News from the Human Connectome Project (HCP)
February 26, 2021
Lifespan 2.0 Release of HCP-Aging & HCP-Development Data
What’s new in the Lifespan 2.0 release?
Get Access and Download the data: Get started with the Data Access and Download Instructions for navigating NDA and using it's download tools. We've also created a wiki that details setup steps for downloading data via NDA's command line tools.
If you have trouble navigating the NDA for getting access or downloading the data using their tools do not hesitate to contact the NDA helpdesk. NDA needs your user feedback.
Want more information? Check
out our updated documentation to help with understanding the file structure and interpreting the data:
Join the Community. If you are actively using HCP data and tools, we encourage you to join and be active in the HCP-Users Google group, so that you can ask questions and tune in to technical discussions on issues that may be of interest. Once you have joined (posts from nonmembers are moderated to control spam), post questions to hcp-...@humanconnectome.org.
Thanks again for your interest in HCP Lifespan and enjoy the data!
Best,
Lifespan consortia for HCP-Aging & HCP-Development and the Connectome Coordination Facility
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On Sep 14, 2021, at 14:48, Yen-Wen Chen <yen-we...@stonybrook.edu> wrote:
Hello Jenn,
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This isn’t really an issue for external users. We’ll be providing data that addresses it.
Matt.
To view this discussion on the web visit https://groups.google.com/a/humanconnectome.org/d/msgid/hcp-users/93ea72e9-cfde-4c51-a0d4-eafd4193c269n%40humanconnectome.org.
Yes, the concern about the fiducial marker applies to the diffusion (dMRI) data of HCP-A as well. I don’t recall seeing the marker ever showing up well in the gradient echo fMRI scans. Do you have such an example?
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Michael Harms, Ph.D.
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Associate Professor of Psychiatry
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: 'Yen-Wen Chen' via HCP-Users <hcp-...@humanconnectome.org>
Reply-To: "hcp-...@humanconnectome.org" <hcp-...@humanconnectome.org>
Date: Thursday, February 17, 2022 at 1:59 PM
To view this discussion on the web visit https://groups.google.com/a/humanconnectome.org/d/msgid/hcp-users/93ea72e9-cfde-4c51-a0d4-eafd4193c269n%40humanconnectome.org.
Just to elaborate, it is an issue that external users would need to be concerned about if they are trying to process the ‘unprocessed’ dMRI data from scratch themselves.
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Michael Harms, Ph.D.
-----------------------------------------------------------
Associate Professor of Psychiatry
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: "Glasser, Matt" <glas...@wustl.edu>
Reply-To: "hcp-...@humanconnectome.org" <hcp-...@humanconnectome.org>
Date: Thursday, February 17, 2022 at 2:12 PM
To: "hcp-...@humanconnectome.org" <hcp-...@humanconnectome.org>
Cc: "Elam, Jennifer" <el...@wustl.edu>
Subject: Re: [hcp-users] Re: Lifespan 2.0 HCP-Aging & HCP-Development Release
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To view this discussion on the web visit https://groups.google.com/a/humanconnectome.org/d/msgid/hcp-users/D0E24B58-CA0C-4F09-961D-F16FD200D033%40wustl.edu.
I wouldn’t recommend they do that.
Matt.
To view this discussion on the web visit https://groups.google.com/a/humanconnectome.org/d/msgid/hcp-users/F74C4B24-AE67-46FC-B50F-EC93DBA7736A%40wustl.edu.
I’m sorry, but we are working through the issue ourselves, and we don’t have the bandwidth to provide further guidance and details at this time.
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Michael Harms, Ph.D.
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Associate Professor of Psychiatry
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
To view this discussion on the web visit https://groups.google.com/a/humanconnectome.org/d/msgid/hcp-users/418b4f53-4bcf-4861-aac2-2522248f98b3n%40humanconnectome.org.
Actually, there is one piece of simple guidance I can provide, which is that this issue only impacts the data collected at UMN (for HCP-A and HCP-D) and Harvard (HCP-D).
Cheers,
-MH
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Michael Harms, Ph.D.
-----------------------------------------------------------
Associate Professor of Psychiatry
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
To view this discussion on the web visit https://groups.google.com/a/humanconnectome.org/d/msgid/hcp-users/42C565CB-4377-4E4C-9CB4-69274E2CF7F4%40wustl.edu.
You should wait till we handle it. The issue is complicated and should only be handled once correctly by folks who know the intricacies of the problem and have the inside information about which scans are affected, etc. It has taken a while to address the issue precisely because it is complicated and needs to be done carefully to be done well.
Overall, it is not a best practice for folks to be processing the unprocessed HCP data or reprocessing the data for most studies. Such reprocessing should only be limited to rare methods studies that are trying to improve upon what the HCP did (e.g., to compare a new/better method with standard HCP processing). Otherwise, you are potentially contributing to reproducibility issues in neuroimaging. HCP processing has been carefully thought out, drawing from the expertise of a wide variety of field experts and will fit the needs of most studies. Most individual investigators don’t have this level of multi-modal methods expertise themselves, aren’t particularly interested in the details of the methods and the particulars of the relevant issues (being more interested instead in whatever question they want to use the data for), and will not make as good choices as a result. I see these kinds of unforced errors again and again in peer review of studies using HCP data.
To view this discussion on the web visit https://groups.google.com/a/humanconnectome.org/d/msgid/hcp-users/418b4f53-4bcf-4861-aac2-2522248f98b3n%40humanconnectome.org.
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
el...@wustl.edu
www.humanconnectome.org