Issue exporting preprocessed ICA pruned EEGlab files to Brain Vision

[vanidewan]

We appear to be having an issue exporting EEGlab files to continue analysis in Brain Vision Analyzer. After chatting with Brain Vision Analyzer support, we've identified a few issues: 1, BVA is allegedly unable to process 'boundary' markers from EEGlab, which have a 'duration', reflecting manually cleaned data from EEGlab. This doesn't appear to be consistent across participants, as some participants are manually cleaned (w boundary markers) and are successfully processed in BVA, but BVA support alleges the boundary markers are an issue 2, when exporting from EEGlab, additional segments/markers are unexpectedly created for some participants but not all. The participants all ran on the same stimuli.

We've uploaded 4 participants that crash at different times in the process, to try to compare the files and see what differentiates them.

Couldn't attach the files themselves here, so they can be accessed at this Drive link, note there's a ReadMe as well, describing each file's preprocessing, whether it works/doesn't work in BVA, and whether it has the correct or incorrect number of segments: https://drive.google.com/drive/folders/1jt4jfMXFA37d9K9Ggshqo90nqViqOxJk?usp=drive_link

[arnodelorme]

Thank you for reporting that. Could you edit the event marker file (.mrk) that is exported. This is a text file. Could you change the boundary events (or remove them) to assess exactly what needs to be fixed?