Hi, that sounds fine I think.
Cheers.
On 15 Jul 2009, at 10:46, Yoona Kang wrote:
> Thanks Steve,
>
> indeed higher level FEAT showed a different result. We first looked at
> activation within each of two conditions A and B, adding up data
> from 16
> individuals. in condition A there was activation higher than
> baseline in our
> ROI, but such activation was not present in condition B. However, when
> condition A and B were contrasted, no significant difference between
> two
> conditions was revealed.
> Because we had an a priori region of interest we wanted to see the
> difference within that specific region. So, we extracted one active
> cluster
> that matched our a priori ROI from the earlier FEAT contrast of
> condition A
> to create a mask using fslroi. Then voila, there was a difference as
> stated
> in the earlier message. Would this be a legitimate and sound way of
> looking
> at data?
> Thank you very much.
>
> Sincerely,
> Yoona
>
>
>
>
>
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Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
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