On 04/12/2016 04:16 PM, Afzal, Afsana wrote: > The source data is from a gambling task that has multiple levels of risk and > reward. The offset refers to the risk level and the slope refers to the > monetary reward for that particular risk level. > > We were doing some parametric modulation in the first level analysis. For the > second levels, currently I'm just looking at the offset values which is why > the slope rows are all zeros. I don't think this makes sense. If you don't want it there, then it must not be in the FSGD file. What are you trying to test at the group level? > > Please let me know if that makes sense, > > Afsana > > ______________________________ > Afsana Afzal > Clinical Research Coordinator > Massachusetts General Hospital > Division of Neurotherapeutics > Department of Psychiatry: Neurosciences > 149 13th St, Room 2612 > Charlestown, MA 02129 > Phone: 617-643-5129 > Fax: 617-726-4078 > > ________________________________________ > From: freesurfer-boun...@nmr.mgh.harvard.edu > [freesurfer-boun...@nmr.mgh.harvard.edu] on behalf of Douglas N Greve > [gr...@nmr.mgh.harvard.edu] > Sent: Monday, April 11, 2016 11:19 AM > To: freesurfer@nmr.mgh.harvard.edu > Subject: Re: [Freesurfer] Group level analysis: Specifying contrasts > > What is your source data? It looks like you have two time points per > subject, but the names of "offset" and "slope" suggest some preprocessing? > > Input hc001-lRsk_offset hc001 1 0 0 > Input hc001-lRsk_slope hc001 0 0 0 > Input hc001-mRsk_offset hc001 0 1 0 > Input hc001-mRsk_slope hc001 0 0 0 > Input hc001-hRsk_offset hc001 0 0 1 > Input hc001-hRsk_slope hc001 0 0 0 > > > > On 04/11/2016 10:09 AM, Afzal, Afsana wrote: >> Hi Doug, >> >> I've attached the fsgd file and the contrast matrix file. Thanks for your >> help! >> >> - Afsana >> >> ______________________________ >> Afsana Afzal >> Clinical Research Coordinator >> Massachusetts General Hospital >> Division of Neurotherapeutics >> Department of Psychiatry: Neurosciences >> 149 13th St, Room 2612 >> Charlestown, MA 02129 >> Phone: 617-643-5129 >> Fax: 617-726-4078 >> >> ________________________________________ >> From: freesurfer-boun...@nmr.mgh.harvard.edu >> [freesurfer-boun...@nmr.mgh.harvard.edu] on behalf of Douglas N Greve >> [gr...@nmr.mgh.harvard.edu] >> Sent: Friday, April 08, 2016 12:07 PM >> To: freesurfer@nmr.mgh.harvard.edu >> Subject: Re: [Freesurfer] Group level analysis: Specifying contrasts >> >> I don't know what you mean, can you just send the header of the fsgd >> file and the contrast matrix? >> >> On 04/04/2016 11:20 AM, Afzal, Afsana wrote: >>> Hi, >>> >>> I want to perform a linear regression for a task with 3 different risk >>> conditions (low, medium, high) with the following linear trend: low = >>> 1, medium = 2, high = 3. >>> >>> Right now I'm specifying the above weighted under each risk condition >>> in my contrast matrix. Is this the correct approach? I want to make >>> sure I am calculating a regression and not a weighted average. >>> >>> Thank you for your help, >>> >>> Afsana >>> >>> >>> ______________________________ >>> *Afsana Afzal* >>> Clinical Research Coordinator >>> Massachusetts General Hospital >>> Division of Neurotherapeutics >>> Department of Psychiatry: Neurosciences >>> 149 13th St, Room 2612 >>> Charlestown, MA 02129 >>> Phone: 617-643-5129 >>> Fax: 617-726-4078 >>> >>> >>> _______________________________________________ >>> Freesurfer mailing list >>> Freesurfer@nmr.mgh.harvard.edu >>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >> -- >> Douglas N. Greve, Ph.D. >> MGH-NMR Center >> gr...@nmr.mgh.harvard.edu >> Phone Number: 617-724-2358 >> Fax: 617-726-7422 >> >> Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting >> FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 >> www.nmr.mgh.harvard.edu/facility/filedrop/index.html >> Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ >> >> _______________________________________________ >> Freesurfer mailing list >> Freesurfer@nmr.mgh.harvard.edu >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >> >> >> _______________________________________________ >> Freesurfer mailing list >> Freesurfer@nmr.mgh.harvard.edu >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > -- > Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu > Phone Number: 617-724-2358 > Fax: 617-726-7422 > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 > www.nmr.mgh.harvard.edu/facility/filedrop/index.html > Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > >
-- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
