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HENRY G. SCHWARTZ, M.D.

Arch Neurol Psychiatry 1937;38(2):308-320.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

It has been postulated that there are five levels through which autonomic reflexes may be mediated (fig. 1). The accompanying figure illustrates schematically the suggested levels, viz., (1) peripheral vascular reflexes having their center in intramural plexuses; (2) axon reflexes; (3) intrasympathetic reflexes which have their center in the ganglia of the sympathetic trunk; (4) medullary and spinal reflexes, and (5) cerebral reflexes.

Evidence for the presence of the first level consists almost entirely of the vasomotor phenomena observed by Leriche and Fontaine.¹ It was noted that the blood vessels were not paralyzed after section of the sympathetic as well as the spinal nerves to a limb. The ability of the vessels to contract and dilate on the external application of heat and cold was construed as the basis for the presence of intramural centers in the arterial wall. According to the report, the vasomotor responses could not be . . . [Full Text PDF of this Article]

Author Affiliations
ST. LOUIS

From the Department of Anatomy, Harvard University Medical School, Boston.

Footnotes
Read before the Boston Society of Neurology and Psychiatry, Dec. 19, 1935.

This work was begun while the author was a Fellow in Medicine of the National Research Council.