Hi - the maths answering both of these questions is described in full
detail in our paper on design efficiency - please see:
http://www.fmrib.ox.ac.uk/analysis/fmribindex/#Smith07
Cheers, Steve.
On 18 Jul 2007, at 17:08, William Janes wrote:
> All,
>
> I understand the concept of peak-to-peak heights in the design.mat
> file. The PPheights values in our design.con, however, are
> inconsistent. How is PPheights calculated in design.con?
>
> Similarly, what exactly is RequiredEffect, and how is it cacluated?
> I assume it is the t value that would be necessary to achieve a
> significant effect.
>
> Thank you in advance for any guidance you can provide.
>
> William E. Janes
> Research Assistant
> Head Research Laboratory
> Washington University in St. Louis
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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)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
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