I N Ianvareva

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During formation of human long-term adaptation to cold-hypoxic influence, the some dynamics of psychological mechanisms contribution was revealed. On the first step of adaptation process, emotional-volitional personal peculiarities are significantly contributing; on further steps, communicability and general learning abilities are gaining importance.(More)
The responses of cortical neurons to multiple short-term hypoxic influences were studied in immobilised cats. ARs were recorded. To produce hypoxia, artificial respiration was switched off for a period of 3-5 min every 60-90 min. Cortical neurons, hypothalamus, cerebellum were shown to increase their tolerance to oxygen deficiency. There was a significant(More)
The dynamics of impulse activity of the cerebellar cortex neurons demonstrated in acute experiments on nembutal-anesthetized and diplacinum-immobilized cats bore evidence that the cerebellum participates in the organism's response to hypoxia. The Purkinje cells proved to be more resistant to hypoxia than the neurons of the neopallium, archipallium, and some(More)
The unit activity was studied in the dorsal and ventral hippocampus of anesthetized and immobilized cats. The state of asphyxia was caused by disconnection of artificial respiration for 3-9 min. The hypoxia induced phasic changes of the neuronal activity. Hippocampal neurons revealed a higher resistance against oxygen deficiency as compared to other brain(More)
Asphyxia produced by discontinuing of artificial respiration for 3-5 min in curarized cats, was well tolerated by some neurons of the cerebral and hypothalamus cortex even when repeated a few times with the interval between asphyxias from 40 to 60 min. In most cases neurons even increased their resistance against subsequent effect of acute oxygen(More)
In anesthetized cats, spontaneous activity was recorded in neurons of the anterior, supraoptic, lateral, ventro-medial and posterior nuclei of the hypothalamus under conditions of oxygen deficit induced by the blood loss or discontinuation of artificial respiration. Phases of activation and suppression of electric activity of different hypothalamic nuclei(More)
Mechanisms involved in long-term stimulation of the c. n. s. neurons of different degrees of complexity (cats, molluscs,) were studied. The hypoxic effect and prolonged transmembrane depolarization of a single neuron were used as long-term stimulation. The pattern of electrophysiological properties of neurons was investigated with microelectrode technique,(More)
In immobilized cats, asphyxia produced biphasic changes of the impulse activity of hypothalamic neurons lasting 3--5 min: a short latency period was followed by an increase of firing rate and then gradual and complete disappearance of the discharges. The inhibition of the impulse activity was similar to that during cathodic depression. On the average, the(More)