Warning during LCMV Beamformer: "Adding missing events fields: hedTags"

Discussions
1

I re-computed LCMV Beamformer images for one participant in a large dataset, and got “Warning: Adding missing events fields: hedTags”. This warning was returned on the command line once per epoch that was input into the beamformer process. Note that this participant was previously preprocessed using an older version of Brainstorm. I looked at the file contents and couldn’t find what “hedTags” refers to - there were no event markers labeled as “hedTags”. The beamformer images look just fine.

I am just wanting to confirm that I don’t need to worry about this warning for the purpose of submitting the beamformer images to PSD and analyzing further. Is there any issue here?

image
image835×923 64 KB

2

Hello,

Yes, there is nothing to worry about here. This warning is linked to the recently added support for HED tags (a standardized and machine-readable way to describe events) Events: Add support for HED tags by anna-zai1 · Pull Request #817 · brainstorm-tools/brainstorm3 · GitHub

The warning is just here to indicate that the new field was added to the file. You can see more information about this field in the tutorial here: https://neuroimage.usc.edu/brainstorm/Tutorials/HedTags

3

excellent. thanks so much!