Two ascending spinal pathways in the ventral part of the cord.

Two pathways with axons ascending in the ventral part of the cord have been identified as not belonging to the ventral spinocerebellar tract because the axons could not be antidromically activated from the cerebellar cortex. One pathway ascends to the lower brain stem, is polysynaptically activated from the flexor reflex afferents of a bilateral receptive field, and receives strong excitatory and inhibitory actions from the anterior cerebellar lobe. The other pathway, with unknown Termination, is polysynaptically activated from the flexor reflex afferents of a contralateral receptive field, and is not influenced from the anterior cerebellar lobe.

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