EEG data

I've just started looking into EEG data using a Muse s and mind monitor. I've noted this very regular 4 Hertz (approximately) pattern and wonder if this is real or an artifact. Is it just a very regular delta wave? My understanding is that this is the raw real time levels from different sensors. The time between dashed lines is one second.

  • $\begingroup$ Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. $\endgroup$
    – Community Bot
    Sep 1, 2021 at 0:08
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    $\begingroup$ This is rather a electro-physiological question than a pure signal processing question. Nevertheless, from my experience it does not look like eeg/brain signals at all. $\endgroup$ Sep 1, 2021 at 12:17

1 Answer 1


TP9 and AF7 are definitely not brain waves. AF8 is more realistic, but still too clean; I suspect both it and TP10 were heavily filtered. Possibly TP9 and AF7 had negligible activity and were dominated by equipment noise, where a single frequency prevails (e.g. 60Hz), so its bandpass filtering would show such regularity.

I'd dig around in the app for a way to display the data in raw form.

  • $\begingroup$ I will thanks! . $\endgroup$
    – ericf
    Sep 2, 2021 at 1:11

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