Dysmetria (overshooting or undershooting on finger-to-nose or heel-shin testing) is a classic cerebellar sign, seen on the same side as the lesion.

• In cerebellar ataxia the unsteadiness is present whether the eyes are open or closed, so a positive Romberg sign does not point to the cerebellum.
• Hyperreflexia is an upper motor neuron sign.
• Dyskinesia is a basal ganglia or drug-related movement disorder.