Recent findings have shown that the spinalcord of mammals is capable of limited regeneration. The reparative process involves very limited regeneration of severed nerve fibers and growth of axonal sprouts. In addition, partially deafferented neurons proximal to the site of spinal cord lesion undergo morphological alteration. Following hemisection of the spinal cord nerve fibers reinnervate the morphologically altered neurons proximal to the site of lesion. The present paper reports an investigation of the process in rat, monkey, and man.
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Bernstein et al. (2008) studied this question.