I have done the changes did you suggested:

mkanalysis-sess -analysis fc.rhipposeed.mni305 -mni305 -fwhm 6 -notask -taskreg R_Hippocampus.dat 1 -nuisreg vcsf.dat 5 -nuisreg wm.dat 5 -polyfit 5 -nskip 4 -mcextreg -fsd rest -TR 3 -per-run -hpf 0.01 -lpf 0.1 -force

but the error persists:

GLS Beta Pass 

  run 1    t= 0.0

Temporally filtering

GLS Residual Pass 

  run 1    t= 0.0

Temporally filtering

Error using chol

Matrix must be positive definite.

Error in fast_selxavg3b (line 947)

Wseg = inv(chol(toeplitz(acfrun))');

>> ------------------------------------------

IMPORTANT

Please take in account that before to update the MacOs system to version 11, the command run on the same data independently, if I choose -hpf 0.01 -lpf 0.1 or viceversa.

Il 5 gennaio 2018 alle 17.17 Douglas Greve <greve@nmr.mgh.harvard.edu> ha scritto:

You need to swap the values of the hpf and lpf. The way you have it,  you are essentially filtering out everything above .01 Hz, which probably leaves almost no signal

On 1/3/18 3:00 PM, stdp82@virgilio.it wrote:

mkanalysis-sess -analysis fc.lhamgseed.surf.lh -surface fsaverage lh -fwhm 6 -notask -taskreg L_Amygdala.dat 1 -nuisreg vcsf.dat 5 -nuisreg wm.dat 5 -polyfit 5 -nskip 4 -mcextreg -fsd rest -TR 3 -per-run -hpf 0.1 -lpf 0.01

Thanks

Il 31 dicembre 2017 alle 22.34 Douglas Greve <greve@nmr.mgh.harvard.edu> ha scritto:

What is your mkanalysis-sess command line?

On 12/28/17 8:53 AM, stdp82@virgilio.it wrote:

Running the "selxavg3-sess -s" command line in FS-FAST for seed-based functional connectivity analysis

the following errors occurred:

--------------------------

Temporally filtering

Error using chol

Matrix must be positive definite.

Error in fast_selxavg3b (line 947)

Wseg = inv(chol(toeplitz(acfrun))');

--------------------------

Thanks

Stefano

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