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Wednesday, May 21, 2014

DIY: Brain:computer interaction

This is a follow-up on last Monday's post reporting research and development activity on brain-computer interaction.  Here is a repeat of the video shown there:
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At Neuroscape Labs' page about the Glass Brain Project this video is described as
... a Unity3D brain visualization that displays source activity and connectivity, inferred in real-time from high-density EEG using methods implemented in SIFT and BCILAB.

If you're interested in following along with current efforts to visualize brain activity and maybe break new ground, tools are available.

SIFT, which is open source and can be downloaded at the SIFT site, is an EEGLAB-compatible application and
 ...toolbox for analysis and visualization of multivariate causality and information flow between sources of electrophysiological (EEG/ECoG/MEG) activity. It consists of a suite of command-line functions with an integrated Graphical User Interface for easy access to multiple features. There are currently four modules: data preprocessing, model fitting and connectivity estimation, statistical analysis, and visualization

BCILAB is an open source "Matlab Toolbox for Brain-Computer Interface research."
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image: illustration of BCILAB application
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For the visualization part (video that can be uploaded to YouTube, for example) Unity3D, a game engine, offers a free version for Windows and can be downloaded via the download page.

Now for the data collection.  A number of sites offer a variety of headsets.  You can find a comparison of consumer brain–computer interfaces, both devices and projects, at Wikipedia.  Here's an example of one of the devices available (Emotiv, $299).
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image: photo of Emotiv headset being worn 
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May the Force be with you.

 -- Marge

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