Cleveland Family Study

17.8.3.13 Attachement Sites for Gold Disk Electrodes

1. Ground – Cz top of head (Green wire)
2. EEG –
   • C4 right Central (Beige wire)
   • A1 left mastoid (Red wire)
   • C3 left central (Blue wire)
   • A2 right mastoid (Yellow wire)
   • O1 left occipital (White wire)
   • O2 right occipital (Purple wire)
3. REF – middle of the forehead, between the nasion and the start of the hairline (Grey wire)
4. LOC – left eye, below outer canthus (White wire)
5. ROC – right eye, below outer canthus (Purple wire)
6. EMG – as one on the ledge of the chin and two on either side of submentalis muscle underneath the chin (Beige, Brown and Orange wires). Color-coding for sides is important, but more important is spacing (at least 3 cm. between disks), and that the electrodes are securely attached.

• EMG 1 – Beige (on chin)
• EMG 2 – Orange (right submental)
• EMG 3 – Brown (left submental)