Hi Christian,
Thank you very much! I want to correlate the ten psc wrt ten faces
(different though in same face category) with the ratings of ten faces, so
I try to use this method. Does it make any sense?
Many thanks!
Xiaoyun
On Wed, 23 May 2007 16:47:07 +0100, Christian Beckmann
<[log in to unmask]> wrote:
>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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