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Analysis of unitary EPSPs mediated by the newly-formed cortico-rubral synapses after lesion of the nucleus interpositus of the cerebellum.

作者信息

Murakami F, Tsukahara N, Fujito Y

出版信息

Exp Brain Res. 1977 Nov 24;30(2-3):233-43. doi: 10.1007/BF00237253.

DOI:10.1007/BF00237253
PMID:598428
Abstract
  1. Unitary EPSPs were recorded intracellularly from neurons of the red nucleus (RN) by stimulating the cortico-rubral fibers in normal cats as well as those with chronic lesion of interpositus nucleus (IP) of the cerebellum. 2. Two groups of unitary EPSPs were recorded in cats with IP lesion. One consisted of cortico-rubral unitary EPSPs with a shorter time to peak and larger amplitude than those in normal cats. The other consisted of unitary EPSPs of the normal range. 3. The appearance of the fast rising group of cortico-rubral EPSPs caused by IP lesions was theoretically predictable based on Rall's compartmental model by assuming that new synapses were formed close to the soma of the RN cells. 4. The amplitude of the fast rising EPSPs increased more prominently by hyperpolarizing the membrane potential than that of the slowly rising ones. 5. It was concluded that the fast rising group of unitary EPSPs which appeared following IP lesion was due to the formation of new synapses on the proximal portion of the soma-dendritic membrane of RN cell.
摘要

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引用本文的文献

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Properties of the synaptic transmission of the newly formed cortico-rubral synapses after lesion of the nucleus interpositus of the cerebellum.
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Physiological properties of the newly formed cortico-rubral synapses of red nucleus neurons due to collateral sprouting.
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