Hello,
I want to subdivide Desikan & Killiany atlas into Ng = 488 regions of interest (ROI), each covering
approximately 5 cm2 of surface area. then, I want to export this surface to matlab and compute Laplacian of this mesh.
please help me.
Hello,
You can do this from the Scout tab. Select the Desikan-Killiany atlas from the dropdown, then go to Atlas -> Subdivide atlas -> Area, and enter 5 cm2. You can then export this to Matlab by going to Scout -> Export to Matlab. This gives you a list of vertices IDs for each ROI. You can match them to their corresponding coordinates by exporting your cortex file (Go to anatomy mode -> right click on your selected (green) cortex file -> File -> Export to Matlab. The vertices’ coordinates are in the Vertices matrix.
I hope this helps,
Martin
Thanks for the advice.
I used your method. Unfortunately, I encountered this error in Atlas -> Subdivide atlas -> Area, and enter 5 cm2.
That’s odd, I can’t reproduce your issue and it’s not clear to me from the code what is the problem. Does this happen with other atlases / cortex files?
I tried this for another atlas, but there was no problem.