[Eeglablist] Help with ERP study

[Sonia Mariotti]

Hi all,

I created a study in eeglab and wanted to run LIMO, but I run into some issues. I'm new to eeglab and to coding as well, so I've mostly used the GUI and a little bit of code from chatGPT. You can see in the screenshot how I built the study. The data was segmented and pre-processed in Brain Vision Analyzer, so I'm not running ICA here - is that fine?
I have 4 recordings per participants that correspond to the 4 tasks they did. I wanted to compare the EEG signal in these tasks to see if there is any difference by running a 2x2 design. When I go to Study > Edit study design, I don'manage to select the two factors of interest, which are task condition and task type. I wonder if it's because of how I organised the recording into the study, as I cannot retrieve these two factors in the list of options (I only get to select the four conditions or the markers I assigned to each trial).

I have managed to pre-compute and plot channel measures, but I wanted to run statistical analysis. When I try to run LIMO an error message pops up: No results files were found and ask if I want to browse for a .mat file, which I don't think I have.

Thanks for your help!