Hello Laura,
Can you let me know what version of FSL you are using?
Kind Regards
Matthew
> Dear FSL experts,
>
> I am attempting to run a higher level analysis in FEAT to contrast two tasks performed in separate runs (within-subject analysis). I ran a Fixed Effects model for one subject contrasting the two tasks (design attached). I encountered the following fatal error message:
>
> Higher-level stats
>
>
> cat ../design.lcon | awk '{ print }' > design.lcon
> /usr/share/fsl/5.0/bin/flameo --cope=filtered_func_data --vc=var_filtered_func_data --dvc=tdof_filtered_func_data --mask=mask --ld=stats --dm=design.mat --cs=design.grp --tc=design.con --runmode=fe
> Log directory is: stats
> Setting up:
> ntptsing=2.000000
>
> evs_group=1.000000
> 1.000000
>
> No f contrasts
>
> WARNING: The passed in varcope file, var_filtered_func_data, contains voxels inside the mask with zero (or negative) values. These voxels will be excluded from the analysis.
> nevs=2
> ntpts=2
> ngs=1
> nvoxels=280026
> Running:
> nmaskvoxels=280026
> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
> Saving results
>
> Log directory was: stats
>
> /bin/rm -f stats/zem* stats/zols* stats/mask* ; /bin/mv dof stats
>
> /usr/share/fsl/5.0/bin/smoothest -d 0 -m mask -r stats/res4d > stats/smoothness
> WARNING: Extreme smoothness detected in X - possibly biased global estimate.
> WARNING: Extreme smoothness detected in Y - possibly biased global estimate.
> WARNING: Extreme smoothness detected in Z - possibly biased global estimate.
>
> FATAL ERROR ENCOUNTERED
> WARNING: Extreme smoothness detected in Z - possibly biased global estimate.
> while executing
> "if { [ catch {
>
>
>
> for { set argindex 1 } { $argindex < $argc } { incr argindex 1 } {
> switch -- [ lindex $argv $argindex ] {
>
> -I {
> incr argin..."
> (file "/usr/share/fsl/5.0/bin/feat" line 119)
>
>
> Any ideas about what went wrong?
>
> Laura
> <design.png>
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