The document describes the procedures for placing electrodes according to the 10-20 system. It involves taking measurements from defined landmarks on the head and dividing them into percentages to locate standard electrode positions. The first measurement is taken from the nasion to the inion in the anterior-posterior plane and divided into 5 sections labeled Fp, Fz, Cz, Pz, and Oz. A second measurement is taken between the preauricular points through Cz and divided similarly. Additional electrodes T1-T6, F7-F10, and O1-O2 are also described.
8. Anterior to posterior measument
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The first measurement is in the anterior-posterior plane through the vertex,
taken from the Nasion to the Inion.
9. Anterior to posterior measument
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This AP Measurement divided into 5 segments- Fp,Fz,Cz,Pz,Oz
10. Anterior to posterior measument
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This AP Measurement divided into 5 segments- Fp,Fz,Cz,Pz,Oz
11. Anterior to posterior measument
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This AP Measurement divided into 5 segments- Fp,Fz,Cz,Pz,Oz
12. Anterior to posterior measument
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This AP Measurement divided into 5 segments- Fp,Fz,Cz,Pz,Oz
13. Anterior to posterior measument
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This AP Measurement divided into 5 segments- Fp,Fz,Cz,Pz,Oz
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The second, third, fourth and fifth marks are placed at 20%
intervals of the total measurement and label Fz, Cz, Pz, and Oz .
Anterior to posterior measument
16. z
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The second, third, fourth and fifth marks are placed at 20%
intervals of the total measurement and label Fz, Cz, Pz, and Oz .
Anterior to posterior measument
17. z
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The second, third, fourth and fifth marks are placed at 20%
intervals of the total measurement and label Fz, Cz, Pz, and Oz .
Anterior to posterior measument
18. z
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The second, third, fourth and fifth marks are placed at 20%
intervals of the total measurement and label Fz, Cz, Pz, and Oz .
Anterior to posterior measument
19. Lateral measurement of the central coronal plane starts at the left preauricular
point, Just anterior To tragus through the Cz to the right preauricular point.
Coronal measurement
20. Coronal measurement
Lateral measurement of the central coronal plane starts at the left preauricular
point, Just anterior To tragus through the Cz to the right preauricular point.
21. Coronal measurement
Lateral measurement of the central coronal plane starts at the left preauricular
point, Just anterior To tragus through the Cz to the right preauricular point.
22. Coronal measurement
Lateral measurement of the central coronal plane starts at the left preauricular
point, Just anterior To tragus through the Cz to the right preauricular point.
23. A mark is placed at 10% of this measurement from the
preauricular points and labelled T3 on left and T4 on right
Coronal measurement
24. Coronal measurement
A mark is placed at 10% of this measurement from the
preauricular points and labelled T3 on left and T4 on right
25. A mark is placed in that line of 20 % of total length on both
side are marked C3 and C4 from T3 and T4 respectively..
Coronal measurement
26. A mark is placed in that line of 20 % of total length on both
side are marked C3 and C4 from T3 and T4 respectively..
Coronal measurement
27. Circumferential measurement
A circumferential measurement is then taken over the temporal
lobes from the midline Fp position to the midline O position
through T3 and T4 in left and right side respectively.
