Theoretically Sparse, Empirically Dense: New Views on Cerebellar Granule Cells

Cerebellar granule cells are a popular target of neuroanatomical hyperbole, being so small and so numerous. Early theorists proposed unique roles for this vast cell population, ideas that continue to be tested through contemporary approaches. In 2017, a cluster of empirical and theoretical papers offered a fresh and singular look into the functions of granule cells and the computational advantages of their idiosyncratic circuit organization.