Volume 33 #4

Contents

1. The structure of the human retina: classical and modern data
2. Subjective image and video quality assessment: methodology review
3. Present view of the human peripheral vision specifics
4. Gender differences in perfomance of mental recall of tthe route on a city map. Analysis of the eye movements character
5. Activity of neurons of the nucleus of the solitary tract to stimulation of hypothalic nuclei in norm and after vibration exposure
6. Evaluation of the method of inactivation of the cricket cercal sensilla by means of electrocercogramm

In this paper, we present data of extracellular recording and mathematical analysis of an induced impulse activity of neurons of the nucleus of the solitary tract to high-frequency stimulation of the hypothalamic paraventricular and supraoptic nuclei in rats in norm and under conditions of long-term vibration exposure. It was shown that responses in the form of tetanic potentiation with stable reproducibility in multiple trials dominate in norm. In the group exposed to vibration, a decrease in the number of responsive neurons and a significant increase in the proportion of those exhibiting poststimulus activation were detected. Revealed adaptive redistribution of the balance of excitatory and inhibitory post-stimulus responses may be the result of restructuring of the neurotransmitter systems of the hypothalamic-bulbar projections under conditions of prolonged vibration exposure. Morphological and histochemical results revealed low activity of acid phosphatase and a close interaction of neurons and gliocytes as an integral unit, providing the survival of neurons in conditions of vibration exposure.

Key words: vibration exposure, the nucleus of the solitary tract, single neuronactivity, tetanic stimulation, paraventricular and supraoptic nuclei of the hypothalamus

DOI: 10.1134/S0235009219030090

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