Hi,
you can do this if you model the different events as separate EVs,
though you'll shoot yourself in the foot wrt statistical power, i.e.
estimating the different effect sizes...
cheers
christian
On 23 May 2007, at 16:43, Xiaoyun Liang wrote:
> Hi,
> I wonder if I can obtain the percent signal change with respect
> to each
> stimulus of each condition (not average of each condition) in
> randomized
> event-related fMRI,e.g.,if we have four face category, with ten
> faces each
> category,and I want to calculate the percent signal change with
> respect to
> each face of the same face category instead of face category.
> Thanks a lot!
>
>
>
>
> Xiaoyun
____
Christian F. Beckmann
University Research Lecturer
Oxford University Centre for Functional MRI of the Brain (FMRIB)
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK.
[log in to unmask] http://www.fmrib.ox.ac.uk/~beckmann
tel: +44 1865 222551 fax: +44 1865 222717
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