Reproduction of the primary rhythms of excitation in cardiac activity of neonatal rat pups
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It is shown that during activation of the central N-cholinergic systems, the cardiac pacemaker elements in neonatal rat pups are capable of switching between discontinuous rhythmic activity and the generation of periodic excitation, when complexes of cardiac contractions at a rate of 60 min−1 alternate with 5–15-sec intervals of rest. This type of activity is close to the primary rhythms of excitation, which are characteristic of the activity of excitatory structures during the early phylo- and ontogenetic stages of development.
Key Wordsontogenesis cardiac rhythm cholinomimetics
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