Ascending Axon Degeneration Following Anterolateral Cordotomy. An Experimental Study in the Monkey

“We know much less of the sensory path. Even in the spinal cord it is uncertain. The older theory (of Brown-Séquard), that sensation is chiefly conducted in the gray matter, is not disproved, but there is reason to believe that some sensation is conducted by the fibres of the lateral column in front of the pyramidal tract, any by fibres of the posterior columns. In the medulla and pons the path probably passes up in the posterior half, above the ‘fillet’, perhaps chiefly in the curious network of fibres called ‘the reticular formation’”.