AbstractFibres of the ventral spino‐cerebellar tract have been identified by antidromic activation from the anterior cerebellar lobe cortex. These neurones received polysynaptic excitation and inhibition from flexor reflex afferents in both contralateral and ipsilateral nerves and some were, in addition, monosynaptically activated from contralateral group I muscle afferents. The conduction velocities of the fibres ranged from 70 to 120 m/sec. Most fibres terminated contralaterally in a longitudinal zone consisting of a medial strip of the intermediate cortex and a lateral strip of the vermal corte