Figure 8. Schematic diagrams showing mechanisms of cerebellar learning suggested by our data.
Each panel shows the spiking activity of the elements in the proposed cerebellar circuit during the course of a learning experiment. Trial ‘3’ contains two schematics illustrating the effect of spontaneous trial-to-trial variation in the simple-spike firing rate, superimposed on the effects of trial-over-trial depression and longer-term learning. Abbreviations are: PC, Purkinje cell; GrC, granule cell; DCN, deep cerebellar nucleus; IO, inferior olive; CS, complex-spike.