Yes, that approach would be ok - using the command line calls for fixed
effects analyses in previous email list mailings.
Note though that if the point is to end up combining these anlayses across
various subjects in a mixed effects analysis then you probably don't need
to combine the data at this point - you can probably just put it into one
larger design when you have all subjects' data.
On Mon, 2 Aug 2004, SUBSCRIBE FSL Zhang, X wrote:
> Dear FSL:
> my condition 1 and condition 2 are done in different runs
> I want to do a fixed analysis to contrast them.
> what should I do?
> can I multiply COPE2 by -1 (call it COPE2NEG) and then
> do a standard fix effect analysis i.e. averaging COPE1 and COPE2NEG?
> Thank you for your help.
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