# Menu and navigation

You can navigate through main features of EmotivBCI using the left side menu. This menu is always visible on high resolutions screens. For low resolution screens, you can access this menu when needed by clicking on the menu icon in the top left corner of the application.

![](/files/r8Mp5YRtu2N5vBk7aexb)

With this menu you can access the following features which will display in the main application display area:

* **Mental Commands:** train and test Mental Commands (discrete thoughts) that can later be used to control various things around you
* **Facial Expressions:** train and test Facial Expression recognition which can later be used as triggers to control devices around you
* **Performance metrics:** view real time data streams for EMOTIV Performance Metrics
* **Motion Sensors:** view a real time data stream from your headset’s 9-axis motion sensors


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# Agent Instructions: 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:

```
GET https://emotiv.gitbook.io/emotivbci/menu-and-navigation.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.