Yes; they have a permutation-based toolbox which can be used instead
of parametric statistics, in the same way that "randomise" in FSL is
a permutation-based alternative to parametric statistics. In SPM it
is called SnPM and is a very similar implementation (mathematically)
to randomise.
On 28 May 2007, at 14:32, Marc Dubin wrote:
> Okay, but does SPM implement bootstrap statistics?
>
> On 5/28/07, Steve Smith <[log in to unmask]> wrote: No. The
> parametric statistics of relevance here are generic and
> suffer from the same limitations and dangers, regardless of the
> implementation.
> Steve.
>
>
>
> On 28 May 2007, at 14:21, Marc Dubin wrote:
>
> > Is this a fundamental difference between FSL and SPM?
> >
> > On 5/28/07, Steve Smith < [log in to unmask]> wrote: Hi - please
> > see the original paper on TBSS.
> > Although the data is most likely Gaussian distributed, correcting
> for
> > multiple comparison corrections across voxels would be difficult to
> > get right with parametric statistics.
> > Cheers.
> >
> >
> > On 27 May 2007, at 23:04, Marc Dubin wrote:
> >
> > > Does anyone know if it is possible to use parametric stats
> > > in TBSS as well as the bootstrap stats in "randomise"?
> > >
> > > Best,
> > > Marc
> >
> >
> >
> ----------------------------------------------------------------------
> > --
> > ---
> > 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
> >
> ----------------------------------------------------------------------
> > --
> > ---
> >
> >
> >
> > --
> > 646 831 8886
> > [log in to unmask]
>
>
> ----------------------------------------------------------------------
> --
>
> ---
> 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
> ----------------------------------------------------------------------
> --
> ---
>
>
>
> --
> 646 831 8886
> [log in to unmask]
------------------------------------------------------------------------
---
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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