Summary
Electric activity of the muscles of the nose and of the diaphragm was investigated in rabbits. It was revealed that the amplitudes of action currents of these muscles grow simultaneously in true asphyxia. In “simulated asphyxia”, i.e., in disturbances of respiration caused by obstruction of nostrils or trachea in tracheotomized animals, the electric activity of the diaphragm is changed much less than in that of nose muscles. Analysis of this phenomenon suggests that the character of the movements of respiratory muscles is determined not only by the character of impulses from the respiratory center, but also by the change in excitability of peripheral motoneurons.
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Goryunova, T.I., Morozova, I.A. On the reflex mechanism of disturbances in respiratory motions with lesions of the upper respiratory tract (in the phenomenon of “simulated asphyxia”). Bull Exp Biol Med 44, 1058–1062 (1957). https://doi.org/10.1007/BF01306828
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DOI: https://doi.org/10.1007/BF01306828