Hi! <br>I am processing a resting state data set, which I would like to low pass filter to get rid of some artifacts. The sample will be very small, so I won&#39;t run a RFX GLM, but an FFX GLM and/or single subject analyses. <br>
Since the low pass filter introduces high autocorrelations, it does not make sense to whiten the data before the GLM. <br>However, in order not to violate the assumptions of the OLS, I would like to use the precoloring approach described in Worsley &amp; Friston 1995. Is that by any chance implemented in FSFAST, and if not, where would be the right place to add it?<br>
Thanks in advance, <br>Caspar<br>