Re: [HCP-Users] Noise in rfMRI

2017-10-17 Thread Romuald Janik
w.biorxiv.org/content/early/2017/09/27/193862 > > Peace, > > Matt. > > From: <hcp-users-boun...@humanconnectome.org> on behalf of Romuald Janik < > romuald.ja...@gmail.com> > Date: Monday, October 16, 2017 at 12:15 PM > To: "hcp-users@humanconnectome.org&q

[HCP-Users] Noise in rfMRI

2017-10-16 Thread Romuald Janik
Hi, I wanted to ask a couple of questions on the sources of noise which can still interfere with true neural signal in rfMRI HCP data. My main question is in fact 3) below 1) Are the physiological (cardiac and respiratory) sources regressed out? It was not completely clear to me in the

Re: [HCP-Users] rfMRI data files

2017-10-04 Thread Romuald Janik
Hi, Just to follow up on your answer and understand better - does the encoding direction introduce some bias (i.e. I mean some non neural component) into the signal? If it is necessary to analyze an equal amount of each direction that means that some effect cancels out? Is it known what it is? Is

Re: [HCP-Users] Surfaces, coordinates and beginner questions

2017-10-04 Thread Romuald Janik
Thanks for the detailed explanations! I have just one follow up question regarding this point: On Tue, Oct 3, 2017 at 11:57 PM, Timothy Coalson wrote: > > > Some techniques like hyperalignment use this "correspondence" concept > aggressively, and allow you to have

[HCP-Users] Surfaces, coordinates and beginner questions

2017-10-03 Thread Romuald Janik
Hi, I have recently started to look at the HCP single subject rfMRI data and I have a couple of beginner questions: 1) What is the difference between the various files (I downloaded just the FIX-compact version) in 100307/MNINonLinear/Results/rfMRI_REST1_LR? Is the one with MSMAll the most