Dear Dr Durr,
We like to think of this as a feature rather than a bug.
Models for the analysis of PET data are the same as for
2nd level analyses of fMRI/EEG/MEG.
Its just that for PET you might also like to do
Global normalisation which will rely on a Global
Calculation (for each of these facilities SPM5 says
'this option is only used for PET').
I guess, we have'nt made this clear enough in the
documentation, though. I'll update the manual appropriately.
If you'd like to see some examples of
using SPM5 to analyse PET data, have a look at
chapter 31 of the SPM manual:
http://www.fil.ion.ucl.ac.uk/spm/doc/manual.pdf
Best wishes,
Will.
John Ashburner wrote:
> Dear Dr Dürr,
> I've ccd to the other authors, who may change the documentation.
>
> Best regards,
> -John
>
> On Tuesday 14 March 2006 13:42, you wrote:
>
>>Dear Sirs
>>
>>We wanted to use spm5 for the analysis of PET experiments.
>>However we could not find the PET models on the step
>> Models specification, review and estimation
>> PET
>>which should be (compared to spm2) :
>>% ii) PET models: models suitable for analysis of PET/SPECT experiments
>>% - Single-subject: conditions & covariates
>>% - Single-subject: covariates only
>>%
>>% - Multi-subj: conditions & covariates
>>% - Multi-subj: cond x subj interaction & covariates
>>% - Multi-subj: covariates only
>>% - Multi-group: conditions & covariates
>>% - Multi-group: covariates only
>>%
>>% - Population main effect: 2 cond's, 1 scan/cond (paired t-test)
>>% - Dodgy population main effect: >2 cond's, 1 scan/cond
>>% - Compare-populations: 1 scan/subject (two sample t-test)
>>% - Compare-populations: 1 scan/subject (AnCova)
>>%
>>% - The Full Monty... (asks you everything!)
>>
>>instead we found the same dialog as under the BASIC button.
>>
>>We think this is a bug of the spm5 version.
>>Can you check this?
>>
>>Kind regards Roland Duerr
>>
>>
>>-----------------------------------------------
>>Dr. Roland Dürr
>>Informatikkoordinator
>>Institut für Pharmakologie und Toxikologie
>>Winterthurerstrasse 190
>>8057 Zürich
>>E-Mail: [log in to unmask]
>>Tel.: 044 / 635 59 64
>>Fax: 044 / 635 57 07
>
>
>
>
--
William D. Penny
Wellcome Department of Imaging Neuroscience
University College London
12 Queen Square
London WC1N 3BG
Tel: 020 7833 7475
FAX: 020 7813 1420
Email: [log in to unmask]
URL: http://www.fil.ion.ucl.ac.uk/~wpenny/
|