Hi Dom, If 2 is the condition then 1 is the index of the reconstruction (D.var). You can have several reconstructions in the same dataset as you might have noticed. The other number doesn't mean anything but it's a tag specific to the parameters of the contrast. So if you change the parameters (such as frequencies or time window) you'll get a different number and the images will not overwrite each other. (For people on the list, you will see this in the next public update). Vladimir On 18 May 2010, at 14:29, Dominik Bach wrote: > Hi Vladimir > > SPM source reconstruction gives me output images, such as > > sw_wdfmcaejMspm8_ja170488_BACH_20081016_2_116_1 > > what do the sufixes refer to? 2 is the condition I inverted, but the > 116_1? I do other frequencies, and they come up with numbers such as > 117, 136, 196 and ohters. > > Many thanks > Dom