Simultaneous Heart and Brain Signal

Hi there!
I want to get simultaneous heart and brain signals using my ganglion. Is this possible or is it overly complicated because the power range associated with each are on different scales?

If it is possible do I need to get the heart sensor or can it be done using some of the electrodes?

The end goal is to be able to measure the relationship between heart and brain metrics, and also to be able to display them using a lighting array.

Some pointers would be greatly appreciated!


  • wjcroftwjcroft Mount Shasta, CA
    edited October 2023

    Austin, hi.

    Yes this is easy. Are you familiar with the Ganglion switches?

    Your heart ECG connection will use BOTH pins on your selected channel. Plus and Minus. And the switch set to 'differential'. Note that the 'ground' connection (LL on the diagram below), is NOT needed. This is because you will be using ground and reference on the ear lobes for the EEG channels.

    Your EEG channels will have the switches set on the 'REF' position, to use the common reference.


  • Hey William!

    Thanks so much. Yup I'm familiar with the switches. I do want to verify whether the pulse sensor is needed or not? I was hoping one of the ear pins would be sufficient, but if not then please do let me know.

  • wjcroftwjcroft Mount Shasta, CA

    The setup I described is for measuring simultaneous EEG and ECG. The Pulse Sensor is an optional accessory usually only used with Cyton, not Ganglion. It measures PPG signal at the ear lobe and derives heart rate in BPM. ECG is the actual heart electrical signal.

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