are you sure it's registered well to the anatomical/surface? On Thu, 7 Jul 2011, Michelle Umali wrote:
> Hi Doug, > The eccen and polar maps look ok, although activation tends to be > limited to the occipital poles and lateral surface not really along > the calcarine. > > Is it possible to find out how the colors in the eccen and polar > images correspond to positions in the stimulus using rtview? There's > no legend. > > Thanks. > Michelle > > > > Quoting Douglas N Greve <gr...@nmr.mgh.harvard.edu>: > >> Hi Michelle, do the eccen and polar maps look ok? Also, I would >> probably smooth them a little bit. The field sign calculation is >> basically a spatial derivative so it can be sensitive to noise. >> doug >> >> Michelle Umali wrote: >>> Dear all, >>> I've been having issues with my fieldsign images all I get are >>> speckles. I did the following and did not get any errors: >>> >>> 1) ran recon-all -all >>> 2) cut and saved occipital patches (rh.occip.patch.3d) from inflated surface >>> 3) ran mris_flatten -w 0 distances 20 7 rh.occip.patch.3d >>> rh.occip.patch.flat >>> 4)mkanalysis-sess -rtopy.self.rh -surface self rh -TR 2 -retinotopy >>> 48 paradigm >>> rtopy.par -nskip 4 fwhm 0 >>> 5) selxavg3-sess -a rtopy.self.rh -s sj09 >>> 6) fieldsign-sess -a rtopy.self.rh -occip -s sj09 >>> >>> When I looked at the fieldsign map using: >>> 7) tksurfer-sess -a rtopy.self.rh -s sj09 -fieldsign >>> >>> all I got were blue and red speckles. The polar and eccentricity >>> maps seemed ok. >>> >>> >>> Any help would be great. >>> >>> Michelle >>> _______________________________________________ >>> 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: www.nmr.mgh.harvard.edu/facility/filedrop/index.html >> >> >> >> 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. > > > > _______________________________________________ > 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
