Kuznetsova T G
Nauchnye Doki Vyss Shkoly Biol Nauki. 1991(2):86-93.
The analysis of behavioral reactions and cardiac rhythm of 9-30 days old chimpanzees is given. It has been found that the active emotionally negative reaction with signs of avoidance and the passive defensive reaction of fading appear first. This behavioral reactions are reflected in the mechanisms of the cardiovascular system regulation. The active defensive reaction is accompanied by tachycardia growing from the beginning up to realization, and the passive defensive reaction is accompanied by bradycardia. The emotional reactions influence the tonus of floating nerve even at this age.