Hi,
This is my first time running an SPM analysis, so I would really appreciate if anyone is willing to offer some step-by-step guidance.
I'm doing a first-level fMRI analysis. I have 10 trials each of 62 TR, with 7 TR rest in between.
I've defined a single condition, with 10 onsets. I've also defined one PM, where I inputted my behavioural data (the idea is that activation would reflect behaviour).
Now I've created the fMRI model specification, I've gone through the Estimate step, here I choose a "Classical" model. Now, I click on the "Results" button, and I am prompted to choose my SPM.mat.
Then, I am taken to the SPM contrast manager, where I have to define a new contrast. I understand that a contrast is defined by putting 1's and 0's - one number of each individual regressor you have. However, I didnt actually input any 'Regressors'. I only input one 'Parametric Modulator'.
Does anyone have any suggestions of how to define a contrast in my case?
Thanks,
Joelle
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