The relationship between two types of upper eyelid movements: saccades and pursuit

Detalhes bibliográficos
Autor(a) principal: Falcão, Marcele F.
Data de Publicação: 2008
Outros Autores: Malbouisson, Jorge Mário Carvalho, Cruz, Antonio Augusto Velasco e, Messias, André
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/14268
Resumo: Texto complete: acesso restrito. p. 2444-2448
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spelling Falcão, Marcele F.Malbouisson, Jorge Mário CarvalhoCruz, Antonio Augusto Velasco eMessias, AndréFalcão, Marcele F.Malbouisson, Jorge Mário CarvalhoCruz, Antonio Augusto Velasco eMessias, André2014-01-06T15:11:59Z20080146-0404http://repositorio.ufba.br/ri/handle/ri/14268v. 49, n. 6Texto complete: acesso restrito. p. 2444-2448Purpose: To establish the relationship between upper eyelid saccades and upper eyelid pursuit movements. Methods: Upper eyelid saccades and periodic sinusoidal upper eyelid pursuit movements were recorded in a sample of controls and patients with Graves upper eyelid retraction. A video-computerized system was used to register both types of movements that accompanied 60° of eye rotation across the upper and lower hemifields. The forced harmonic oscillator model was used to fit saccadic and pursuit movements. Results: Mean mid-pupil eyelid distance for the Graves patients (6.6 ± 1.1 mm) was significantly higher than for the controls (4.6 ± 0.8 mm; t = 7.18; P < 0.00001). Despite the difference in the upper eyelid resting position, saccades and pursuit eyelid movements of both groups were extremely well fitted by underdamped solutions and steady forced solutions of the harmonic oscillator model, respectively. For the controls, the amplitude of the pursuit movements was well correlated with the upward and downward saccades. The amplitude of the eyelid movements of the Graves patients (saccades and pursuit) was significantly reduced compared with that of the controls. Conclusions. Saccadic and pursuit movements of the upper eyelid can be described by the harmonic oscillator model. In healthy subjects and Graves patients, the amplitude of pursuit lid movements is correlated to the saccade amplitude. Pursuit eyelid movements are more difficult to register than saccades, and their measurements do not allow clear separation of the relaxation and contraction properties of the upper eyelid retractors.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2013-12-05T16:42:46Z No. of bitstreams: 1 10.1167iovs.07-1308.pdf: 174753 bytes, checksum: 82c20beb0f5522d0bec63aee1b427718 (MD5)Approved for entry into archive by Flávia Ferreira (flaviaccf@yahoo.com.br) on 2014-01-06T15:11:59Z (GMT) No. of bitstreams: 1 10.1167iovs.07-1308.pdf: 174753 bytes, checksum: 82c20beb0f5522d0bec63aee1b427718 (MD5)Made available in DSpace on 2014-01-06T15:11:59Z (GMT). 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dc.title.pt_BR.fl_str_mv The relationship between two types of upper eyelid movements: saccades and pursuit
dc.title.alternative.pt_BR.fl_str_mv Investigative Ophthalmology & Visual Science
title The relationship between two types of upper eyelid movements: saccades and pursuit
spellingShingle The relationship between two types of upper eyelid movements: saccades and pursuit
Falcão, Marcele F.
Pursuit movements
Eyelid retraction
title_short The relationship between two types of upper eyelid movements: saccades and pursuit
title_full The relationship between two types of upper eyelid movements: saccades and pursuit
title_fullStr The relationship between two types of upper eyelid movements: saccades and pursuit
title_full_unstemmed The relationship between two types of upper eyelid movements: saccades and pursuit
title_sort The relationship between two types of upper eyelid movements: saccades and pursuit
author Falcão, Marcele F.
author_facet Falcão, Marcele F.
Malbouisson, Jorge Mário Carvalho
Cruz, Antonio Augusto Velasco e
Messias, André
author_role author
author2 Malbouisson, Jorge Mário Carvalho
Cruz, Antonio Augusto Velasco e
Messias, André
author2_role author
author
author
dc.contributor.author.fl_str_mv Falcão, Marcele F.
Malbouisson, Jorge Mário Carvalho
Cruz, Antonio Augusto Velasco e
Messias, André
Falcão, Marcele F.
Malbouisson, Jorge Mário Carvalho
Cruz, Antonio Augusto Velasco e
Messias, André
dc.subject.por.fl_str_mv Pursuit movements
Eyelid retraction
topic Pursuit movements
Eyelid retraction
description Texto complete: acesso restrito. p. 2444-2448
publishDate 2008
dc.date.issued.fl_str_mv 2008
dc.date.accessioned.fl_str_mv 2014-01-06T15:11:59Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/14268
dc.identifier.issn.none.fl_str_mv 0146-0404
dc.identifier.number.pt_BR.fl_str_mv v. 49, n. 6
identifier_str_mv 0146-0404
v. 49, n. 6
url http://repositorio.ufba.br/ri/handle/ri/14268
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1167/iovs.07-1308
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