Hi Matt, thanks so much for all your work on HCP and for replying to my email, I really appreciate it (thank you to Jenn too!). I want to make sure I understand the sequence quickly:
1) wb_command -cifti-parcellate 2) wb_command -cifti-reduce <input> MEAN mean.dtseries.nii 3) wb_command -cifti-reduce <input> STDEV stdev.dtseries.nii 4) wb_command -cifti-math '(x - mean) / stdev' <output> -fixnan 0 -var x <input> -var mean mean.dtseries.nii -select 1 1 -repeat -var stdev stdev.dtseries.nii -select 1 1 -repeat 5) wb_command -cifit-merge 6) wb_command -cifit-correlation And then I would take this (giant) matrix and run my analyses on it with the brain connectivity toolbox (or the like). Thank you for your patience, Grace ________________________________ From: Glasser, Matthew <[email protected]> Sent: Wednesday, January 4, 2017 5:54 PM To: Elam, Jennifer; Shearrer, Grace; [email protected]; [email protected] Subject: Re: [HCP-Users] Creating Group Average Resting State fMRI You will need to parcellate the data first using wb_command -cifti-parcellate. A parcellation is available here: https://balsa.wustl.edu/file/show/3VLx Peace, Matt. From: <[email protected]<mailto:[email protected]>> on behalf of "Elam, Jennifer" <[email protected]<mailto:[email protected]>> Date: Wednesday, January 4, 2017 at 3:47 PM To: "Shearrer, Grace" <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [HCP-Users] Creating Group Average Resting State fMRI Hi Grace, This is a grayordinate x grayordinate "dense" connectome and it will be a large (30GB) resulting file. Grayordinates are surface vertices for both hemispheres + subcortical voxels (total of 91,282 grayordinates in our case). To learn more about this and CIFTI, I would look at Glasser et al. 2013.<http://www.sciencedirect.com/science/article/pii/S1053811913005053> <http://www.sciencedirect.com/science/article/pii/S1053811913005053> Best, Jenn Jennifer Elam, Ph.D. Scientific Outreach, Human Connectome Project Washington University School of Medicine Department of Neuroscience, Box 8108 660 South Euclid Avenue St. Louis, MO 63110 314-362-9387<tel:314-362-9387> [email protected]<mailto:[email protected]> www.humanconnectome.org<http://www.humanconnectome.org/> ________________________________ From: Shearrer, Grace <[email protected]<mailto:[email protected]>> Sent: Wednesday, January 4, 2017 2:16:48 PM To: Elam, Jennifer; [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]> Subject: Re: [HCP-Users] Creating Group Average Resting State fMRI Hi Jenn, oops the User list verification was going to my junk email. I just signed up though. I did see the wiki and it was helpful, I like this script though since it appears to loop through all the directories. I just wanted to make sure I was getting the final connectivity matrix. One other question, is the connectivity matrix voxelwise? Or is it connectivity based on a parcelation scheme? Thank you, Grace Grace Shearrer, PhD Post Doctoral Researcher Neuropsychology of Ingestive Behavior Lab University of North Carolina Chapel Hill ________________________________ From: Elam, Jennifer <[email protected]<mailto:[email protected]>> Sent: Wednesday, January 4, 2017 4:57 PM To: Shearrer, Grace; [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]> Subject: Re: [HCP-Users] Creating Group Average Resting State fMRI Hi Grace, You might also want to check out the instructions for creating individual and group average dense rfMRI connectomes in item #3 in the HCP Users FAQ on our wiki: https://wiki.humanconnectome.org/display/PublicData/HCP+Users+FAQ#HCPUsersFAQ-3.IseethatHCPdistributesgroupaveragedenseconnectomefiles.Doyoualsoprovideconnectivitymatricesforindividualsubjects? <https://wiki.humanconnectome.org/display/PublicData/HCP+Users+FAQ#HCPUsersFAQ-3.IseethatHCPdistributesgroupaveragedenseconnectomefiles.Doyoualsoprovideconnectivitymatricesforindividualsubjects?> Also, sign up for the HCP-Users list<https://www.humanconnectome.org/contact/#subscribe> to learn from other users and stay in the discussion. Best, Jenn Jennifer Elam, Ph.D. Scientific Outreach, Human Connectome Project Washington University School of Medicine Department of Neuroscience, Box 8108 660 South Euclid Avenue St. Louis, MO 63110 314-362-9387<tel:314-362-9387> [email protected]<mailto:[email protected]> www.humanconnectome.org<http://www.humanconnectome.org/> ________________________________ From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> on behalf of Shearrer, Grace <[email protected]<mailto:[email protected]>> Sent: Wednesday, January 4, 2017 1:24:49 PM To: [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]> Subject: Re: [HCP-Users] Creating Group Average Resting State fMRI Hi Dr. Bari, thank you so much for script this is very helpful. I just want to check that I understand. I would use your script to get the mean time series, standard deviation, and then demean the data. Then I would use a command like: wb_command -cifit-merge to then merge all my demeaned data into a a single file, then I would use: wb_command -cifit-correlation to get a correlation matrix from which I could begin to use a graph theory toolkit (like brain connectivity tool box). Does this make sense? This is my first time using CIFTI files and I am still trying to wrap my head around it. Thanks, Grace This question is based on the following thread: http://www.mail-archive.com/[email protected]/msg00448.html Grace Shearrer, PhD Post Doctoral Researcher Neuropsychology of Ingestive Behavior Lab University of North Carolina Chapel Hill _______________________________________________ HCP-Users mailing list [email protected]<mailto:[email protected]> http://lists.humanconnectome.org/mailman/listinfo/hcp-users _______________________________________________ HCP-Users mailing list [email protected]<mailto:[email protected]> http://lists.humanconnectome.org/mailman/listinfo/hcp-users ________________________________ The materials in this message are private and may contain Protected Healthcare Information or other information of a sensitive nature. If you are not the intended recipient, be advised that any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited. 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