EFFECT UPON AURICLE. 



583 



may cause an induced auricular contraction, but this is nearly- 

 synchronous with, or even subsequent to, the induced ventri- 

 cular contraction (Fig. 170, a and h, and Fig. 169, c). 



Fig. 169. 



Stimulation of Ventricle (maximal). 

 «, normal tracing ; J, effect of maximal stimulation. In b inhibition is seen. 



Fig. 170. 



a. b. 



Stimulation of Ventricle (maximal). 



Sometimes reduplication of the ventricular beaD may occur 

 without reduplication of the auricular (Fig, 169, c). 



