Re: [HCP-Users] projecting from volume to R440 template (subcortical and cerebellum)

[Harms, Michael]

Not sure if this will help your purposes, but the "HCP500-PTN" (Parcellation+Timeseries+Netmats) distribution includes the following: melodic_IC_sum.nii.gz:  ICA spatial maps projected from the surface into the volume, for reporting purposes. MNI152 space. I don't think we have any group ICA maps derived originally in the volume space since the group ICA was done using the FIX-cleaned CIFTI time series as inputs. cheers, -MH --  Michael Harms, Ph.D. ----------------------------------------------------------- Conte Center for the Neuroscience of Mental Disorders Washington University School of Medicine Department of Psychiatry, Box 8134 660 South Euclid Ave. Tel: 314-747-6173 St. Louis, MO  63110 Email: mha...@wustl.edu From: Yizhou Ma <maxxx...@umn.edu> Date: Sunday, March 1, 2015 10:23 PM To: Matt Glasser <glass...@wusm.wustl.edu> Cc: "hcp-users@humanconnectome.org" <hcp-users@humanconnectome.org> Subject: Re: [HCP-Users] projecting from volume to R440 template (subcortical and cerebellum) Thank you for your reply Dr. Glasser. I've read this recommendation elsewhere on the forum and your point is well taken. Yet in our case the purpose is a bit different. We are not trying to do any analysis but to compare the HCP ICA maps with classical maps that have been generated in the volumetric space. Although this may not be accurate, it'll offer us some insight into the HCP maps. On Sun, Mar 1, 2015 at 10:09 PM, Glasser, Matthew <glass...@wusm.wustl.edu> wrote: I would recommend mapping your individual subject data onto individual subject surfaces and then registering on the surface.  Volume to surface mapping onto a group average surface from a group average volume is not particularly accurate in comparison.  Once you average cortical data in the volume, you lose the ability to do accurate spatial localization to cortical areas.  Instead data can be easily mapped onto locations centimeters away in 2D from the correct location on the folded cortical sheet.  Also, group average surfaces are very blurry in many cortical regions because different people have different folding patterns that cannot be registered (e.g. some people can have two gyri where others have only one).  Thus, it’s really better to do your cortical analysis on the surface to begin with, as we do in the HCP with CIFTI.   Peace, Matt. From: Yizhou Ma <maxxx...@umn.edu> Date: Sunday, March 1, 2015 at 9:27 PM To: Timothy Coalson <tsc...@mst.edu> Cc: "hcp-users@humanconnectome.org" <hcp-users@humanconnectome.org> Subject: Re: [HCP-Users] projecting from volume to R440 template (subcortical and cerebellum) Hi, I am still looking forward to getting help on this issue. Is an "Atlas_ROIs.2.nii.gz" or similar files provided for volume to surface mapping onto R440 group template? If not, will there be any in the future? Thanks, Cherry _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org 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. If you have received this email in error, please immediately notify the sender via telephone or return mail. _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org 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. If you have received this email in error, please immediately notify the sender via telephone or return mail. _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org http://lists.humanconnectome.org/mailman/listinfo/hcp-users