[Functional organization of monosynaptic interneuronal connections in the cerebral cortex].

A study of monosynaptic intraneuronal connections was performed in micro-regions of sensorimotor and autitory cortical areas in cats. Certain definite characteristics were found in the joint activity of neurones which persisted after the regime of microsystem activity was changed. Neurones with a lower spike amplitude discharge earlier and elicite discharges in neurones with a greater spike amplitude; feed-backs are inhibitory. It is suggested that in both cortical areas there exist microsystems with similar organization composed of different types of neurones.