I have a new to me, but used, insight headset. Contact and EEG scores are fine. But regardless of person wearing it, there is no activity shown in rear left quadrant of brain. Thoughts? Bad sensor? If so, which one – how to fix, test?
Please try to switch the electrode on AF3 with another sensor. If you have the primer fluid, please use a drop or two to moisten the gummy tips of all the sensors especially the one on the top left ear.
If you are still experiencing Contact Quality issues with the headset, please send an email to firstname.lastname@example.org with a video showing the contact quality screen and you performing the Thumb Bridge test.