Hi Rick,
Thanks for your response.
1. Yes, we are using amplitude modulation. It did say later that 3dDeconvolve closed due to a fatal error. I didn't see anything other than what I sent that was a red flag. I'll try running again and looking for a different error.
2. Your answer here makes sense due to the order of magnitude problem. What is weird is that we've processed several other participants collected the same way without any problems. How do I go about 'fixing' these datasets if this is the problem?
Much thanks!
Wendy