Dear SPM experts,
I have an awkward question that troubled me, and I couldn't find the cause of this problem.
I have rapid event-related fMRI data. In the 1st level analysis, I built a GLM model and specified each cue as a separate condition. In contrast manager, I inputted the contrasts as "one" for the condition regressor and "zero" for other regressors (i.e., other cues and 6 rigid parameters).
Then, when I extracted the beta values for each condition, I saw that the last two cues were presented at the end of the fMRI task have very big value as compared to the rest values (e.g., before last =48.74, last=-39946.57).
I am looking forward to your kind suggestions.
Sincerely,
Wang
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