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Nucleus Z in the rat: Spinal afferents from collaterals of dorsal spinocerebellar tract neurons

Proprioceptive information from the hindlimb of the cat is now known to be relayed to the somatosensory thalamus and cortex via axons in the dorsolateral fasciculus and a medullary relay in nucleus z. The aim of this study was to identify nucleus z in the rat, to locate the cells of origin of spinal afferents to nucleus z, and to determine whether they are collaterals of the dorsal spinocerebellar tract.