title: Quantitative study of "on-off" fluctuations in the ocular motor system in Parkinson's disease.
mesh_terms: D000368:Aged; D005133:Eye Movements / Q000187:drug effects; D006801:Humans; D007980:Levodopa / Q000009:adverse effects / Q000627:therapeutic use; D008875:Middle Aged; D010300:Parkinson Disease / Q000175:diagnosis*; D011597:Psychomotor Performance / Q000187:drug effects; D011698:Pursuit, Smooth / Q000187:drug effects; D012438:Saccades / Q000187:drug effects
chemical_list: D007980:Levodopa