我：How does purkinje cell interact with astrocytes in cerebellum?

：Purkinje cells and astrocytes in the cerebellum interact in many ways. Purkinje cells receive most of their inputs from the parallel fibers of the granular layer, which are mainly generated from the excitatory inputs of the glutamatergic neurons. Astrocytes in the cerebellum modulate the synaptic plasticity between the parallel fibers and the Purkinje cells by releasing gliotransmitters, such as glutamate and ATP, which can modulate the strength of synaptic transmission. Furthermore, astrocytes can also modulate the excitability of Purkinje cells by buffering extra-synaptic glutamate that is released from the granular layer.