User Manual
Table Of Contents
3. EEG/PSG MEASUREMENT
3.10 Operator's Manual WEE-1000
EEG Scalp Disk Electrodes
1. Clean the area where the electrodes are to be mounted with a gauze pad
moistened in alcohol or a medical soap solution to remove oil from the skin.
Wipe the site with dry gauze.
2. Apply a small amount of EEG paste to a 1 cm diameter circle on the cleaned
skin. Avoid spreading the paste too thin or creating too large a space.
3. Apply a small amount of paste to the disk electrode, and press the electrode
down gently on the previously pasted skin spot.
4. Cover the electrode with a small gauze pad and press the pad around the
electrode. Attach the electrode with surgical tape.
Electrode Positions
This procedure is for the Ten Twenty System.
1. Divide the longitudinal line of the head into halves and attach an electrode at
the Cz point (Fig. 1).
2. Divide the distance between Cz and the nasion in proportions as shown in Fig.
1 and attach an electrode at Fz and Pz. (Do not attach electrodes at Fpz and
Oz.)
3. Divide the transverse line of the head into proportions of 10%, 20%, 20%,
20%, 20% and 10% as shown in Fig. 2 and attach electrodes at T3, T4, C3 and
C4.
4. Divide the peripheral line passing over Fpz, T4, Oz and T3 into proportions as
shown in Fig. 3 and attach electrodes at Fp2, F8, T6, O2, Fp1, F7, T5 and O1.
Fig. 1
Fig. 2
Fig. 3
C
Z
F
Z
F
PZ
P
Z
O
Z
T
3
T
4
C
3
C
Z
C
4
F
P2
F
P1
F
PZ
F
8
T
4
T
3
T
5
O
1
O
2
O
Z
T
6
F
7
Disk electrode
Lead
Paste
Scalp
Scalp Disk Electrode Placement
Correct
Wrong