Internuclear ophthalmoplegia of abduction. Isolated impairment of phasic ocular motor activity in supranuclear lesions.
Abduction saccadic movement slowed to either side without any limitation in the end position occurred in a patient. This ocular motor abnormality constituted a mirror image of the well-known internuclear ophthalmoplegia of abduction. Intermuclear ophthalmoplegia of either type demonstrates that a lesion between the center for conjugate gaze and the ocular motor nuclei can impair phasic activity of the eye muscles without reducing their tonic function.
D000328:Adult; D001927:Brain Diseases / Q000150:complications*; D002675:Child, Preschool; D004569:Electroencephalography; D004576:Electromyography; D004585:Electrooculography; D005133:Eye Movements; D005260:Female; D006801:Humans; D009103:Multiple Sclerosis / Q000150:complications; D009886:Ophthalmoplegia / Q000209:etiology*; D014463:Ultrasonography