Carl D. Camp
1909 Journal of Nervous and Mental Disease  
Dissociation of sensation occurs in cerebral affections and also in affections of peripheral nerves, but most commonly from affections of the spinal cord. The extent of this last dissociation of sensation is topographically similar to that of complete anes¬ thesia from spinal lesion. It has been described as produced by trauma to the spinal cord, syringomyelia, pachymeningitis (Her¬ zen (i)) ; traumatic hematomyelia (Minor (2), Bergman (3)) ; tumor of the cord (Bruns (4) and Schlesinger (5),
more » ... Schlesinger (5), Cushing (6)); gumma (Lahr (7) , Hanot (8)); glioma (Henneberg (9)) ; spinal syphilis (Brissaud (10)) ; compression of the cord (Edsall (11), Marinesco (12), Vines (13)); myelitis (Pick (14)); and various other spinal diseases and injuries. It will be seen that the dissociation occurs in widely varied conditions and probably depends on the part of the spinal cord affected rather than on the nature of the process. At the present day it is generally conceded that various forms of sensation are conveyed upward in the spinal cord by systems of fibers which take their course in different portions of the, cord. This view, first announced by Van Gehuchten (15) in 1893, according to his own statement, was at first thought to be true only for fibers conveying sensation of pain and temperature. Since then it has been found possible to separate the course in the spinal cord of other forms of sensation. This theory superseded the old idea that the losses of differ¬ ent forms of sensation were due to different degrees of destruc¬ tion of the same fiber tracts, and is also better supported by the clinical and pathological evidence than the hypotheses of those who assert that all forms of sensation are carried interchange-
doi:10.1097/00005053-190902000-00002 fatcat:4k2kaxoegjettbh7zbjowdiyli