[Interaction of the cerebellar cortical neurons in the cat: a cross-correlation analysis]

Interactions between neurons in the cortex of cat cerebellum were investigated by the crosscorrelation analysis in acute experiments. Excitatory connections of various effectiveness were revealed in 13 of 90 pairs of simultaneously recorded neurons (14%). Very high percentage of inhibitory connections was found. They were observed in 38 pairs (42%). Neurons in 36 pairs (40%) had common inputs. Changes in duration and effectiveness of the interneuronal connections under different conditions of stimulation were found. Facts observed are discussed in connection with the already known data concerning functional organization of the cerebellar cortex. Possible causes of such a great number of revealed inhibitory interactions are discussed.