[United neurons in the cat motor cortex].
Vertically oriented bundles of apical dendrites in the cat motor cortex are described by means of light and electron microscopy. Existence of desmoidal and dendro-dendritic contacts in the bundles is considered as the structural basis of neuronal electrotonic interaction within the limits of one column. Sliding axo-spinal contacts are described between the descending pyramidal axon in layer III and the pyramidal apical dentrite in layer V which, probably, serve for the purpose of regulating activity of the main cortical output elements.
D000818:Animals; D002415:Cats; D003712:Dendrites / Q000648:ultrastructure; D007365:Intercellular Junctions / Q000648:ultrastructure*; D008854:Microscopy, Electron; D009044:Motor Cortex / Q000033:anatomy & histology*
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