> For the complete documentation index, see [llms.txt](https://emotiv.gitbook.io/emotiv-brainviz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://emotiv.gitbook.io/emotiv-brainviz/contact_quality_map.md).

# Contact quality map

![](/files/-LIeRywUdcH3gr8b8d-U)

Accurate data collection depends on good sensor contact and EEG signal quality. The contact quality display is a visual representation of the current contact quality of the individual headset sensors. You can observe each sensor’s status in real time to adjust sensors to optimize contact quality. The color coding is as follows:

* Green - good
* Orange - moderate
* Red - poor
* Black - very poor