rious neuroimaging tech- niques, including PET (Gold et al., 1996; Shadmehr and Holcomb, 1997), fMRI (Henson et al., 2000), and high- frequency EEG (Kamiya et al., 2002). It has been argued that the "novelty-routinization" functional hemispheric asymme- try is fundamental and irreducible to the more commonly