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Proprioception and Vibration Sensibility Discrimination in the Absence of the Posterior Columns
Robert J. Schwartzman, MD;
Morton D. Bogdonoff, MD
Arch Neurol. 1969;20(4):349-353.
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| Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings. |
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THE SENSORY system carried in the dorsal columns and medial lemniscus has been clearly shown by Mountcastle and others1,2 to have the neurophysiological attributes essential for discriminative touch: its neurons are somatotopically organized at each successive level and subtend small contralateral peripheral receptive fields that are activated by mode specific mechanoreceptive stimuli. The security of synaptic transmission of this afferent information concerning the spatial and temporal sequence of stimuli is its most distinguishing feature. The ability to detect a change in the position of a limb and the ability to detect vibration have been considered functions of this sensory system.3,4 Pathological lesions confined solely to the dorsal columns are believed to affect both modalities. However, there have been numerous reports of patients with dorsal funicular lesions in whom vibration sensibility and proprioception were not affected to the same degree, and many in whom no clinical deficit was
. . . [Full Text PDF of this Article]
Author Affiliations
Philadelphia; Durham, NC
From the University of Pennsylvania, Philadelphia (Dr. Schwartzman) and Duke University Medical School Durham, NC (Dr. Bogdonoff).
Footnotes
Submitted for publication Sept 11, 1968; accepted Sept 13.
Reprint requests to Department of Neurology, Hospital of the University of Pennsylvania, 36th and Spruce St, Philadelphia 19104 (Dr. Schwartzman).
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