Dear SPM5 users
I have been trying to do the 3D source reconstruction on the mae_eeg
dataset from the SPM homepage. I have some problems with building the
model. It seems that I have succeeded the MRI normalization step, since
the file amri_vbm_inv_sn_1.mat is generated.
The problem arises when I’m asked to ”Select inner-skull bin mask”. Here I
should choose amri_iskull.img, right?
I have tried just to close the window and the next thing I’m asked for, is
to ”Select scalp bin mask”. Is it the amri_oscalp.img I should choose here?
The main problem is that I can’t find the amri_iskull.img and
amri_oscalp.img on my computer. Do someone know what I’m doing wrong?
I really hope that someone can help me :-)
Thanks,
Carsten
PS. This is what I have done step by step
- Added the path to SPM5 and all its subdirectories.
- Created fid_eeg.mat, fid_mri.mat, sensors_orig.mat, and
headshape_orig.mat with the script create_fid_files.m. (I have deleted the
first 6 lines in sensors.pol and the first 3 lines in headshape.pol since
these coordinates corresponded to the fiducials in the create_fid_files.m.
Is it wrong to do this?)
- 3D source reconstruction: Loaded the mae_eeg.mat with the user interface
and pushed the button “Meshes”.
- Selected “amri.img,1”. The “amri_vbm_inv_sn_1.mat”, “amri_vbm_sn_1.mat“,
c1amri.img”, “c2amri.img”, “c3amri.img”, and “mamri.img” was generated.
- And then I was asked “Select inner-skull bin mask”
Before I was asked to select the inner-skull bin mask the following was
printed in Command Window:
ans =
sMRI: [1x73 char]
nobias: [1x72 char]
def: [1x80 char]
invdef: [1x84 char]
msk_iskull: ''
msk_scalp: ''
msk_flags: ''
tess_ctx: ''
Ctx_Nv: ''
Ctx_Nf: ''
tess_iskull: ''
Iskull_Nv: ''
Iskull_Nf: ''
tess_scalp: ''
Scalp_Nv: ''
Scalp_Nf: ''
CtxGeoDist: ''
InterpMat: ''
Msize: 1
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