Muse Projects and questions


#1

So I’ve been having fun with my Muse in the first few days. I’m really not much of a developer but I can follow howtos ok.

First off, here are a few links I think people might be interested in:

https://github.com/JasnaTodorovic/MuseJS This uses node.js and should let you view some data in a browser, I haven’t finished getting it setup yet.

https://github.com/marionleborgne/cloudbrain This looks interesting but I had some problems with my python setup… I’ll come back to it later.

So, I’ve looked at EEG output, and alpha/beta/theta/delta/gamma waves, and I was wondering if anyone might be able to answer a question. When people do things like write a control for a sphero robot, or the mind-controlled RC quads/helis, they say they “think left/right” or “think of making a fist” with one or both hands: https://www.youtube.com/watch?v=VSTLHBrTgD4

What are they measuring? Can anyone give a summary answer about that?

Also if anyone feels like explaining something like the difference between absolute/relative/“score” elements, or could explain quantifier/FFT/etc stuff is, I’ve love to read it. I’m still plowing through info about brainwaves so if I’ve missed something or haven’t gotten to it yet I apologize. I thought maybe this could stimulate some discussion.

mdorre

Edit: I got MuseJS working on my VPS. I finally realized I had to edit the .js files to replace 127.0.0.1 with the server ip instead.

I’m not 100% sure it made a difference but I also reinstalled node using these instructions instead of just with the ubuntu package manager https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager

as well as a: sudo npm install socket.io


#2

Hey mdorre,

Those are great links! Jasna is actually our web developer here, that’s a personal project of hers :slight_smile:

CloudBrain was recently used in a really amazing exhibit featuring Muse at the SF Exploratorium: http://www.explorecogtech.com/media.html

All the data available from Muse is described here: https://sites.google.com/a/interaxon.ca/muse-developer-site/museio/osc-paths/osc-paths---v3-6-0

…including the relative/absolute/session scores. Take a look and let me know if you have any questions. Their definition and application have been discussed quite a bit on the forums too, so feel free to take a look around here.

For your question regarding interactive/control applications, typically what people do is construct a classifier using some fairly well-established machine learning techniques. To learn more about Brain Computer Interfaces, you should check out our Intro to BCI and EEG page (formerly called Intro to Brains). There is a bunch of helpful information listed there, especially if you are interested in classifiers and signal processing techniques (FFTs, for instance), like you’ve mentioned.


#3

Hey mdorre,

Let me know if you have questions about setting up or using the web library. I have plans to extend it much further (the current version was just a weekend project) so feedback is always welcome!


#4

When you say classifier, would something like an independent component analyser be included?


#5

I was really just referring to machine learning techniques in general. ICA is often used to extract features in EEG analysis, though, so in that sense it’s an example of such a technique.