yep - we don't recommend concatenating or averaging them. instead either
put all the data into a higher-level analysis as described in the FEAT
manual or use fixed-effects as descibed in the email list archives.
On Fri, 19 Mar 2004, Brad Goodyear wrote:
> What do people typically do with two repeated datasets if not merge
> Average them, or treat them as separate runs in some sort of multi-run
> On Mar 18, 2004, at 9:06 PM, Jack Grinband wrote:
> > Hi Conny,
> > You can use avwmerge to concatenate across time, but it's generally
> > discouraged.
> > See
> > http://www.jiscmail.ac.uk/cgi-bin/wa.exe?A2=ind0306&L=fsl&P=R6034&I=-1
> > for
> > some of the problems with concatenation.
> > cheers,
> > jack
> > On Thu, 18 Mar 2004 20:04:05 +0100, Conny Schmidt <
> > [log in to unmask]> wrote:
> >> Dear FSL community,
> >> is there an option in FEAT to concatenate fMRI runs to one run and to
> >> perform
> >> analysis over that single run?
> >> Best regards,
> >> Conny
Stephen M. Smith DPhil
Associate Director, FMRIB and Analysis Research Coordinator
Oxford University Centre for Functional MRI of the Brain
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve