# Muse The Muse S and Muse 2 are research-grade EEG headbands for meditation and sleep. Visit the [Muse website](https://choosemuse.com) to learn more. ## Using it in the platform The Muse 2 headband is only compatible with Chromium-based browsers, which include Google Chrome, Microsoft Edge, and Opera. **To connect**, you don’t have to download anything. Simply turn on the device and proceed to connect it through the application using Bluetooth. If you have connectivity issues, oftentimes the best solution is to restart the device. ## Signals ### Sensors * **EEG:** electroencephalography measures **brain activity** by capturing electrical activity from the brain. This device has four EEG electrodes meant to capture information from the frontal and temporal lobes of the brain as measured through the scalp. * **PPG:** photopletismography measures changes in blood flow through light absorption or scattering by the hemoglobin in the blood. ### Output #### **EEG raw signals** According to the 10-20 international system, the Muse has the following electrodes. * TP9 * TP10 * AF8 * AF7 #### **EEG band power** Band power quantifies a signal's strength in a specific frequency range. The value provided is the average power across all electrodes. The calculation is performed using a fast Fourier Transform at 20 Hz on a 2-second window * Theta: 4 - 8 Hz band power * Alpha: 8 - 12 Hz band power * Low beta: 12 - 16 Hz band power * High beta: 16 - 25 Hz band power * Gamma: 25 - 45 Hz band power #### **Other** * PPG: raw signal obtained by the light sensor * Heart rate: heart rate calculation from PPG ## Attribution To connect to the Muse on the browser, we used the implementation provided on the following GitHub. {% embed url="" %} --- # 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://docs.youquantified.com/devices/muse.md?ask= ``` 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.