I think I figured it out but I want to double check. I am generating group-average map for my subjects using isxconcat-sess command which generates ces maps for each time frame. I think these maps are what I wanted. Right? If you still have other solutions that you think may generate more reliable results, I am eager to know. For instance, is there anyway to fit a model as we do for spmhrf or fslhrf, but just for the negative peak?
Regards > That's the problem Doug. I have already generated the FIR model but how > can > I show the sig MAP for one "particulat time point". What are the other > ways? > > > On Wed, Apr 10, 2013 at 4:05 PM, Douglas N Greve > <gr...@nmr.mgh.harvard.edu>wrote: > >> Hi Shahin, there are several ways that you could do it. The one that >> immediately comes to mind is to use an FIR and then test for a >> difference >> at a particular post stimulus time point. >> doug >> >> >> >> >> On 04/10/2013 03:54 PM, SHAHIN NASR wrote: >> >>> Hi, >>> I want to generate a map to show the significant difference >>> between >>> HRF undershoot (negative peak of activity) between two conditions >>> independent from the positive peak. Is there anyway, to generate this >>> map? >>> >>> P.S.: Please note that I need a map and not a time course graph. >>> >>> >>> -- >>> Shahin Nasr >>> >>> PhD in Cognitive Neuroscience >>> Martinos Imaging Center, MGH >>> Harvard Medical School >>> >> >> -- >> 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<http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> >> FileDrop: >> www.nmr.mgh.harvard.edu/**facility/filedrop/index.html<http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> >> Outgoing: ftp://surfer.nmr.mgh.harvard.**edu/transfer/outgoing/flat/** >> greve/ <ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/> >> >> >> > > > -- > Shahin Nasr > > PhD in Cognitive Neuroscience > Martinos Imaging Center, MGH > Harvard Medical School > > > > -- > Shahin Nasr > > PhD in Cognitive Neuroscience > Martinos Imaging Center, MGH > Harvard Medical School > _______________________________________________ > 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 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.
