Impairment of visually evoked eye movements with a unilateral parieto-occipital lesion.
A 65-year-old woman had reduced and slowed visually guided saccades contralateral to a parieto-occipital tumour, contrasting with normal voluntary saccades. Ipsilateral pursuit movements were also impaired. These findings suggest that the parieto-occipital region may be critical for generating all visually evoked eye movements. The full-field pursuit was more impaired than the foveal pursuit; this unusual dissociation may occur when the lesion involves more the interhemispheric than the intrahemispheric occipito-parietal connecting fibres.
D001932:Brain Neoplasms / Q000000981:diagnostic imaging / Q000503:physiopathology*; D005133:Eye Movements; D005260:Female; D005910:Glioma / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged; D009778:Occipital Lobe; D010296:Parietal Lobe; D010775:Photic Stimulation; D014057:Tomography, X-Ray Computed