[Effect of acute hypoxia on specific and nonspecific brain systems in rabbits].
At a simulated altitude of 8500-9000 m, an increase in the amplitude of the early positive and negative phase of the thalamic-cortical evoked potentials, and a slight prolongation of the latent period were seen. Changes in the reticulo-cortical and hypothalamo-cortical evoked potentials included a pronounced inhibition of their negative phase. In the EEG slow delat-waves increased gradually, becoming the major rhythm. The presence of EEG signs of the development of inhibitory processes in the cortex suggested that the changes in evoked potentials were also a result of inhibition of cortical neurons. Hypoxia-adapted rabbits tolerated acute hypoxia much better. They exhibited less pronounced changes in the electric manifestations of the function of specific and nonspecific projection systems of the brain.
D000208:Acute Disease; D000531:Altitude; D000818:Animals; D001273:Atmosphere Exposure Chambers; D001921:Brain / Q000503:physiopathology*; D002540:Cerebral Cortex / Q000503:physiopathology; D004569:Electroencephalography; D005071:Evoked Potentials; D007031:Hypothalamus / Q000503:physiopathology; D000860:Hypoxia / Q000503:physiopathology*; D011817:Rabbits; D012154:Reticular Formation / Q000503:physiopathology; D013788:Thalamus / Q000503:physiopathology
Vliianie ostroĭ gipoksii na spetsificheskie i nespetsificheskie sistemy mozga u krolikov.