[VoxBo] jlextracts

[Stacy Huffstetler]

So, with 1.8.2, if I detrended and mean scaled my original GLM, am I
changing anything by adding the -d and -n flags?

Stacy

On 6/16/06, Daniel Y Kimberg <kimberg at mail.med.upenn.edu> wrote:
>
> Stacy Huffstetler wrote:
> > Speaking of vbdumpstats, I just attempted to redo some analyses, and
> > I got different numbers the second time around.  The first set of
> > analyses were done with the older version of vbdumpstats ( 1.8.1,
> > when you had to specify a specific contrast, when there wasn't have
> > the option of leaving out -c flag and getting all of the contrasts
> > in the contrasts.txt file).  Is there a difference between
> > vbdumpstats 1.8.2 and 1.8.1 that could account for this?
>
> One difference is that in 1.8.2, it automatically detrends and mean
> scales if those options were selected when you originally ran the GLM.
> Also, both versions of vbdumpstats can be flaky if you don't use a
> contrasts.txt file, or at least use the "foo t vec ..." syntax for the
> contrast.
>
> dan
>



-- 
Stacy Huffstetler
Research Assistant
University of Pennsylvania
Center for Cognitive Neuroscience
Dr. Matthew Botvinick's Lab
Phone:  215-898-2966
http://ccn.upenn.edu/~mmb
shuffste at mail.med.upenn.edu
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