Hi Freesurfer experts,

I'm trying to analyze some phase-encoded data with the eccentricity protocol for retinotopic data and I'm having troubles with selxavg3-sess.

I run the following commands:

mkanalysis-sess -analysis OrderDisorder.idsubj.lh -surface idsubj lh -TR 2 -retinotopy 24 -paradigm rtopy.par -fwhm 0 -per-run -nskip 5 -fsd bold

selxavg3-sess -a OrderDisorder.idsubj.lh -s idsubj_OrderDisorder_continous

and I got this error message:

Found 122573/130829 (93.7) voxels in mask Creating Design Matrix ... creation time = 0.019 sec DoMCFit = 1 ntptot = 875, nX = 80, DOF = 795 Saving X matrix to /usr/local/freesurfer/fsfast/OrderDisorder_new/MK_OrderDisorder_continous/bold/OrderDisorder.MishaK.lh/Xtmp.mat Error using svd Input to SVD must not contain NaN or Inf.

Error in cond (line 35) s = svd(A);

Error in fast_selxavg3 (line 279) XCond = cond(XtX);

I attached the Xtmp.mat file from the output folder in case is needed.

Thank you! Best Francesca