AI Article Synopsis
- Forearm blood flow was assessed using a technique called venous occlusion plethysmography during both rest and a short emotionally stressful task.
- During the stress task, not only did the average forearm blood flow rise, but the individual blood flow measurements also showed more variability compared to rest, indicating heightened emotional stress.
- The administration of a tranquillizer (thioridazine) and a beta-blocker (toliprolol) reduced this increased variability in blood flow during stress without affecting the overall increase in blood flow.
Article Abstract
Forearm blood flow was measured four times per minute by venous occlusion plethysmography during rest and during a brief emotionally stressful mental task. During emotional stress not only was the mean forearm blood flow increased, but the single blood flow values fluctuated more than at rest. The greater fluctuation, expressed statistically as the variance, was an indicator of emotional stress, at least as sensitive as the mean increase in the blood flow. Both a tranquillizer (thioridazine) and a beta-blocker (toliprolol) reduced the greater variance during the emotionally stressful situation in doses insufficient to diminish the mean increase in forearm blood flow.
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| http://dx.doi.org/10.1007/BF00542124 | DOI Listing |
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