Re: [HCP-Users] Follow-up to: Obtaining the MNI coordinates of cluster peaks in the melodic_IC.dscalar.nii ICA maps

Thanks Tim and Michael, I am thinking about doing some work with some statistics derived from tractography (starting from the vertices on gray white matter interface and then projecting those statistics onto their respective vertices) My thought however, is whether the MSMAll (or functional

Re: [HCP-Users] Follow-up to: Obtaining the MNI coordinates of cluster peaks in the melodic_IC.dscalar.nii ICA maps

On Thu, Aug 3, 2017 at 9:03 AM, Claude Bajada wrote: > Hi all, > > I am starting a new thread because while my question is related to the one > ask, it is tangential. > > Can I confirm that what you mean by not averaging surfaces is that one > should not average the

Re: [HCP-Users] Follow-up to: Obtaining the MNI coordinates of cluster peaks in the melodic_IC.dscalar.nii ICA maps

To explain further, the MSMAll registered surfaces have vertex indices matched by nearby functional features, not by their position on folding patterns. Creating a group-average MSMAll surface is essentially asking the question "for this functional feature, where is it, on average". Based on

Re: [HCP-Users] Obtaining the MNI coordinates of cluster peaks in the melodic_IC.dscalar.nii ICA maps

Thanks Tim and Matt for the detailed responses. I agree that mapping to volumes is sub-optimal. Our goal is to identify coords to be used as targets for brain stimulation with TMS. We need MNI coords for neuronavigation. Given the extent of the TMS field, we have some tolerance for imprecisions

Re: [HCP-Users] Follow-up to: Obtaining the MNI coordinates of cluster peaks in the melodic_IC.dscalar.nii ICA maps

Creating an “average-surface” is fine, and we in fact to that and provide it as part of our “group-average” data (available for download from ConnectomDB). But, those average surfaces are just a “back-drop” for overlaying/visualizing the metric/cifti data, and aren’t intended to be used as a

[HCP-Users] Follow-up to: Obtaining the MNI coordinates of cluster peaks in the melodic_IC.dscalar.nii ICA maps

Hi all, I am starting a new thread because while my question is related to the one ask, it is tangential. Can I confirm that what you mean by not averaging surfaces is that one should not average the vertex points across gifti surfaces to create a so-called "average surface" Can I ask then,