Hello,
I apologize for the second post but I have a question regarding the use of slice timing correction. My current protocol uses a event-related design with a variable ISI (random between 5000-7000ms, TR=2000ms). I'm wondering if slice timing is unnecessary when using a variable ISI. My understanding of slice timing correction is to adjust each slice as if it were acquired at the same time relative to the stimulus, rather than some slices consistently lagging. However, in a variable ISI the timing of acquisition for any given slice is likely to be distributed rather evenly around stimulus onset, correct? Therefore, would you still need to adjust for the timing of slice acquisition as it relates to the stimulus onset?
Any clarificiation or correction would be greatly appreciated.
Thanks much,
Eric Vidoni
University of Kansas
Alzheimer and Memory Program
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