Progressive Supranuclear Palsy

Progressive supranuclear palsy (PSP) has been reported as a disorder mainly characterized by tendency to fall, vertical gaze palsy, and constriction of the body axis, akinesia, cognitive impairment. Patients presenting with these typical clinical features are diagnosed having PSP-Richardson syndrome (PSP-RS). Electronystagmography (ENG) is useful for detection ocular motility disorder, which main feature PSP. In cases PSP, in direction occurs from initial stage disease, prolonged latency reduced velocity saccadic eye movement direction. Horizontal also after intermediate stage. Square wave jerks (SWJ) often recognized disease. terms nystagmus, quick phase impaired due movements, impairment optokinetic nystagmus starts movements. Pursuit (smooth) may be disease progresses. On other hand, vestibulo-ocular reflex maintained even progression late