摘要：

This chapter discusses the ascending spinal pathways activated from hindlimb afferents. The functional organization of various pathways, such as (1) the dorsal spinocerebellar tract; (2) the spinocervical tract; (3) the ventral spinocerebellar tract; and (4) a spinobulbar tract are reviewed. On stimulation of cutaneous afferents, an evoked potential can be recorded from the anterior cerebellar cortex and this potential can be ascribed to monosynaptic activation of dorsal spinocerebellar tract (DSCT) neurones. Various subgroups of DSCT neurones have been identified by antidromic stimulation from the cerebellar cortex. It is an important principle that an ascending spinal pathway may have subdivisions with widely different function. Both with the neurones activated by spindle afferents and those activated by tendon organ afferents, there is a restricted receptive field. The chapter discusses the significance of the actions from the flexor reflex afferents on ascending spinal pathways.

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