26 



CORA SENNER WINKIN 



Fig. 4. Cat. 45. Repeated cerebral anemia; double vagotomy; 10th successive 

 occlusion; dissociation of reaction curve into two distinctly separated peaks is 

 shown fully established. Second peak in this occlusion is still considerably 

 greater than the first. Pressure falls very low at the end of the response (30 mm. 

 Hg. above base line). Each curve occupies approximately half the period of the 

 reaction. 



Seventeenth successive occlusion: Dissociated curves show little difference 

 in time relations compared with those obtained 2 hours earlier. Difference in 

 contour found in the greater emphasis of the first as compared with the second 

 peak of pressure. The rise in level prior to occlusion represents the recovery of 

 blood pressure after the preceding occlusion following the return of respiratory 

 gasps. 



