title: Parkinsonian tremor, manic-depressive psychosis and servomechanisms.
authors.forename: E
authors.initials: E
authors.lastname: BARRETT
mesh_terms: D001714:Bipolar Disorder; D006801:Humans; D001523:Mental Disorders; D020734:Parkinsonian Disorders; D011618:Psychotic Disorders; D014202:Tremor