Save TFCE results as ROI/mask for subsequent analysis

[lyhoo23618-csu]

Hello everyone,

I used CAT12 to perform group comparisons for cortical thickness with TFCE-based FWE correction, resulting in two output files: T_log_pFWE_0001.dat and T_log_pFWE_0001.gii. My goal is to use the regions showing group differences as seed masks for a functional connectivity analysis. To do this, I planned to convert the .dat and .gii files into a single .gii file, which can then be converted into files that processed in other software like Freesurfer.

I attempted to use the CAT_SurfConvert.zip tool to convert the files. However, I ran into an issue during the conversion step. My command was:

/CAT_SurfConvert T_log_pFWE_0001.dat T_log_pFWE_0001.gii

The error message is: “input_freesurfer: Unknown magic identifier: 12174918.”

Any insights on this issue would be appreciated. And is there a better way to achieve my goal?

Bests,
Hao Li