Re: [HCP-Users] Phase Encoding left-to-right and right-to-left

To Steve's point and the issue of memory:  A critical distinction is whether you are intending to work with dense connectomes or parcellated connectomes.  In the context of parcellated connectomes, both Steve and myself have found a small advantage in reproducibility if you compute a

Re: [HCP-Users] Qdec questions

I don't know if this is it, but off the top of my head, how exactly did you set up your SUBJECTS_DIR?  I assume that you are trying to aggregate stats into a table across a number of subjects after having downloaded the "Structural Extended" packages?  The location of the FS data in the HCP

Re: [HCP-Users] phase encoding and group ICA

As a brief follow-up to this:  As you see from Steve's pasted code, the order of the time series in the PTN is based solely on the file name in ConnectomeDB.  Importantly, nothing in the REST{1,2}_{LR,RL} naming tells you whether the LR run came first, or vice-versa.  All you know for sure

Re: [HCP-Users] Phase Encoding left-to-right and right-to-left

Ok, but I thought we were talking about correlations here?  Another reason for Joelle to be explicit about what she is wanting to do. --  Michael Harms, Ph.D. --- Conte Center for the Neuroscience of Mental Disorders Washington

Re: [HCP-Users] CIFTI and NIFTI -parcellating rfMRI

Because the surface data in our Cifti files is mapped from the volume using subject-specific surfaces, it avoids mixing csf and white matter data into the cortical signal. With a volume parcellation, in order to do something similar, you would need to parcellate each individual somehow, or have

Re: [HCP-Users] CIFTI and NIFTI -parcellating rfMRI

Hi Tim, Thanks for your response. Within the Resting State fMRI 1 preprocessed in the 500 Subjects + MEG2, I see the rfMRI_REST1_LR.nii.gz, which I presume is the Nifti-1 data. And then I see an rfMRI_REST1_LR_Atlas.dtseries.nii - Is that the dtseries.nii Cifti you refer to? Could you explain a

Re: [HCP-Users] Qdec questions

You might want to cross-post this to the FreeSurfer list unless there is someone on the HCP list familiar with qdec, assuming that you've downloaded the structural extended packages. Peace, Matt. From: > on

Re: [HCP-Users] Phase Encoding left-to-right and right-to-left

Hi Michael - for raw covariances - summing covariances is equivalent to temp concat first. Cheers > On 25 Nov 2015, at 17:29, Harms, Michael wrote: > > > To Steve's point and the issue of memory: A critical distinction is whether > you are intending to work with dense