Understanding Gaps in My Session Data

Gaps in your session data are interruptions in the biofeedback tracking, such as when Muse loses sensor signal quality, when Bluetooth disconnects, or when the Muse battery depletes.

The Muse app continues your session even if your biofeedback tracking is interrupted so that you don’t lose the data you’ve already collected. Gaps in your session data should be very minor, but larger gaps could need some extra troubleshooting.
 

Bluetooth Disconnects
Sensor Quality
Signal Noise
Battery Depletion

 

Bluetooth Disconnects

The Muse app will automatically try to restore the Bluetooth connection if it’s lost. Bluetooth disconnects can happen if:

• Your Muse and your iOS/Android device are too far apart.

• Your iOS/Android device Bluetooth gets turned off.

• You accidentally power off your Muse..

Make sure your iOS or Android device is nearby during your session for a consistent Bluetooth connection.

If there’s a longer Bluetooth disconnect, you’ll get a notification on your device's lock screen and an in-app notification. If you tap to ignore the notification, your session will continue, but the biofeedback tracking will be interrupted and may stop altogether.

If you notice this happening frequently or if you're losing Bluetooth connectivity for a long time, see our steps for Bluetooth troubleshooting.

 

Sensor Quality

The Muse app will automatically try to restore sensor quality throughout your session.

Sensor quality loss usually happens when Muse loses contact between the sensors and your skin, such as when you change sleep positions.

The Muse app shows you a live view of your sensor quality and battery charge during your sessions. If you notice any of the sensors are not making solid contact, try adjusting your Muse fit without restarting your session.

If sensor quality is lost for more than 20 seconds, you’ll get a notification on your lock screen and an in-app notification. If you tap to ignore the notification, your session will continue, but the biofeedback tracking will be interrupted and may stop altogether. The notification disappears once sensor quality improves. 

If you notice this happening frequently or if you've been losing sensor signal quality for a long time, see our steps for sensor quality troubleshooting.

 

Signal Noise

When the brainwaves all spike up together in your post-session data graph, it is an indicator of “signal noise,” which is caused by movement, other electronic equipment, or a bad fit. 

Signal noise is normal and expected, but we understand that customers may experience anxiety over their brainwave data or question the accuracy.

This can be resolved by going over fit instructions and following best meditation practices, such as keeping your eyes closed and limiting movement during your session. 

 

Battery Depletion

Make sure your Muse is fully charged before completing longer meditations or sleep sessions.

For sleep sessions, we also recommend keeping your iOS/Android device plugged in overnight. If your device runs out of power overnight, your sleep session will stop recording, though you’ll still be able to save your incomplete session when you wake.

If your Muse battery is not lasting for a full charge (up to 4 hours for Muse 2 or Original Muse, and up to 10 hours for Muse S), it may help to go through the battery troubleshooting steps.

⚠️ If your session ends abruptly without you tapping the End Session button and the battery of your iOS/Android device and Muse are fine, then it's possible there was an app crash.