Thanks, Doug. I added (-4s) delay and plotted the data but I got the same delay as no shift. Also I did (+4) delay and lost most of the activation.
Do you have any recommendations? Thanks, Sarah On Wed, Mar 28, 2018 at 4:39 PM, Douglas N. Greve <dgr...@mgh.harvard.edu> wrote: > You can use the -delay flag in mkanalysis-sess > > doug > > > On 03/28/2018 05:35 PM, Sarah Cole wrote: > > Hi Doug, > > > > I have a block design experiment. After analyzing the data and > > plotting the response magnitude across the TRs, we see that there is a > > systematic lag in the response. For example, in a 16s block (TR=2s), > > at TR-1 and TR-2 the response goes down and then starts rising from > > TR-3. This is consistent across the subjects and blocks. > > > > We used to shift our raw data by 2 TRs when we were using SPM. > > > > How can we do this in FreeSurfer? > > > > Thank you, > > > > Sarah > > > > > > _______________________________________________ > > 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. > >
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