title: The attention system of the human brain.
authors.affiliation: Department of Psychology, University of Oregon, Eugene 97403.
authors.forename: M I
authors.initials: MI
authors.lastname: Posner
authors.forename: S E
authors.initials: SE
authors.lastname: Petersen
mesh_terms: D001288:Attention / Q000502:physiology*; D001921:Brain / Q000502:physiology*; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D010364:Pattern Recognition, Visual / Q000502:physiology