Fun with brainwaves, part 3: Here’s some code

The story so far: Realtime Brainwave Data with WPF and Fun with brainwaves, part 2.

So the code is finally somewhat presentable for public consumption. You can download it from here: Realtime Neurodata Display. If you have the Research Edition of the Emotiv SDK, this is what you’ll see:

EmoEngineClientLibrary displaying realtime brainwave data from the Emotiv headset.

The two most interesting features of this prototype are:

• Event-driven access to the Emotiv EmoEngine class;
• Multithreaded rendering of WPF controls.

I tried to make the EmoEngineClient as easy to use as possible: call the StartEmoEngine and StartDataPolling methods to be notified about changes in the neuroheadset device state and to receive new electrode data frames. You can use data binding to any of the convenient properties in the EmoEngineClient  and EmotivState classes.

The NeuroDataControl shows how to consume the electrode data that EmoEngineClient publishes. It creates a TimeSeriesControl for each data channel, each of which renders on its own thread. The UI is simple, but it demonstrates that it’s possible to keep up with the fire hose of data that streams from the neuroheadset.

There’s a lot left to do: Fast Fourier Transforms (getting there), contact quality for each channel  (almost there), optimizations…but it’s probably useful for anybody who wants to dive into the brainwave stream.

Buy your Research Edition SDK and download the EmoEngineClientLibrary to start viewing your brainwaves in realtime.

Technorati Tags: WPF,Visual Studio,brainwave,chaos,EEG,.NET Framework

Comments

• Anonymous
  March 25, 2010
  The comment has been removed
• Anonymous
  March 26, 2010
  Hi macias, Thank you for the question. I'm quite confident that the EPOC neuroheadset is producing solid data. The Emotiv folks have done a remarkable job with noise rejection, which makes getting good connections with the scalp surprisingly easy. Jim