Hello, in SPM does high-pass filtering have any 'influence' on the implicit baseline/constant term?
I have 3min blocks that contain a randomised presentation of 4 types of events and a jittered ISI. These blocks are separated by 20s baseline blocks. In the design matrix the 4 event types are modelled separately as impulse responses, i.e., not as blocks. The timing of the event types is above the default 128Hz high-pass filter and should pass the filter. However, what happens to the baseline blocks, which are not explicitly modelled in the design matrix?
Cheers,
Scott
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