> For the complete documentation index, see [llms.txt](https://emotiv.gitbook.io/flex-2.0-user-manual/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/flex-2.0-user-manual/setting-up-flex-cap/inserting-sensors.md). # Inserting Sensors To insert the sensors into the FLEX Cap, we recommend placing it onto a mannequin head and inserting the sensors through the openings before placing it onto your participant’s head. It can take up to an hour to position all the sensors in your chosen configuration. ### Inserting Sensors Steps


Step 1 Hold the underside of the FLEX Cap. Then, stretch the material around the hole you’re inserting the sensor through.
Step 2 There are two ways to insert the sensors into the FLEX Cap. To insert the sensor, push it upwards through the hole, then release the tension in the material so that it fits around the bottom half of the sensor; or Turn the FLEX Cap inside out, stretch the hole over the sensor, then let the material retract into place around the plastic groove of the sensor. TIPS: Always ensure the sensor felt (saline only) faces inwards, towards the scalp, before inserting. Most of the sensor should be on the outside of the FLEX Cap, and the felt pad should be on the inside, where it will rest against your participant’s scalp during your study. Do not force the sensors through the openings.
Step 3 Adjust the material around the sensor until it is fully fixed in place.

Step 1

Hold the underside of the FLEX Cap. Then, stretch the material around the hole you’re inserting the sensor through.

Step 2

There are two ways to insert the sensors into the FLEX Cap.

To insert the sensor, push it upwards through the hole, then release the tension in the material so that it fits around the bottom half of the sensor; or
Turn the FLEX Cap inside out, stretch the hole over the sensor, then let the material retract into place around the plastic groove of the sensor.

TIPS:

Always ensure the sensor felt (saline only) faces inwards, towards the scalp, before inserting.
Most of the sensor should be on the outside of the FLEX Cap, and the felt pad should be on the inside, where it will rest against your participant’s scalp during your study.
Do not force the sensors through the openings.

Step 3

Adjust the material around the sensor until it is fully fixed in place.

Repeat these three steps for all of the sensors in your chosen configuration. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://emotiv.gitbook.io/flex-2.0-user-manual/setting-up-flex-cap/inserting-sensors.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.