Projections from the lowest thoracic and upper lumbar segments to the cerebellar cortex in the rat: An anterograde tracing study.

The projections from the lowest thoracic and upper lumbar (T13 to L3) segments to the cerebellar cortex were examined by anterograde tracing with biotinylated dextran amine in the rat. Unilateral injections resulted in bilateral labeling of mossy fiber terminals in lobules Ib to VI, VIII, IX and copula pyramidis. The majority (64 % of the total 30,526 labeled terminals) were present ipsilaterally in lobules II (8.

Projections from the lowest lumbar and sacral-caudal segments to the cerebellar cortex in the rat: An anterograde tracing study.

The crossed spinocerebellar tracts originate from neurons in the basolateral part of lamina V, the sacral nuclei of Stilling and the ventrolateral part of the ventral horn of the L6 to caudal segments. The present study examined their projection areas in the cerebellar cortex by using anterograde labeling of mossy fiber terminals with biotinylated dextran in the rat. Labeled terminals were distributed bilaterally in lobules I-V of the anterior lobe.