Understanding the Noise Covariance Matrix More Deeply

Discussions
1

Dear Brainstorm Community,

Could someone please help me understand how the Brainstorm noise covariance matrices function? Are covariances between each electrode for each baseline time point averaged into a single matrix? If so, how is the matrix then applied to the rest of the data (the non-baseline data)?

Thank you!

MBG

2

Hi Marcel,

you might want to have a look at our recent paper:

http://www.sciencedirect.com/science/article/pii/S1053811914010325

it should give you some materials to understand the noise covariance estimation + whitening steps.

HTH
Alex