R. EEG T. CERTIFICATION
COMPREHENSIVE EXAMINATION TEST
2026 VERIFIED QUESTIONS AND ANSWERS
GRADED A+
●● 4 key principles of the 10-20 system. Answer: 1. electrode positions
are determined using skull landmarks
2. Measurements are proportional to head size and shape (10 or 20
percent spacing)
3. positions correspond to brain areas
4. Cortical areas beneath standard electrode positions are defined
●● Electrode labels (regions) (where the odd and even numbers are).
Answer: Odd: left side Even: right side
F: Frontal
T: Temporal
P: Parietal
O: Occipital
Z: Midline
●● Step 1:. Answer: Nasion to Inion
Mark CZ (50%)
, Measure and mark FZ, PZ, Fpz, and OZ
●● Step 2:. Answer: Preauricular points:
Measure ear-to-ear through Cz
Mark C3, T3/TZ, C4, T4/T8
●● Step 3:. Answer: Measure head circumference to locate Fp1, Fp2, F7,
F8, T5/P7, T6/P8, O1, and O2
●● Step 4:. Answer: Parasagittal planes:
Determine C3, and C4 positions using Fp1, Fp2, O1, and O2
●● Step 5:. Answer: Frontal and Parietal Planes:
Mark positions like Fz, F3, F4, Pz, P3, and P4.
●● Step 6:. Answer: Additional Placements:
Electrodes like T1 and T2 are used for special cases.
●● Common errors. Answer: Inaccurate landmark locations (inion,
nasion).
Arithmetic mistakes.
Stretching or loosely holding the tape measure.
COMPREHENSIVE EXAMINATION TEST
2026 VERIFIED QUESTIONS AND ANSWERS
GRADED A+
●● 4 key principles of the 10-20 system. Answer: 1. electrode positions
are determined using skull landmarks
2. Measurements are proportional to head size and shape (10 or 20
percent spacing)
3. positions correspond to brain areas
4. Cortical areas beneath standard electrode positions are defined
●● Electrode labels (regions) (where the odd and even numbers are).
Answer: Odd: left side Even: right side
F: Frontal
T: Temporal
P: Parietal
O: Occipital
Z: Midline
●● Step 1:. Answer: Nasion to Inion
Mark CZ (50%)
, Measure and mark FZ, PZ, Fpz, and OZ
●● Step 2:. Answer: Preauricular points:
Measure ear-to-ear through Cz
Mark C3, T3/TZ, C4, T4/T8
●● Step 3:. Answer: Measure head circumference to locate Fp1, Fp2, F7,
F8, T5/P7, T6/P8, O1, and O2
●● Step 4:. Answer: Parasagittal planes:
Determine C3, and C4 positions using Fp1, Fp2, O1, and O2
●● Step 5:. Answer: Frontal and Parietal Planes:
Mark positions like Fz, F3, F4, Pz, P3, and P4.
●● Step 6:. Answer: Additional Placements:
Electrodes like T1 and T2 are used for special cases.
●● Common errors. Answer: Inaccurate landmark locations (inion,
nasion).
Arithmetic mistakes.
Stretching or loosely holding the tape measure.
