Dysfunction of the spinocerebellum  (vermis and associated areas near the midline) presents itself with a wide-based "drunken sailor" gait (called truncal ataxia), characterised by uncertain starts and stops, lateral deviations, and unequal steps.
Dysfunction in the spinocerebellum (vermis and surrounding areas near the midline) results in a wide-based "drunken sailor" gait (truncal ataxia), characterized by unsteady movements including starting and stopping difficulties, lateral deviations, and uneven steps.