Spinogracile fibers

Spinogracile fibers comprise the axonal projections of first-order sensory neurons of the dorsal column-medial lemniscal pathway, that extend from the posterior horns–below the T6 spinal level–and ascend ipsilaterally within the fasciculus gracilis to relay sensory information from the lower half of the body. They transmit somatic sensory information pertaining to vibration, proprioception, and two-point discrimination. These fibers terminate in the medulla by synapsing at the gracile nuclei.

Please note that the spinogracile fibers are the individual axons, while the fasciculus gracilis is the tract or bundle that these fibers collectively form on the dorsal aspect of medulla oblongata.