Hi, There are differing opinions on the appropriateness of MGTR at the present time (pending future alternatives). You may be interested in the following recent paper from Murphy and Fox: https://www.ncbi.nlm.nih.gov/pubmed/27888059
And, if you want to see some data on the effects of using it vs. not using it in HCP data specifically, you can see the following paper: http://www.ncbi.nlm.nih.gov/pubmed/27571276 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: [email protected] From: <[email protected]<mailto:[email protected]>> on behalf of "Glasser, Matthew" <[email protected]<mailto:[email protected]>> Date: Thursday, January 5, 2017 at 11:50 AM To: Joelle Zimmermann <[email protected]<mailto:[email protected]>>, Stephen Smith <[email protected]<mailto:[email protected]>> Cc: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [HCP-Users] global signal regression on HCP ICA FIX denoised BOLD? This is at your discretion, but we don’t typically recommend it. We are working on a better solution for global physiological noise that doesn’t replace a positive bias in correlations with a negative one. Another alternative that avoids the issue is to use partial correlation. Peace, Matt. From: <[email protected]<mailto:[email protected]>> on behalf of Joelle Zimmermann <[email protected]<mailto:[email protected]>> Date: Thursday, January 5, 2017 at 12:47 PM To: Stephen Smith <[email protected]<mailto:[email protected]>> Cc: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [HCP-Users] global signal regression on HCP ICA FIX denoised BOLD? Thanks Stephen. Was there GSR done on the HCP data at any point for the non-denoised version? If I wanted to do GSR myself on the HCP data, are there any recommendations that the HCP group has? Or global signal regressors that have been already processed? Or is this something that is at the discretion of each researcher afterwards? On Thu, Jan 5, 2017 at 12:00 PM, Stephen Smith <[email protected]<mailto:[email protected]>> wrote: Yes,. Cheers. On 5 Jan 2017, at 11:57, Joelle Zimmermann <[email protected]<mailto:[email protected]>> wrote: Hi HCPers, Is it correct that global signal regression was not done on the ICA FIX denoised fmri BOLD data? Thanks, Joelle _______________________________________________ HCP-Users mailing list [email protected]<mailto:[email protected]> http://lists.humanconnectome.org/mailman/listinfo/hcp-users --------------------------------------------------------------------------- Stephen M. Smith, Professor of Biomedical Engineering Head of Analysis, Oxford University FMRIB Centre FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK +44 (0) 1865 222726<tel:+44%201865%20222726> (fax 222717) [email protected]<mailto:[email protected]> http://www.fmrib.ox.ac.uk/~steve --------------------------------------------------------------------------- Stop the cultural destruction of Tibet<http://smithinks.net> _______________________________________________ HCP-Users mailing list [email protected]<mailto:[email protected]> 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 [email protected]<mailto:[email protected]> 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 [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
