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help > RE: voxel-to-voxel level connectivity matrix
Jul 29, 2014 12:07 AM | Alfonso Nieto-Castanon - Boston University
RE: voxel-to-voxel level connectivity matrix
Dear Yifei,
The typical way this is done is by using a considerably lower-resolution resampling of the functional data to bring the number of "voxels" to something more manageable (e.g. closer to ~1000 or below). In CONN the simplest way to do this is to create a ROI parcellation with your desired "low-resolution" parcels (e.g. 10mm cubes) and then perform standard ROI-to-ROI analyses (which will create, and allow you to analyze, your desired voxel-to-voxel connectivity matrices).
Hope this helps and let me know if you would like me to further clarify any of this
Best
Alfonso
Originally posted by Yifei Zhang:
The typical way this is done is by using a considerably lower-resolution resampling of the functional data to bring the number of "voxels" to something more manageable (e.g. closer to ~1000 or below). In CONN the simplest way to do this is to create a ROI parcellation with your desired "low-resolution" parcels (e.g. 10mm cubes) and then perform standard ROI-to-ROI analyses (which will create, and allow you to analyze, your desired voxel-to-voxel connectivity matrices).
Hope this helps and let me know if you would like me to further clarify any of this
Best
Alfonso
Originally posted by Yifei Zhang:
Dear all,
I am wondering how to get the voxel-to-voxel level connectivity matrix. According to the previous discussion, it needs a lot of calculation for the voxel-to-voxel level matrix and conn will not save it during the calculation, but there are several articles using this method. Can anyone tell me how or where I can find a tool to realise this analysis?
Any help would be appreciated!
Best regards,
Yifei
I am wondering how to get the voxel-to-voxel level connectivity matrix. According to the previous discussion, it needs a lot of calculation for the voxel-to-voxel level matrix and conn will not save it during the calculation, but there are several articles using this method. Can anyone tell me how or where I can find a tool to realise this analysis?
Any help would be appreciated!
Best regards,
Yifei
Threaded View
| Title | Author | Date |
|---|---|---|
| Yifei Zhang | Jul 24, 2014 | |
| Alfonso Nieto-Castanon | Jul 29, 2014 | |
| Alfonso Nieto-Castanon | Jul 29, 2014 | |
| Pravesh Parekh | Feb 29, 2016 | |
| Alfonso Nieto-Castanon | Mar 14, 2016 | |
| Pravesh Parekh | Mar 14, 2016 | |
| Yifei Zhang | Jul 29, 2014 | |