How to extract the connectivity values by region?

[Zouglechr]

Hello,
In a MEG study, I want to extract the connectivity values by region into an Excel file in order to calculate the correlation between them and some psycho scores.
Could you please tell me how to proceed ?
Thank you by advance for the help you can provide,

[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