Hello, I have the same problem with the EPOC-X.
The CQ reaches 100%, the participant remains seated, calm, the sensors are wet and have good contact with the scalp, but the EG quality fluctuates.
When the participant move his eyebrows the EEG quality goes to 0%, the same case when moves his head while seated and when the person gets up from the seat and walks. You can see that is does not matter if the participant is calm and seated, makes slow head or facial movements or is standing up and walking, we obtain 0% or low percentages in any case.
In your web page we saw that this sensor has been used in a supermarket when the person is standing up and walking, can you tell us how you obtained good EEG quality and no leak of packages data?
Thank you for your help.
