Hello, I have a question considering the threshold settings while mapping functional data on a fiducial atlas. The data I've imported from SPM2 have a fwe corrected p-value of 0.05. What is the corresponding threshold in caret? Furthermore the loci (e.g. global maxima in SPM2)are not analogous (to those displaying maximum activation) in Caret. While mapping fmri to surface I chose SPM99, SPM2 or MEDx in LPI Orientation (.hdr) as the volume type and selected the Human.cloin in SPM2/MEDx Template Space Atlas. Was this incorrect? If not, what is the differnce in activation location due to?
Thanks in advance for any information! Meike Ramon > Hi Dr. Ramon, > > First, I should mention that we soon plan to release a new version of > Caret that not only revises the entire mapping interface, but also adds > support for the PALS_B12 (population-average landmark and surface based, > Buckner 12 individuals) atlas. The software and data are ready, but > David is sorting out some scientific issues. > > Meanwhile, I think the easiest way to map group data to the atlas is for > you to use the map_fmri_to_surface program. It might be available as an > option on your Caret Attributes: Metric menu. But for some Linux > platforms, the mapper hangs when it is launched this way. You can > launch the mapper by entering map_fmri_to_surface at the command line, > and it shouldn't hang. > > Then, the steps outlined in the Caret4.6 User's Guide and Tutorial Part > I > (http://brainmap.wustl.edu/caret/pdf/CARET_UsersGuide.03-06.Part-I.pdf), > page 36, should guide you through the process. Note that there are two > SPM volume types from which you can choose: SPM99, SPM2 in LPI > orientation or SPM2 in RPI orientation. If your SPM2-normalized output > is in radiological convention (i.e., analyze.flip=1 in spm_defaults.m), > then choose SPM2 in RPI orientation; otherwise, choose SPM99 or SPM2 in > LPI orientation. See http://brainmap.wustl.edu/help/mapper.html#spm for > other SPM mapping details. > > We will announce the release of the new Caret version on caret-announce, > once David has sorted out the remaining issues. > > Donna > > On 11/18/2004 07:13 AM, Meike Ramon wrote: > > >Hello Caret users, > > > >I am a complete novice with caret and would be more than greatful if > anybody > >could reply to my request. > >I am trying to map functional SPM2 data from a group study to a > structural > >atlas. I have tried via attributes:metric:map functional volume to metric > >and somehow I obviously have managed to import some data (hopefully > >correctly) - but when trying to repeat the process I failed. This was > >probably due to the fact that I'm not quite sure which individual steps > >exactly I must take and the necessary order. > >Thanks in advance for any information, > >Meike Ramon > > > > > > > > > > > _______________________________________________ > caret-users mailing list > caret-users@brainvis.wustl.edu > http://pulvinar.wustl.edu/mailman/listinfo/caret-users > -- Geschenkt: 3 Monate GMX ProMail + 3 Top-Spielfilme auf DVD ++ Jetzt kostenlos testen http://www.gmx.net/de/go/mail ++
