¥ Step 2: run 3dREMLfit ; perhaps adding
options to the command line:
H -addbase : add extra baseline columns to the regression matrix
H -slibase : add extra baseline columns to the regression matrix, on a per slice basis = intended to aid in
removal of physiological noise
H -gltsym : add extra GLTs (beyond those from 3dDeconvolve)
H -usetemp : -slibase can require a lot of
memory
o Generates REML matrices for many (a,b) cases for each
slice
o This option writes & reads temporary
matrices to disk to reduce RAM usage
å -verb :
outputs information
about memory usage as program runs
H -Obuck : output OLSQ bucket dataset (etc.)
o -Rbuck : output GLSQ bucket
(stimulus bs and statistics)
o -Rbeta : output GLSQ (all the bs and only the bs; no statistics)
o -Rfitts : output GLSQ fitted model
o -Rvar : output GLSQ (a,b) parameters and variance estimate (per voxel)
H -NEGcor : allow negative correlations in the estimation
oProbably not really
needed for FMRI, but option is there just in case
oThere are more options
to control estimation of the (a,b) parameters
¥ Of course:
read the output of 3dREMLfit -help