from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of or relating to sensory nerve fibers that enable the perception of slight differences in the intensity of stimuli, especially touch or temperature.
# -- Three kinds of sensory impulses pass from the periphery to the brain; (1) deep, or muscular sensibility, (2) protopathic sensibility, and (3) epicritic sensibility.
The fibres concerned are non-medullated and regenerate comparatively quickly after injury, so that protopathic sensibility is regained before epicritic.
_Protopathic sensibility_ is of a lower order than epicritic.
On the same side below the lesion, there is a loss of epicritic, stereognostic and deep sensibility, and on the opposite side below the lesion, loss of the sense of pain and the discrimination between heat and cold.
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