Thank you, Mark. You answered my question.
Li
On Fri, Nov 13, 2009 at 3:32 AM, Mark Woolrich <[log in to unmask]> wrote:
> Hi Li,
>
> Presumeably you are referring to modelling a group average with extra
> regressors/EVs in the group GLM design matrix that contain additional
> measurements, such as age, handedness etc.? If so then the presence of these
> and the degrees of freedom they use up are automatically accounted for in
> the calculation of both variance of the contrasts and also in the degrees of
> freedom that get used in the resulting t-test.
>
> Cheers, Mark.
> ----
> Dr Mark Woolrich
> EPSRC Advanced Research Fellow University Research Lecturer
>
> Oxford University Centre for Functional MRI of the Brain (FMRIB),
> John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK.
>
> Tel: (+44)1865-222782 Homepage: http://www.fmrib.ox.ac.uk/~woolrich
>
>
>
>
> On 10 Nov 2009, at 15:20, Xiaobo Li wrote:
>
>> Dear Folks,
>>
>> I have a question about FLAME: is it corrected for multiple
>> comparisons when we calculate single group average of the fMRI
>> activations with additional measurements, such as age, handedness,
>> behavioural measures, etc., using FLAME? If so, what method is used
>> for the correction.
>>
>> Thanks
>>
>> Li
>>
>
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