# Virtual Brainwear ® Detections

Under Detections, you can set the output of available detections.  Only detections available and supported by the physical headset are available for your virtual device. 

**Performance metrics detections**

To set the performance metric output, click on the '**isActive**' checkbox and move the slider to your desired output. Changes to the data stream happen in real-time.

![](https://lh4.googleusercontent.com/Y9hAT6AutIvsMAh9KqPInxBZhK8Quzx6kGMQfucvJZgfWAkhf8Kq9L9BySFaDzaVEu_QqnQPykGNwhTu2jGBerAqpBjIvUnu2y7ncb27bv1x6gRB9GTTzMxxDO-18iQ1DJqaJStZ)


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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/cortex-manual/virtual-brainwear-r/virtual-brainwear-r-detections.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.