WE KNOW A LOT ABOUT THE CEREBELLUM, BUT DO WE KNOW WHAT MOTOR LEARNING IS

In the behavioral literature on human movement, a distinction is made between the learning of parameters and the learning of new movement fo rms or topologies. Whereas the target articles by Thach, Smith, and Ho uk et al. provide evidence for cerebellar involvement in parametrizati on learning and adaptation, the evidence in favor of its involvement i n the generation of new movement patterns is less straightforward. A c ase is made for focusing more attention on the latter issue in the fut ure. This would directly help to bridge the gap between current neurop hysiological approaches to the role of the cerebellum and the behavior al expressions of human motor learning.