Hello FSL Team, could you please tell me where I can find some information on the exact formulas with which the different basisfunctions are implemented in FSL? I especially need to know what exactly changing column 2 of '3 column logfiles' does to the shape of the HRF. I gather it changes width and height, but how much? Is this information perhaps found in some tech report? Greetings, Nils -- Sensationsangebot verlängert: GMX FreeDSL - Telefonanschluss + DSL für nur 16,37 Euro/mtl.!* http://dsl.gmx.de/?ac=OM.AD.PD003K1308T4569a