Thanks this works great! I do have another question. In regards to setting up FEAT and slice timimg correction. We aquired the scans on a Siemens Avanto with interleaved. Our model is a basic block design with a TR = 2, 16s off, 16s on. I ran FEAT with interleaved selected and ran my activation results in fslstats. Then I ran FEAT with no slice timing correction and got similiar, but slightly different results when running fslstats. My question is should I run interleaved if that is how the scanner aquired the data? And how do I know that the results for my activation are correct when using interleaved?