Dear SPM users,
I am trying to run a PPI analysis using the gPPI toolbox. I can build a design matrix, but the script fails at estimation. When I try to manually estimate the SPM.mat via the SPM gui, it seems to work. I suppose something is going wrong in "spm_estimate_ppi.m" but I cannot figure out where and why.
Below the parameter file (P) and the failure message I am getting.
Any help would be appreciated,
Sincerely Froukje de Vries
-----------------------------------------------------------------------------------------
P =
subject: '31_101'
directory: 'F:\fMRI\analyses\1stlevel\map_10\31_101'
VOI: 'F:\fMRI\analyses\PPI\ROI_building\6mm_ROIs\6mm_R_DLPFC_39_38_28_masked.nii'
Region: 'gPPI_test'
Estimate: 1
contrast: 5
extract: 'eig'
Tasks: {'1' 'N0' 'N1' 'N2' 'N3'} % the same thing happens when it is set to '0' 'N0' etc %
Weights: []
maskdir: []
equalroi: 1
FLmask: 0
VOI2: {}
analysis: 'psy'
method: 'cond'
CompContrasts: 1
Weighted: 0
Contrasts: [1x1 struct]
estimate_PPI.m
SPM8: spm_spm_WB (v4515) 11:14:42 - 21/08/2013
========================================================================
IPlanes 1-46 /46 : ...done
Temporal non-sphericity (over voxels) : ...ReML estimation
ReML Block 1
ReML Iteration 1 : ...4.075825e+001 [+4.25]
ReML Iteration 2 : ...1.349581e-001 [+4.50]
ReML Iteration 3 : ...2.315530e-003 [+4.75]
Estimation Failed
Warning: Missing conditions!!! Invalid Contrast
Invalid Contrast
PPI Contrasts were not estimated for some reason.
ans =
xY: [1x1 struct]
xBF: [1x1 struct]
nscan: 336
Sess: [1x1 struct]
xGX: [1x1 struct]
xX: [1x1 struct]
xVi: [1x1 struct]
SPMid: 'SPM8: spm_spm (v3960)'
xM: [1x1 struct]
xsDes: [1x1 struct]
swd: 'F:\fMRI\analyses\1stlevel\map_10\31_101'
xVol: [1x1 struct]
Vbeta: [1x5 struct]
VResMS: [1x1 struct]
VM: [1x1 struct]
xCon: [1x19 struct]
Froukje de Vries, MD
PhD student
Department of Psychiatry
VU university, Medical Faculty, Room C461
Van der Boechorststraat 7
1007 MB, Netherlands
phone: 020-4449635
email: [log in to unmask]
monday-thursday
