Filter EEG signal and display changes over time

whatever · November 2016

I am a backer of the latest Kickstarter and will most likely soon receive my Ganglion and Ultracortex IV.

I would like to monitor changes at specific locations over time. Preferably, I want a software which is able to separate the EEG signal into its different components (wavelengths) and display activity at specific frequencies over time.

Excellent would be if this software was able to present the measured data as a waterfall diagram.

Do you guys have any suggestions on where to look?

wjcroft · November 2016

All the VPL (Visual Programming Language) programs can do this: BrainBay, neuromore, OpenViBE, BioEra, LabVIEW. These already work with the original OpenBCI 8 and 16 channel boards. However it may take a bit of time before the VPLs are adapted to Ganglion. Hopefully within a month after release.

Use the search box in the right column with the name of one of the VPLs.

The "waterfall" you refer to is typically called a spectrogram graph. Some versions of the OpenBCI_GUI support this. I think the V2 GUI may have this built in.

https://github.com/OpenBCI/OpenBCI_GUI_v2.0

https://en.wikipedia.org/wiki/Spectrogram

William

maxx · May 2017

Cant find spectrogram in V2 GUI?

wjcroft · May 2017

https://www.google.com/search?as_q=spectrogram&as_sitesearch=openbci.com

maxx · July 2017

Can someone add live spectrogram in new v2.2.1 GUI?

wjcroft · July 2017

Maxx, you can add your request as an issue,

https://github.com/OpenBCI/OpenBCI_GUI/issues

The other search link I gave, shows there are previous versions of the GUI that had prototype support for spectrogram.

The VPL's I listed in November 2016 all support spectrogram. In particular, BioEra now talks to both Cyton and Ganglion directly, no LSL needed.

William

Filter EEG signal and display changes over time

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