See Smith and Nichols, NeuroImage 2009 for TFCE
Cheers
--------------------
Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR Hospital, Headington,
Oxford. OX3 9 DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask]
http://www.fmrib.ox.ac.uk/~steve
----------------------
On 8 Oct 2009, at 18:50, "Rajagopalan, Venkateswaran"
<[log in to unmask]> wrote:
> Hi Gwenaelle,
>
> Thanks
>
> I was more talking about the n of B, C and E compared with D.
> My B group has bigger sample size when compared to all other groups.
> Control (n=9), B(n=25), C (n=13), E (n=14) & D (n=20).
>
> Thanks i will look at the documentation pages. I tried to find more
> information on TFCE but TFCE research page don' have any article
> listings, where can i find more info on TFCE.
>
> Thanks
>
> venkateswaran
>
>
> ________________________________
>
> From: FSL - FMRIB's Software Library on behalf of Gwenaƫlle DOUAUD
> Sent: Thu 10/8/2009 1:12 PM
> To: [log in to unmask]
> Subject: Re: [FSL] Re : [FSL] Contrast matrix for one way ANOVA-VBM
>
>
>
> Hi,
>
>> You are right that my sample size for control is less than
>> the sample size for D and other groups.
>
> I was more talking about the n of B, C and E compared with D.
>
>> I looked at the uncorrected p values i could see some
>> significant differences between control and other patient
>> groups,
>
> If they are uncorrected, they are *not* significant. But they might
> indicate that it would be if you use a more sensitive way of
> correcting for multiple comparisons...
>
>> i also looked unthresholded corrected p-values
>> (_tstat file extension am i correct)
>
> Hmmm, no. Please have a look at the randomise manual (www.fmrib.ox.ac.uk/fsl/randomise
> ). Corrected p-vals are *_corrp_*, uncorrected p-vals are *_p_*.
>
>> I would like
>> to try FDR and TFCE correction can you please tell me how
>> can i run these stats on this data.
>
> Again, please have a look at the end of the FSL-VBM manual, the
> randomise manual and the fdr manual (www.fmrib.ox.ac.uk/fsl/
> randomise).
>
> Cheers,
> Gwenaelle
>
>
>
>
>
>
>
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