Dear SPM experts,
I'm writing to you to request some information about how the degrees of freedom in the first level are computed in SPM. I read elsewhere that they can be calculated as the number of observations minus the number of conditions. However, when I do that I don't get the number of degrees of freedom that SPM gives me in the first level.
We are several PhD students in the lab cracking our brains to find an answer but so far we cannot figure out how the actual calculation is made in SPM.
Could you possible give us a hand, please?
Thank you in advance for your assistance,
Noelia
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