Hello,
I am trying to use SPM to analyse NIRS data.
(the data are collected at 24 electrodes).
For the moment, I am not interested in the spatial aspects:
I just want a quick way to compute the fits between a model
and the data (I am only interested in the voxel-based uncorrected p).
I have managed to export the NIRS data in a series of img files that I
have set up with the dimensions 2x5x5.
When I try to estimate the model, the smoothness estimation crashes, which
is not very surprising.
I envisage two solutions:
1. to modify spm_spm.m to bypass the smoothness estimation, but this may
open a can of worms (?)
2. to create larger img files so that the smoothness estimation has enough
"space" to proceed.
I would rather start with solution 2, but rather than proceeding by trial
and errors, I am wondering if someone here could tell me what are the
minimal requirements for the smoothness estimation to work (or propose
another solution)
Cheers,
Christophe Pallier
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