I am doing retinotopy analysis using freesurfer 5 with http://surfer.nmr.mgh.harvard.edu/fswiki/FsFastIndividualRetinotopyAnalysis .

I have four runs, two eccen and two polar.  For each run I have 15 seconds fixation, 300 seconds stimuli and 15s fixation at the end (total 330s and 300s for stimuli). 

1) For -retinotopy option in mkanalysis-sess I typed "300". Do you think this setting is fine?

2) After finishing running, I use tksurfer-sess to display the result. When I typed "tksurfer-sess -s SUBJ01 -analysis rtopy.self.lh  -map angle"  with "-c polar" or "-c eccen'" I got two maps with -4.0 to 4.0 color range. I learn from mail list, the two maps do not represent time course of retinotopy, right? So what are these two maps tell us?

3) I tried rtview cmd and the maps look strange. Color scale is from -1.185 to -0.4 and 0.4 to 1.185 and it does not include all the colors in display.

4) I tried to use -run-wise in selxavg3-sess, it fails with: "/analysis/retinotopy/SUBJ01/bold/rtopy.self.lh/pr001/Xtmp.mat

Error using svd 

Could you please give me some idea? Thank you very much in advance.