title: The problem of perseveration.
authors.affiliation: Aphasia Research Center, Boston VA Healthcare System, Boston, Massachusetts, USA.
authors.forename: Nancy
authors.initials: N
authors.lastname: Helm-Estabrooks
mesh_terms: D006801:Humans; D009422:Nervous System Diseases / Q000150:complications; D013064:Speech Disorders / Q000209:etiology* / Q000503:physiopathology*; D014705:Verbal Behavior