The signal of each EEG channel is analyzed during the recording, and labeled accordingly (good or bad quality). Then the proportion of good quality EEG signals is computed and given through this metric.
How to read them
The three values pertain to three sensors: Left Occipital sensor, Right Occipital sensor, and Frontal sensors respectively.
- When all values are below 85, the overall fit and position of the headband should be addressed with the participant.
- If one or both occipital values are the lowest values, special attention should be given to assess the occipital sensor fit and use with the participant.
- If the frontal values are lowest, this may point to a use issue with the frontal sensors.