抄録
Afferent activity from baroreceptors in the isolated heart of the bullfrog was recorded. Two types of volley were observed during the period of the cardiac cycle : a lasting volley of discharges accompanying the QRS complexes in electrocardiogram and a short volley of discharges following immediately after the P wave. Epinephrine, veratridine and ouabain caused an increase in the rate of afferent discharges from baroreceptors in the heart, whereas acetylcholine and ajmaline caused a reduction in the rate. Thus this method allowed a simple measurement of the effect of drugs on the cardiac afferent activities.
