Dissociation of ophthalmokinetic and melokinetic attention in unilateral neglect

A line cancellation task was performed by 38 right brain-damaged patients with unilateral neglect under four different conditions: normal and mirror-reversed view, with and without cueing. Two types of uni-lateral neglect were distinguished by directing ophthalmo- and me-lokinetic components of visuomanual scanning to opposite sides of the stimulus array. In ophthalmokinetic neglect, contralesional visual scanning of the stimulus array was defective, while manual scanning was unimpaired. The converse was true of melokinetic neglect Ophthalmokinetic neglect was predominantly associated with poste-rior brain damage, while melokinetic neglect was predominantly as-sociated with frontal or subcortical brain damage. In a few instances, cueing visuomanual scanning toward the neglected side of the stim-ulus array converted ophthalmokinetic into melokinetic neglect and vice versa. The results are held to be indicative of two components of space representation and to provide further evidence of response