Hi Freesurfers,
I did an FIR analysis to get the BOLD response over time, the following way mkanalysis-sess -analysis Afterimage_FIR2.rh -surface self rh -native -fwhm 5 -paradigm ShapeAE_New.par -event-related -polyfit 1 -mcextreg -TR 1.000 -nconditions 8 -force -fsd bold -fir 4 14 I then generated the relevant contrasts, ran the funcroi-config command, and the func-roi-table-sess command to create 14 files for my ROI, each containing the signal value at 14 different time points. i.e. funcroi-table-sess -sf sessid -roi Labels/rh.V1 -c condition1 -map cespct -o ROI/frame0 -frame 0 funcroi-table-sess -sf sessid -roi Labels/rh.V1 -c condition1 -map cespct -o ROI/frame1 -frame 1 . . . funcroi-table-sess -sf sessid -roi Labels/rh.V1 -c condition1 -map cespct -o ROI/frame13 -frame 13 My question is this: To what time point (relative to stimulus onset) does the value in the frame0 file correspond? As I understand it, the first 4 frame values should correspond to activity pre-stimulus. However, this expectation is not corroborated by the timing and pattern of the BOLD response I am observing. I would appreciate any guidance on this issue. Thanks, Cesar Echavarria _______________________________________________ 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.
