A hypothetical explanation for periodic alternating nystagmus: instability in the optokinetic-vestibular system.
D000328:Adult; D001933:Brain Stem / Q000503:physiopathology; D005133:Eye Movements; D005260:Female; D005403:Fixation, Ocular; D006801:Humans; D007699:Kinesthesis / Q000502:physiology; D008297:Male; D008875:Middle Aged; D009039:Motion Perception / Q000502:physiology; D009759:Nystagmus, Pathologic / Q000209:etiology / Q000503:physiopathology*; D012018:Reflex / Q000502:physiology; D012160:Retina / Q000503:physiopathology; D012438:Saccades; D012665:Semicircular Canals / Q000294:innervation; D014726:Vestibular Nuclei / Q000503:physiopathology; D014722:Vestibule, Labyrinth / Q000503:physiopathology*; D014795:Visual Pathways / Q000503:physiopathology