[Participation of reticular neurons of the cat medulla oblongata in the integration of the respiration center activity]. / Uchastie retikuliarnykh neironov prodolgovatogo mozga koshki v integrativnoi deiatel'nosti dykhatel'nogo tsentra.

Reticular neurons of the respiratory centre are divided into three groups. The 1st one is located in the medial areas and accepts afferents from chemoreceptors. The 2nd one is located in inspiratory and expiratory areas of the centre and take part in integration of afferent signals and activation of the effector mechanism. The 3rd group is present in both areas and organizes the effector activity of the centre. Electrical stimulation of the brain stem nuclei can modify reticular neurons in lateral areas.

[Morphological and functional characteristics of the inspiratory and expiratory formations of the medial and lateral areas of the respiratory center]. / Morfologicheskaia i funktsional'naia kharakteristika inspiratornykh i ékspiratornykh obrazovanii medial'noi i lateral'noi zon dykhatel'nogo tsentra.

The density of the reticular and respiratory neurones in the inspiratory and the exspiratory "points" of medial and lateral zones of the medulla oblongata the electrical stimulation of which is accompanied by the maximum inspiratory and exspiratory effects has been studied in the anesthetized cats. The electrophysiological and morphological data allow to relate the structures studied to the respiratory centre and confirm the correct picking out of two functionally heterogeneous zones - the medial and lateral.

[Reciprocal connections of respiratory center nuclei]. / O vzaimnykh sviaziakh iader dykhatel'nogo tsentra.

The reactions of 181 respiratory neurons of solitary and ambiguous nuclei were studied on 64 cats in the course of stimulation of inspiratory and expiratory zones of gigantocellular nuclei. A study was also made of the reactions of 224 reticular and 9 respiratory neurons of these zones during stimulation of solitary and ambiguous nuclei. Various reactions were recorded in response to the stimulation. Therefore the nuclei of the respiratory center possess various information. In the course of stimulation of the gigantocellular nucleus there predominated an increase in the neuronal electrical activity. On the contrary, inhibition of respiratory and reticular neurons of the gigantocellular nucleus was predominant in the course of stimulation of solitary and ambiguus nuclei. It is suggested that the interactions described underlie the formation of circular rhythms of respiratory center stimulation.