title: Abnormal eye movements in three types of chorea.
abstract: Chorea is an abnormal movement characterized by a continuous flow of random muscle contractions. This phenomenon has several causes, such as infectious and degenerative processes. Chorea results from basal ganglia dysfunction. As the control of the eye movements is related to the basal ganglia, it is expected, therefore, that is altered in diseases related to chorea. Sydenham's chorea, Huntington's disease and neuroacanthocytosis are described in this review as basal ganglia illnesses that can present with abnormal eye movements. Ocular changes resulting from dysfunction of the basal ganglia are apparent in saccade tasks, slow pursuit, setting a target and anti-saccade tasks. The purpose of this article is to review the main characteristics of eye motion in these three forms of chorea.
authors.affiliation: Universidade Federal de Minas Gerais, Programa de Pós-Graduação em Neurociências, Belo Horizonte MG, Brasil.
authors.forename: Tiago
authors.initials: T
authors.lastname: Attoni
authors.affiliation: Universidade Federal de Minas Gerais, Departamento de Medicina Interna, Serviço de Neurologia, Belo Horizonte MG, Brasil.
authors.forename: Rogério
authors.initials: R
authors.lastname: Beato
authors.affiliation: Aix-Marseille Université /CNRS, Laboratoire Parole et Langage, Aix-en-Provence, France.
authors.forename: Serge
authors.initials: S
authors.lastname: Pinto
authors.affiliation: Universidade Federal de Minas Gerais, Departamento de Medicina Interna, Serviço de Neurologia, Belo Horizonte MG, Brasil.
authors.forename: Francisco
authors.initials: F
authors.lastname: Cardoso
mesh_terms: D001479:Basal Ganglia / Q000503:physiopathology; D002819:Chorea / Q000503:physiopathology*; D005260:Female; D006801:Humans; D006816:Huntington Disease / Q000503:physiopathology*; D008297:Male; D054546:Neuroacanthocytosis / Q000503:physiopathology*; D012438:Saccades / Q000502:physiology*