THE INCREASED ACCOMMODATION TO ELECTRIC CURRENTS PRODUCED BY VAGAL INHIBITION OF THE TURTLE ATRIUM

Publisher Website
Google Scholar
Abstract
The previously reported increase of rheobase and shortening of chronaxie during vagal inhibition of the turtle atrium is confirmed. The use of constant currents and of currents rising slowly to a constant level indicates that vagal inhibition may produce changes in the atrium such that it shows a great increase in its accommodation to applied stimulating currents. Measurements of excitability using induction shocks or condenser discharges of brief duration do not show a consistent elevation of threshold during vagal inhibition. The exptl. findings are compatible with the interpretation that the observed changes in excitability of the vagus inhibited turtle atrium result from an increased accommodation to the stimulating currents.

This publication has 2 references indexed in Scilit: