RODDIE, I. C. 
MINUTES 
Figure 5. Forearm blood flow duringemotionalstress. During 
rectangle A, the subject, a departmental head, was given mental 
arithmetic to do. During B, he was led to believe that boiling water 
was being poured on his hand, and during C, he was told that a fire 
had broken out in his office. 
O 3 6 9 
MINUTES 
Figure 6. Effect of severe emotional stress on arterial pres- 
sure, heart rate, forearm blood flow, and hand blood flow. During 
the time represented by the rectangle, it was suggested to the sub- 
ject that he was sufferingfrom severe blood loss (After Blair et al., 
J. Physiol. (Lond.). 148:633, 1959). 
120 
