Hi Woogul,
If I'm interpretting the images correctly, the first one
looks like an ANOVA or t-test was done on the beta weights,
including a difference (in both directions) between 2 main
regressors, and the corresponding standard deviation.
If you want to run 3dANOVA2 or 3dANOVA3, see the -help output,
including the examples at the end.
e.g. 3dANOVA3 -help
More detailed information can be found in our class handouts,
under Documentation -> class handouts
1. "Soup to Nuts", single subject through group analysis, at
[
afni.nimh.nih.gov]
2. Group Analysis overview, at
[
afni.nimh.nih.gov]
The 3dANOVA manual can be found under Documentation -> reference
manuals -> ANOVA, at
[
afni.nimh.nih.gov]
----
You second image look like scatter plots, where there is a
single beta weight for each subject, plotted against the
motivation scores.
Each subject's beta weight is probably a mean value of the
ROI (which might be defined by the voxels surviving a threshold).
That can be computed by using 3dcalc to create a mask based on
the threshold of some group analysis t-stat (or other), and then
using 3dmaskave or 3dROIstats to get the mean of a beta weight
volume over the mask.
See "3dmaskave -help" or "3dROIstats -help" for examples of how
to run them (examples are at the top, in those cases).
- rick
