It provides lateral inhibition to Purkinje cells . Basket cells inhibit Purkinje cells lateral to the active beam. Golgi Cells receive input from pf , mf , and cf . They inhibit granule cells . Golgi cells provide feedback inhibition to granule cells as well as feedforward inhibition to granule cells .
Golgi cells create a brief burst of granule cell activity.
A simple model showing how weakening an excitatory synapse onto an inhibitory cell can facilitate an excitatory pathway. The deep nucleus fires when it receives excitatory input. However, when the Purkinje cell also receives excitatory input over all its parallel fibers simultaneously, it will subsequently inhibit the deep nucleus which cannot fire anymore. Weakened synapses from the pf to the inhibitory cell no longer fire cell, and the excitatory pathway remains active. Thus, weakening an inhibitory input onto an excitatory circuit facilitates the excitatory pathway.