Hi Tiffany,

Looking in the DCM you sent for session 2, there’s something unusual about the data which is causing it to fail. DCM.Y.y contains three fMRI timeseries of length 295. However, DCM.Y.X0 (your ‘nullspace’ or nuisance regressors),  and your ROIs for each region in DCM.xY, are of length 190.

Did you create this DCM with a script, or with the GUI?

Best,

Peter.

From: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]] On Behalf Of Tiffany Huang
Sent: 03 October 2014 01:28
To: [log in to unmask]
Subject: [SPM] DCM error message

Dear SPM experts,

I was running DCM on  my subjects and this error message occurred to one subject.

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

Error using inlineeval (line 14)

Error in inline expression ==> spm_int(P,M,U)

 Index exceeds matrix dimensions.

Error in inline/feval (line 33)

        INLINE_OUT_ = inlineeval(INLINE_INPUTS_,

        INLINE_OBJ_.inputExpr, INLINE_OBJ_.expr);

Error in spm_diff (line 80)

    f0    = feval(f,x{:});

Error in spm_nlsi_GN (line 283)

    [dfdp f] = spm_diff(IS,Ep,M,U,1,{V});

Error in spm_dcm_estimate (line 184)

    [Ep,Cp,Eh,F] = spm_nlsi_GN(M,U,Y);

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

Does anyone know how to fix it? Thank you in advance.

Tiffany