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  • 1
    Electronic Resource
    Electronic Resource
    Analysis of unitary EPSPs mediated by the newly-formed cortico-rubral synapses after lesion of the nucleus interpositus of the cerebellum (1977)
    Springer
    Experimental brain research 30 (1977), S. 233-243 
    Details
    ISSN: 1432-1106
    Keywords: Red Nucleus cells ; IP lesion ; Newly formed synapses ; Unitary EPSPs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00237253
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Properties of the synaptic transmission of the newly formed cortico-rubral synapses after lesion of the nucleus interpositus of the cerebellum (1977)
    Springer
    Experimental brain research 30 (1977), S. 245-258 
    Details
    ISSN: 1432-1106
    Keywords: Red Nucleus cells ; Newly formed synapses ; Facilitation ; PTP
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 1. Properties of synaptic transmission during and after repetitive activation of the newly formed cortico-rubral synapses were examined in the red nucleus neurons (RN) of cats after lesions of the nucleus interpositus of the cerebellum (chronic cats) as well as in normal ones. 2. A prominent facilitation of the amplitude of cortico-rubral unitary EPSPs was observed in both normal and chronic cats when a stimulus to the cerebral peduncle (CP) was preceded by another stimulus by 2–50 msec. 3. Time course of the facilitation shows that it attains maximum at the interval of about 3 msec and decays approximately exponentially lasting for 50 msec or more. 4. When three successive stimuli of identical intensity were applied to CP, the degree of facilitation was more prominent than that for double shock. 5. There was a positive correlation between the time to peak of the cortico-rubral EPSPs and their maximum value of facilitation. 6. The posttetanic potentiation of the cortico-rubral EPSPs was observed after tetanic stimulation to CP in chronic and normal cats. It lasts for a few minutes in both cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00237254
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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