[Age development of the rhythmical electrical activity in the cervical, sympathetic trunk in rats and cats].
Electrical activity of the cervical sympathetic trunk was studied in newborn, 10-, 20-, 30-day-old, two- and six-month-old rats and cats using the spectral analysis. The amplitude of discharges increased from the period of birth until the first moth of life in rats and until 20 days in cats. Frequencies synchronous with cardiac and respiration those were revealed in all animals. Heart-related frequencies were predominant in rats older than 20 days. Other frequencies were lower. In kittens, we did not observe any age-dependent changes of the spectrum of sympathetic nerve discharge. Discharges with high frequencies were observed in cats from the moment of birth.
Masliukov
P M
PM
Korzina
M B
MB
Emanuĭlov
A I
AI