M G Kariakin

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Milk ejection reflex (MER) was studied in the lactating rat measuring the intramammary pressure during mechanical stimulation of the nipples with vacuum and pressure. The incidence of MER was 60-80% (latency 19 +/- 5 sec) after short-lasting (10-20 sec) stimulation of the nipples. The periods of MER increased when the frequency of stimulation of the nipples(More)
The motor activity of newborn rats sucking on anesthetized mothers was studied during the milk ejection reflex. When sucking before obtaining milk every 22 +/- 12 sec, newborn rats displayed an increased motor activity which lasted for 5 +/- 3 sec and coincided with the period of high-amplitude fluctuations of the pressure exerted on the nipple. The periods(More)
Evoked reactions of the hypothalamic arcuate and medial preoptic nuclei neurons were recorded when the hippocampus was stimulated by single stimuli in anaesthetized rats. In the arcuate nucleus phasic responses and primary inhibition were found to be dominant and in the medial preoptic nucleus--both phasic and nonspecifical responses. After injection of the(More)
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