Dear All,
I would like to calculate voxel-wise signal to noise maps and temporal
signal to noise maps (functions in signal to noise over time).
Does anyone knows how to do this (possible using imcalc or a script)?
I searched on the mailinglist archives and found the message below.
Unfortunately, the message that is referred to is no longer available.
All suggestions are welcome.
Thanks a lot!
Maartje
Hi,
If you want a voxelwise mean over a voxelwise standard deviation for a
bunch of images, i.e. you want an SNR image, then use spm_imcalc_ui as
in this post:
http://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind0608&L=SPM&P=R45864 <http://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind0608&L=SPM&P=R45864>
If you want mean over std of the voxels of a single image, then the
attached should do the trick. And if you want something else, please
ask again!
Best,
Ged.
--
Maartje Luijten, MSc
Institute of Psychology
Erasmus University Rotterdam
Woudestein T13-07
PO Box 1738
3000 DR Rotterdam
The Netherlands
Tel: +31 10 408 9729
Mob: +31 647 949 807
Fax: +31 10 408 9009
E-mail: [log in to unmask]
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