Hi experts

I'm trying to extract ROI timecourses after the preprocessing steps. I've found my way to the preprocessing folder and to the 'ROI_Subject001_Condition001.mat' files, however this is when I get a little confused. There are three sub-directories in the MAT file: data, d1_data and d2_data that each contain a number of cells that corresponds to the number of ROIs in my analysis (in this case, the number is 27). However, the matrix within in each cell is a lot shorter than the number of TRs in my experiment (36 rather than 127).

Can anyone help me work out what these values represent? Are they the average of the first 36 TRs of the scan for each ROI? Or are they a recalculation across the entire experiment (i.e. 127 TRs collapsed down into 36 values)?

Also, does anyone know what the data, d1_data and d2_data files are?

Thanks ahead of time for your help!

Mac