[FieldTrip] covariance computation from ft_timelockanalysis

[Luke Bloy]

Hi All,

I'm interested in using lcmv to do a common mode differential beamformer.
My understanding, please correct me if I'm incorrect, is that the best way
forward would be to
1) compute a covariance matrix from a time window combining both active and
control windows.
2) use this combined covariance to make a common mode lcmv beamformer
3) apply this to both active and control windows separately
4) combine into some sort of psuedo T or NAI.

does this sound correct?

If so the main thing I'm unclear on is how to compute the covariance for 2
distinct time intervals? is this possible?

Thanks,
Luke
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