Hi Stephen, Am Mittwoch, 3. Januar 2018, 16:02:06 CET schrieb Stephen Smith: > > On 3 Jan 2018, at 14:44, Tobias Bachmann > > <[email protected]> wrote: > > when using the HCP's ICA+FIX data (NIfTI volume files) for a rather simple > > group ICA, would you recommend further conventional preprocessing, i.e. > > > > 1. smoothing (about which conflicting info is to be found) > > spatial or temporal?
Spatial. > The simple answer is in general no, although for the purposes of group-ICA > only (and not any later subject-specific analyses like dual regression), it > might be the case that some lowpass temporal filtering could boost > effective CNR. I'm indeed planning on using dual regression later on. > > 2. discarding the first few volumes (I found hardly anything regarding > > this > > issue)? > > For most purposes it's not necessary, though there are some slight residual > starting effects in the data, so you could delete a few. Okay, thanks a lot! Tobias _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
