Hi - as far as a I know (someone correct me if I'm wrong), the
Gaussian random field theory stuff for clusters is already assuming a
directional test so there's no further adjustment to make.
Cheers, Steve.
On 18 May 2006, at 00:16, Soohyun Cho wrote:
> Hi,
>
> I have a question about adjusting the cluster threshold for
> directional
> tests.
>
> If I want to have an alpha level of 0.05, but want to test for
> directional effects, should I change the cluster p threshold without
> changing the size of our cluster threshold?
>
> Thank you for your timely help,
> Soohyun
------------------------------------------------------------------------
---
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)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
------------------------------------------------------------------------
---
|