20
Attaching the 3-channel ECG sensor
EEG/EOG
Attaching the PSG headbox according to AASM Guidelines
Positions of the electrodes (PSG according to AASM)
GND:
Centre of forehead
REF:
Applied to Cz, see 10/20 system
EOG l:
1cm above outer canthus of left eye
EOG r:
1cm below outer canthus of right eye
F3/4:
See 10/20-System
C3/4:
See 10/20-System
O1/2:
See 10/20-System
M1/2:
Behind left/right ear (mastoid; select boniest area)
EMGref:
centred
1 cm above the inferior edge of the mandible
EMG1/2:
2 cm below the inferior edge of the mandible and 2 cm to the left/right of the center.
Application for 32-channel headbox according to 10-20 System
Preauricul
ar
e
left
right