Quantitative electron microscope study of synaptic terminals to basket neurons in cerebellar cortex of rat

Quantitative electron microscope study of synaptic input to 40 cerebellar basket neurons in the rat has revealed, that while the dendrite tree (1580 mum in average) receives almost exclusively excitatory parallel fibres (2420/dendritic tree of single basket cell), the perikaryonal surface receives in addition to parallel axons a well developed (26% of all axosomatic boutons) inhibitory input. The few climbing fibres contacting BC somata, were not observed to establish true synaptic articulations.