| Abstract: | In acute experiments on nembutal-anesthetized (40 mg/kg, i.p.) albino rats, we recorded extracellularly and analyzed the background
impulse activity (BIA) of neurons of the fastigial nucleus of the cerebellum. Experiments were carried out on intact and labyrinthectomized
rats in the norm and after long-lasting (up to 15 days) influence of general vertical vibration (60 Hz, 0.4 mm, 2-h-long everyday
sessions). Distributions of the neurons according to the level of regularity of BIA, dynamics of spike trains, pattern of
histograms of interspike intervals (ISIs), and different frequency ranges of BIA were plotted; the mean frequency of this
activity and the coefficient of variation of ISIs were also calculated. Possible mechanisms of the effects of long-lasting
vibration of different durations on the BIA generated by neurons of the fastigial cerebellar nucleus in intact animals and
after switching off of labyrinth afferent inputs are discussed.
Neirofiziologiya/Neurophysiology, Vol. 38, No. 1, pp. 32–39, January–February, 2006. |
