[Cardiorespiratory synchronism: revealing in human, dependence on properties of nervous system and functional states of an organism]. / Serdechno-dykhatel'nyi sinkhronizm: vyiavlenie u cheloveka, zavisimost' ot svoistv nervnoi systemy i funktsional'nykh sostoianii organizma.

Cardiorespiratory synchronism (CRS) shows that at the breathing frequency, which as usual exceeds the baseline heart rhythm, the heart makes one contraction per each breathing. It is shown that CRS arises as a result of reproduction by the heart the rhythm of signals, coming to the heart via vagus nerves. CRS characterized by the synchronization range, duration of its development after the beginning of the rapid respiration, difference between the baseline heartbeat frequency and lower limit of synchronization range. The CRS parameters were determined in humans at the age of 5-65. The CRS parameters depends on nervous system type, vegetative tonus of the nervous system and functional states of an organism.

[Control of the cardiac rhythm in the cat by stimulation of the carotid sinus nerve with pulse bursts]. / Upravlenie ritmom serdtsa koshki pri razdrazhenii sinokarotidnogo nerva zalpami impul'sov.

The cat heart rate responded with a systole to a burst stimulation of the sinocarotid nerve. A change of the stimulation frequency entailed a respective change in the systole frequency within the range 179.2 +/- 1.3-173.2 +/- 1.5 systoles per minute.