Connect muse to Mac

Instructions for streaming EEG data to a Mac computer.

1. Download and install the Metrics application

To connect either a muse 1, 2, or S, you’ll first need to download the Metrics desktop application from Then, proceed with the installation process.

2. Turn on Bluetooth

3. Power on the muse

Following installation, turn on your muse device by pressing the power button. The LED indicator light should pulse in sequence.

4. Run Petal Metrics application

Open the Petal Metrics application.

5. Start Streaming

Click the Stream button to connect to the muse and stream data.

If the device successfully connects, two changes should occur:

  • Indicator LED

    • The LED on the muse headband will stop pulsing and remain lit.

  • Application Status Bar

    • The Status Bar should display Streaming, the device ID, and the battery level.

By default, the Stream button will open an EEG LSL stream on the local network. Alternatively, streams may be set to use the OSC protocol.

Note: at the moment, the muse S has an issue with this method where it may spontaneously disconnect in the middle of its stream - however, this event should be rare, and the auto-reconnection functionality should reconnect quickly. The muse 1 and 2 don’t have this issue but are a bit less comfortable to wear for longer periods of time.


EEG (Electroencephalogram): measurement of electrical activity produced by the brain.

LSL (Lab Streaming Layer): a research-focused EEG and marker streaming system that provides high-resolution timestamps in addition to high-frequency EEG streaming.

OSC (Open Sound Control): a protocol for networking sound synthesizers, computers, and other multimedia devices.

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