What resolves this contention: Whether basal ganglia and cerebellum interact on…

What resolves this contention: Whether basal ganglia and cerebellum interact only at the level of cerebral cortex (classical parallel-loop assumption) or also via direct subcortical pathways. / Direct subcortical pathways link the cerebellum and basal ganglia in humans, including dentate-to-GPi and dentate-to-substantia nigra routes. / Cortico-basal ganglia parallel circuits are conceptualized without subcortical cerebellum-basal ganglia interconnections; cerebellum and basal ganglia are treated as separate parallel systems converging at cortex.