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Dear all, I have a quick and small question for 1st-level model setting. From SPM 8 manual, it tells us that unit of design for the onsets of events or blocks can be specified in scans or seconds. Do I need to use the same unit type for variable event duration setting in the following? In other words, when I want to give a value for a condition for its duration in an event-designed model, what unit should I use, second or scan? Thanks in advance for instruction.