THE NATURE OF MIGRAINE
It was, therefore, also with some hesitation that I accepted the invitation, humbly realizing that I can bring my audience nothing new, and when now, I nevertheless venture to try to speak about the nature of migraine seen from my point of view after a long life of work with migraineological problems, I do it to a very limited extent only on the basis of my own experience, but first and foremost because I base my opinion on the facts with which friends and colleagues have enriched our knowledge through their research, not only through numerous literary publications and lectures, but also and not least through the answers to personal inquiries which I have received with thanks in the course of time.
The effect of unilateral temporal artery feedback on reported headpain in migraine sufferers
Migraine headache pain has been shown to be related to the size of the artery in the affected area (Graham & Wolff, 1938). Pain, therefore, can be reduced through the use of drugs such as ergotamine tartrate, a smooth muscle constrictor. The rationale for many nonchemical biofeedback studies has evolved from these earlier chemical studies. Due to the multilevel effect such drugs may have on headpain, it is not specifically known what extent nonchemical vasoconstriction plays in pain reduction. The purpose of the present study is to further discriminate the relationship between reported headpain in migraine sufferers and the operant control of superficial temporal artery size. Sixteen classic migraine headache sufferers participated in this studyThe analyses revealed that both dilative and constrictive control of superficial temporal artery size could be achieved. Eight of these subjects were able to adequately anticipate the beginning of headache in order to come to the laboratory and be observed during the first hour of headpain. Dilative and constrictive control of superficial temporal artery size was maintained during headache. A significant increase in pain during headache was shown while subjects concentrated on the dilation of their superficial temporal artery. Some evidence was presented suggesting that subjects
The Determination of Physicochemical Characteristics of Biodiesel and Its Blending Oils
The viscosity,combustion heat,sulfur content,carbon residue,ash,flash point,moisture and cetane value of biodiesel and its blending oils with diesel were determined.The influence of temperature on the viscosity was studied,and the physicochemical characteristics of biodiesel and its blending oils were compared with diesel.The results indicated that biodiesel and its blending oils had some superior performances and good application prospect.