Four years ago I announced in my inaugural thesis (Research and experimentation on the physiology of the spinal cord, pp. 22 and 26.—Paris, January 3, 1846) that section of a lateral half of the spinal cord does not destroy sensation in the parts of the body which receive their nerve supply from the portion of the cord separated from the brain. This finding was similar to those of Schoeps, Van Deen and Stilling and contrary to the statements of Kürschner, M. Longet and other physiologists. Since that time I have had occasion to do this experiment more than sixty times either in my courses, or particularly in the process of studying all the circumstances of the phenomenon, or finally to satisfy many peoples' curiosity. This is what I have seen:
1. Immediately after cutting a lateral half of the cord in the dorsal region of a mammal, sensation appears very diminished
Brown-Séquard M. ON THE TRANSMISSION OF SENSORY IMPRESSIONS BY THE SPINAL CORD. Arch Neurol. 1968;19(3):347–348. doi:10.1001/archneur.1968.00480030125016
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