The effect of visual deprivation on cortical neurons: a Golgi study.

摘要: The effects of visual deprivation on the structure cortex during first 30 days life were studied in twenty-five young rabbits and compared with an equal number reared under normal conditions. Rapid Golgi Golgi-Cox techniques used to examine results total cortical neurons, relative proportion various cell types, length branching patterns dendrites pyramids stellate cells, appearance density spines along pyramids. Results study indicated no difference neuronal numbers or frequency types significant variation pyramidal dendrite systems. Stellate neurons throughout particularly layer IV showed a greater range dendritic among experimental animals than controls. It was suggested that this might reflect importance specific afferent stimulation postnatal period as controlling factor, working jointly genetic restraints determining value ranges for neural parameters such length. In case our animals, one these two elements would presumably have been withdrawn, leading wider values. Deformity central three-fifths apical shafts appeared constitute major structural change resulting directly from loss stimuli. Although apparently not reduced, definable changes noticed oil immersion optics. most be variability of, terminal enlargement which characteristically caps spines. spine morphology representing response complete lack underline sensitivity immature external milieu.