Hi Cedric,
I am a bit slow in replying... I have never played with the automatic
contrast generation for fMRI factorial design (which is probably what you
mean). If you could attach the saved batch as .xml file I can have a look
into it.
Volkmar
On Mon, 8 Jan 2007, Cédric Lemogne wrote:
> Hi Ged,
> Yes, I can create the appropriate contrasts in the contrast manager adding few zeros.
> I was just wondering if it would be possible to get the appropriate pre-defined contrasts to save some time !
> I hope Volkmar will respond to me if this a really a bug !
> Thank you very much for your response.
> Sincerely yours,
> Cédric
>
>
>
>
>
>> Message du 08/01/07 11:58
>> De : "Ged Ridgway"
>> A : "Cédric Lemogne"
>> Copie à :
>> Objet : Re: [SPM] problem covarying out the realignement parameters
>>
>>
>> Hi Cédric,
>>
>> It doesn't sound to me like you're doing anything wrong, it might well
>> be a bug... hopefully someone like Volkmar will reply if so.
>>
>> In the mean time, can you simply create new contrasts yourself in the
>> contrast manager and use these instead of the pre-defined ones? It's
>> probably just necessary to create ones with the same pattern of
>> non-zero values but some extra zeros to pad to the correct length.
>>
>> Hope that helps, and that you get a more conclusive answer,
>> Ged.
>>
>>
>> Cédric Lemogne wrote:
>>>
>>> Dear all,
>>>
>>> I have a problem when using the "multiple conditions" option and the
>>> "multiple regressors" option together to set a factorial design.
>>>
>>> Actually I would like to use the "multiple regressors" option to model
>>> the realignment parameters as confounds
>>>
>>> When I use these 2 options for a single session, it works well and the
>>> required contrasts are created.
>>>
>>> However, when I try to do the same for more than a single session, the
>>> contrats are created without taking these regressors into account.
>>>
>>> In other words, the contrast vectors length is shorter than the total
>>> number of regressors.
>>>
>>> What I am doing wrong ?
>>>
>>> Any help would be much appreciated !
>>>
>>> Cédric
>>>
>>
>>
--
Volkmar Glauche
-
Department of Neurology [log in to unmask]
Universitaetsklinikum Freiburg Phone 49(0)761-270-5331
Breisacher Str. 64 Fax 49(0)761-270-5416
79106 Freiburg http://fbi.uniklinik-freiburg.de/
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