thanks, Mark.
Beta_hat_0 is the same as the mean (assuming no pre-whitening), but I
don't think the variance estimate of Beta_hat_0 the same as the
variance of the signal. oh, well...
-Luis
On Jun 23, 2009, at 10:59 AM, Mark Jenkinson wrote:
> Hi,
>
> If you are talking about the mean signal as the baseline regressor
> then
> I'm afraid the answer is no. We do not remove the mean signal via a
> regressor, but instead remove it from the signal and the model in the
> pre-statistical filtering. Hence we do not generate values or
> variances
> for it. But it is easy to calculate the mean using fslmaths and -
> Tmean
> on the original data if that is all you want.
>
> All the best,
> Mark
>
>
> On 23 Jun 2009, at 15:49, Luis Hernandez wrote:
>
>> Dear FSL experts,
>>
>> Is there a way to get FSL to dump the parameter estimate for the
>> baseline regressor into a file, like pe0? (It looks like the
>> mean_func file might do the trick ... is this right?) BUT more
>> importantly, how about its variance estimate? can that be dumped
>> out? FEAT writes out varcope files based on the specified
>> contrasts but I don't see how to make a contrast that uses the
>> baseline regressor, since it is kind of "hidden" ?
>>
>> I apologize if I missed something obvious. thanks in advance
>>
>> -Luis
>>
>> --
>> ( http://www.eecs.umich.edu/~hernan )
>>
>
>
--
( http://www.eecs.umich.edu/~hernan )
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