seeking EEG file recordings, to download and test with

AgustinS · October 2015

Is there any place where I could download signals registered with OpenBCI?

I mean text / csv files.

I want to watch them and test openvibe or neuromore.

Thanks!

wjcroft · October 2015

This is not OpenBCI per se, but a set of public databases of physiological signals, including EEG.

http://physionet.org/

This utility allows conversion between formats,

http://www.teuniz.net/edfbrowser/

William

AgustinS · October 2015

Thanks @wjcroft, I know Physionet. But I need registers in the format that is produced by OpenBCI,

I want to learn about the format and check if I can imitate it and use my own design with the same drivers used with OpenBCI in openVIBE and neuromore.

wjcroft · October 2015

The edfbrowser can create csv text files from EEG recordings. One column per EEG channel. This is very close to the format that the OpenBCI_GUI creates. A small Python program can provide any extra columns you need, such as the time stamp counter.

If you are talking about the raw format that is received from the dongle serial port, then I know of no current programs that save that directly. Although you should be able to use the OpenBCI_Python code to create such a file. The drivers in programs such as BrainBay, and neuromore, expect to read directly from such a serial port. On Windows this is a COMx: device. On Mac, a /dev/xxx file. On Mac and Linux it's easy to substitute a file stream for a device or serial stream. However all the programs will also be attempting to setup baud rates and other parameters for the port, which only make sense on real serial ports. You might look around for some setup that will let you emulate a hardware serial port from the contents of a file.

AgustinS · October 2015

Thanks @wjcroft! I think it will help me to start.

wjcroft · October 2015

Here's a list of the file formats supported by OpenViBE,

http://openvibe.inria.fr/supported-file-formats/

biomurph · October 2015

@AgustinS,

If you download the OpenBCI GUI (or just go to the github) you will find that we have some pre-recorded data in the program file.

https://github.com/OpenBCI/OpenBCI_GUI/tree/master/OpenBCI_GUI/SavedData/Sample_Data

There are also some txt files here that contain OpenBCI formatted data

https://github.com/OpenBCI/OpenBCI_Processing/tree/master/OpenBCI_GUI/SavedData/Sample_Data

AgustinS · October 2015

Yes @biomurph I was looking at tte processing GUI.

I found the files, it is exactly what I was looking for.

Thank you!

perplexity · January 2016

I have written code to transform raw OpenBCI data and visualize it as a spectrogram. However, I'm not sure about how well my electrode setup is working - the data isn't looking like I expect it to.

Does anyone know of raw EEG reference data available, showing eyes-closed alpha waves, SSVEP, or other basic conditions that should produce clearly visible phenomena? I'd like to try running it through my FFT transformation and visualized to test whether the system is working correctly. Thanks.

wjcroft · January 2016

https://github.com/chipaudette/EEGHacker

https://www.physionet.org/physiobank/database/#neuro

wjcroft · January 2016

@perplexity, just merged your question into this existing thread. Also see Joel's suggestion on the previous post in this thread,

http://openbci.com/forum/index.php?p=/discussion/comment/2970/#Comment_2970

perplexity · January 2016

Thanks! I appreciate it.

nborgagonzalez · April 2016

[original post title: Any 'buckets' of real, sampled EEG data anywhere?]

Is anyone aware of any "data buckets" (CSV files, public AWS S3 buckets, databases, etc.) that contain real EEG montage data read from OpenBCI mainboards?

I'm developing an app that will read EEG data off of the OpenBCI mainboard and do some things with it, and would like some dummy/test data to work with. I *could* generate this data myself, but I'd prefer it to be relatively realistic with what actual readings will look like. Any ideas?

wjcroft · April 2016

Hi @nborgagonzalez, I merged your post into this existing thread. See previous posts.

pdehaye · April 2016

[original thread titled: Open data repository of recordings]

Hi

Is there some effort to collect recordings somewhere? I am looking for sample files to test some software.

Thanks!

Paul

wjcroft · April 2016

Hi @pdehaye,

I merged your question into this existing thread. See previous posts. There is also a search box in the right column and "recordings" would have returned this thread. Thanks,

William

pdehaye · May 2016

Thanks, William

ahsanic · September 2017

Hey,

Can anybody send me data of cyton board, 3 mins eyeclose if possible. Need to compare it with my data.

Thanks

wjcroft · September 2017

@ahsanic, hi. Merged your question into this existing thread.

William

ElisabethSmithie · March 2018

Hello,
On the occasion of the Brain Week I would like to tell my facebook friends etc. to download the OpenBCI GUI and load a file for playback. Is there a file I could use?

At this thread further above, Joel @biomurph says in 2015:
"If you download the OpenBCI GUI (or just go to the github) you will find that we have some pre-recorded data in the program file."
https://github.com/OpenBCI/OpenBCI_GUI/tree/master/OpenBCI_GUI/SavedData/Sample_Data
(end of quote)

At the latest version of the GUI (December 2017) the Saved Data folder contains only recordings saved by me and I could playback those.

The EEG_Data folder contains the SDconverted-2016-12-17_18-28-40.txt. which is of 0 bytes (OpenBCI_GUI/application.linux64/data/EEG_Data/).

From the files in Github mentioned, I tried the SDconverted-2014-10-22_16-27-06.txt but it is impossible to playback:

OpenBCI_GUI: initSystem: loading playback data from /home/elisabeth/Documents/SDconverted-2014-10-22_16-27-06.txt
%OBCI Data Log - 2014-10-22_16-27-06
OpenBCI_GUI: initSystem: could not open file for playback: /home/elisabeth/Documents/SDconverted-2014-10-22_16-27-06.txt
: quitting...
openBCI_GUI: haltSystem: Halting system for reconfiguration of settings...
OpenBCI_GUI: stopRunning: stop running...
java.lang.NullPointerException
at OpenBCI_GUI.initSystem(OpenBCI_GUI.java:675)

I presume that is due to difference in data structure (mentioned file below followed by my file):

%OBCI Data Log - 2014-10-22_16-27-06
0.0,84022.69,84056.17,84118.64,84162.945,84132.52,84083.55,84091.04,84070.945
1.0,84054.07,84087.62,84150.07,84194.33,84163.91,84114.93,84122.484,84102.37
2.0,84121.63,84155.164,84217.66,84261.94,84231.43,84182.43,84190.08,84169.914

%OpenBCI Raw EEG Data
%
%Sample Rate = 200.0 Hz
%First Column = SampleIndex
%Last Column = Timestamp
%Other Columns = EEG data in microvolts followed by Accel Data (in G) interleaved with Aux Data
0, 62.35, 74.37, 77.09, 72.42, 0.000, 0.000, 0.000, 21:24:14.251
1, 14.71, 14.76, 13.00, 12.93, 0.000, 0.000, 0.000, 21:24:14.265
2, -22.81, -26.63, -33.35, -33.58, 0.000, 0.000, 0.000, 21:24:14.266

Would you consider placing a file for playback in the next GUI release? In the mean time could you recommend a file that we could link to in a facebook post etc.? I think it would be a good idea for the general public to familiarize themselves with an EEG file and then maybe try to create one themselves!

Thank you in advance

Best wishes

Elisabeth

wjcroft · March 2018

Elisabeth, can you log your request for valid sample data in the next GUI, as an issue? Link to this thread.

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

As an interim file for your network, could you just upload some of our own data to Google Drive and link to that?

William

ElisabethSmithie · March 2018

Hello William (@wjcroft),

Thank you for your response (including your suggestion for an alternative solution).

Best wishes

Elisabeth

ElisabethSmithie · March 2018

Hello William (@wjcroft),

Following your advisement, I have posted the issue here: https://github.com/OpenBCI/OpenBCI_GUI/issues/315.

Thank you

Best wishes

Elisabeth

seeking EEG file recordings, to download and test with

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