Hi Vina,
I am not sure what you mean by "individual data points (betas)". Are
you referring to the betas (parameter estimates - PEs) corresponding
to the age covariate from fitting the group-level GLM? If so - then
simply setup a contrast in the group-level analysis to extract the
corresponding PE.
Cheers, Mark.
----
Dr Mark Woolrich
EPSRC Advanced Research Fellow University Research Lecturer
Oxford University Centre for Functional MRI of the Brain (FMRIB),
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK.
Tel: (+44)1865-222782 Homepage: http://www.fmrib.ox.ac.uk/~woolrich
On 15 Apr 2009, at 18:58, Vina Goghari wrote:
> Hi group,
> I have three groups that I am comparing for my fMRI analyses.
> Because there are some differences between groups in age etc. I
> covaried for those measures at the group data. I was wondering
> whether there is a way to extract individual data points (betas)
> from that covaried data? I have only been able to apply the group
> mask to the individual level data, which was not covaried for.
>
> Thanks,
> Vina
>
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