[Optic ataxia localised in the left side of both 2 left homonymous visual hemifields]

Ocular ataxia localised to the left limbs on the left homonymous visual hemifields occurred after section of the right parieto-occipital junction zone performed to remove an intraventricular tumour. Since the right upper limb was unaffected, it must be presumed that, in man, there are two types of occipito-frontal connections, direct and crossed.