How to extract the connectivity values by region?

[Raymundo.Cassani]

Once you have computed the desired connectivity metric, the connectivity matrix can be retrieved with this:

Visualize Connectivity matrix using imagesc

Hi @sugata_hisato, The connectivity matrix (TF field) is saved as: [Nr x Ntime x Nfreq]. Nr represents the connectivity between two files, thus Na x Nb. However, the relation between Na x Nb and Nr may not be direct as it's optimized to save storage space for some connectivity metrics. https://neuroimage.usc.edu/brainstorm/Tutorials/Connectivity#On_the_hard_drive E.g. in correlation, as corr(a,b) == corr(b,a) only one value is saved. In your case 271*271 = 73441 elements; then the upper tr…

There are plenty resources on writing data from Matlab to Excel, for example:

Write Data to Excel Spreadsheets - MATLAB & Simulink

Check this tutorial for more info on connectivity metrics in Brainstorm
https://neuroimage.usc.edu/brainstorm/Tutorials/Connectivity