custom neurofeedback experiment

Concerning processing components: filters, file load/save, visualizations, communication ...
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svarma
Posts: 3
Joined: Tue Nov 12, 2019 7:45 pm

custom neurofeedback experiment

Post by svarma »

Hello,

I am currently designing my lab's first neurofeedback training protocol, and require some assistance.
We want to use visual feedback in the form of a colored square that changes saturation based on a person's relative alpha power increase.
We have a Biosemi Active Two system, which is compatible with openvibe.
I can program at a beginner to intermediate level in Matlab, but am having a very hard time understanding how to implement the matlab scripting boxes to design my stimulation.
I was wondering if anyone could help me with this? I use Matlab r2015b

I would greatly appreciate the help,
Sonia

svarma6@uwo.ca

Thibaut
Posts: 144
Joined: Wed Oct 31, 2018 9:14 am

Re: custom neurofeedback experiment

Post by Thibaut »

Hi sonia,
So first you do not need Matlab.^^
Moreover, for real time, matlab is not the fastest language.
What I advise you is first to recover your signal and recover your Alpha (with a channel selection and a temporal filter). Then display the signal.
For your Neurofeedback protocol, you could use Python to create a script that will decide which color to display and use OpenCV to display your color square. Almost 2 years ago I made a Neurofeedback protocol but I mostly coded new boxes for that (and the code is not optimized I just started in OpenViBE ^^).
Here is a git. https://github.com/tmonseigne/NEUROPERF
And the associated article if it can help you https://hal.inria.fr/hal-02130755
Thibaut

svarma
Posts: 3
Joined: Tue Nov 12, 2019 7:45 pm

Re: custom neurofeedback experiment

Post by svarma »

Thank you for your help
I will try this and post back the result
:)
Sonia

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