[Freesurfer] visualization, heatmap

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Dear Freesurfer team,

I noticed that some studies/publications add figures with heatmaps to visualize the significant cortical results (after correction), others do not.

We tried to use the heat map (from yellow/red to dark blue/light blue) to visualize the group differences using Freeview but after correcting for multiple corrections (after mri_glm we used Monte Carlo simulation), we are not sure how to do that. Only the sig.mgh file can be visualized that way, right? Or that was available in tksurfer but not in Freeview? https://secure-web.cisco.com/1iHssxc0c4EPn_NgIsbQnxACsBkIj4sWVm7WSdle6CMXnC7...

Is tksurfer still available? We use Freesurfer 7.1.1.

Thank you for your help in advance!

Eszter