Dear Cyril,
I have two models. Could I get the goodness of fit measures using SPM? Or do I have to do this with a statistical software. What are the values that I should in order to do this? Is the contrast estimates calculated by spm enough? Sorry about thesr basic questions but I am always confused about the Y axis when plotting the contrast estimate for parametric modulations using SPM . Values range from 0.04 to 0.06.
Regards,
AS
On 3 Jul 2013, at 12:47 PM, cyril pernet <[log in to unmask]> wrote:
> If you have fitted 2 different models then you could derive a goodness of fit measure - if the data come from the same model this would not work because parametric regressors are serially orthogonalized
>
> cyril
>
>> Dear all,
>>
>> If I have two scans. One with 2 points regressored as parametric modulation and one with 4 points. I want to compare the first order effects of them in terms of the fitting lines. Would it be correct and possible if I take the contrast estimate and T scores and do comparisons between them? If what is the best way of doing this? I got the contrast and T values from ROI's using marsbar.
>>
>> Regards,
>>
>> AS
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