Exporting scouts for epoched data

[mglassen]

Hi all,

I’m working with epoched data imported from eeglab lab. I’m importing the data into brainstorm, moving to source space and the exporting out the scout data. Once the scout data is exported I would like to place this data back in the eeglab structure. My question was do the numbers in the scout filename correspond to the original epoch? For instance, if I have 130 epochs when I extract scouts there are 130 files created (matrix_scout_xxx) with xxx being a number that increases by one for each file. Does the file with the lowest number correspond to the first imported epoch, and the one with the highest correspond to the last epoch? I just want to make sure before importing source data back into eeglab.

Best,
Mike

[Francois]

My question was do the numbers in the scout filename correspond to the original epoch?

It depends on the order of the files in input... Maybe you can find the information of the original source file in the file history (right-click > File > View file history)

A simpler approach, if you want to be sure of what you manipulate, would be to use the process "Extract > Scouts time series" with the option "Concatenate output in one unique matrix". In the output "matrix" file, the field "Description" would indicate where each signal is coming from.