhythm typically attenuates
,with eye opening and mental activity, making it a fundamental normal EEG finding
that examiners must recognize instantly.
2. Which brain wave frequency is associated with deep sleep (Stage 3 NREM)?
A) Alpha waves (8-13 Hz)
B) Beta waves (14-30 Hz)
C) Delta waves (0.5-4 Hz)
D) Theta waves (4-8 Hz)
E) Gamma waves (30-100 Hz)
✓ CORRECT ANSWER: C) Delta waves (0.5-4 Hz)
Rationale: Delta waves, with a frequency of 0.5-4 Hz, are the slowest and highest
amplitude brain waves and are the hallmark of Stage 3 NREM sleep, also called slow
wave sleep. Significant delta wave activity outside of sleep in an awake adult is
abnormal and may indicate encephalopathy, metabolic dysfunction, or structural
brain disease requiring further investigation.
3. The 10-20 electrode placement system has how many standard electrode
locations?
A) 13
B) 19
C) 21
D) 25
E) 32
✓ CORRECT ANSWER: C) 21
Rationale: The standard 10-20 system includes 21 electrodes placed on the scalp
according to specific anatomical landmarks and proportional distances. The "10-20"
,nomenclature refers to the spacing between electrodes being either 10% or 20% of
specific head measurements. Additional electrodes can be placed for expanded
monitoring, but the standard international system uses 21 locations.
4. Which electrode placement abbreviation represents the left temporal area?
A) F3
B) C3
C) T3 (or T7)
D) P3
E) O1
✓ CORRECT ANSWER: C) T3 (or T7)
Rationale: In the 10-20 naming system, electrodes are labeled with letters indicating
region (F=frontal, C=central, P=parietal, O=occipital, T=temporal) and numbers
indicating hemisphere (odd numbers=left, even numbers=right). Therefore, T3 (now
also called T7 in the updated 10-20 system) represents the left temporal electrode
position. T7 is the newer nomenclature being adopted internationally.
5. What does the abbreviation "Hz" represent in EEG frequency analysis?
A) Head zones
B) Hertz (cycles per second)
C) High amplitude zones
D) Hemisphere zones
E) Harmonic zones
✓ CORRECT ANSWER: B) Hertz (cycles per second)
Rationale: Hertz (Hz) is the unit of frequency measurement in physics and
neurophysiology, representing the number of complete cycles that occur per
, second. In EEG, frequency bands are defined by their Hz values, with alpha being 8-
13 Hz meaning 8 to 13 complete oscillations occur each second. Understanding this
fundamental unit is essential for all EEG frequency interpretations.
6. What is the typical amplitude of normal alpha rhythm in healthy adults?
A) 5-10 microvolts
B) 20-50 microvolts
C) 50-100 microvolts
D) 100-200 microvolts
E) 200-500 microvolts
✓ CORRECT ANSWER: B) 20-50 microvolts
Rationale: Normal alpha rhythm typically has an amplitude of 20-50 microvolts,
though this can vary among individuals and even between hemispheres in the
same person. Amplitude variations of 15-100 microvolts are still generally
considered normal. Consistently high amplitude alpha (>100 μV) may indicate
abnormality, while very low amplitude alpha may suggest drowsiness or diffuse
brain dysfunction.
7. During what state is alpha rhythm typically seen in the EEG?
A) During REM sleep
B) During deep sleep
C) Awake with eyes open
D) Awake with eyes closed
E) During muscle activity
✓ CORRECT ANSWER: D) Awake with eyes closed
