Connecting the EEG components

Kernel Flow2 includes four internal active dry EEG electrodes integrated into the headset and are placed close to PZ, CZ, F3, and F4 on the 10-10 grid, as well as two external leads (for Reference and Bias) with ear clips on the ends.

The EEG system is integrated into the Flow2 headset and the electrical signals are digitized and synchronized with the optical data on the headset to be transmitted together to Kernel Cloud. 

Two electrodes are installed on the centerline of the headset, plus two more on the Prefrontal plate. EEG electrodes come pre-installed in the headset. The system comes with an extra set of four electrodes tips. 

To get accurate EEG data, the four electrodes tips must be present in the EEG electrodes.The two external leads must also be connected to the participant in order to ensure accurate readings during each recording.

To learn more about caring for the EEG electrodes, see Cleaning your Flow2 system.

To connect the external EEG leads to a participant (clips):

While the headset is on the Headset Stand, connect the EEG leads (provided with your Kernel Flow2 system) to the 1/8” mini ports on the Hub of the headset. 

The wires are labeled Bias and Ref (for reference), as are the ports on each side of the Hub.

• If not already attached, snap two flat rubber electrode tips into the electrode holders inside the clips at the end of the EEG leads. 
• After the headset has been put on the head, attach the clips to the participant's earlobes.

Remove the external EEG leads

Once a recording is complete, be sure to have the participant unclip the leads from their earlobes before removing the DevKit from the head. 

To replace the EEG electrodes:

The EEG electrodes come pre-installed in the headset's electrode holders. It is recommended not to remove the dry EEG electrodes, as they are difficult to install. However, if you must, use the EEG electrode tip insertion tool that arrived with your DevKit shipment.

• Wrap your pointer and middle fingers around the bulb of the tool, with the top of the bulb pressing into your palm.
• Secure an EEG electrode tip to the end of the thinner part of the tool, ensuring the grooves hold the electrode in place.
• Position the underside of the electrode tip against an EEG electrode snap. Apply pressure with your palm until you feel the prong has been securely inserted. Confirm proper installation by testing that the electrode cannot be easily removed.
  

To learn more about caring for the EEG electrodes, see Cleaning your DevKit system.