Four subjects aged between 29 and 60 years were examined because of ax
ial motor impairment after hypoxic brain injury. Magnetic resonance im
aging revealed circumscribed lesions of the globus pallidus in every c
ase. The association of freezing of the gait, speech disorders, axial
bradykinesia, and postural disturbances, with no rigidity or tremor an
d little or no distal akinesia, suggests a role of the globus pallidus
in controlling axial motion.