Modeling upper eyelid kinematics during spontaneous and reflex blinks

Detalhes bibliográficos
Autor(a) principal: Malbouisson, Jorge Mário Carvalho
Data de Publicação: 2010
Outros Autores: Messias, André, Garcia, Denny Marcos, Cechetti, Sheila de Paula, Barbosa, José Carlos, Cruz, Antonio Augusto Velasco e
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/5659
Resumo: Acesso restrito: Texto completo. p.119-125.
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spelling Malbouisson, Jorge Mário CarvalhoMessias, AndréGarcia, Denny MarcosCechetti, Sheila de PaulaBarbosa, José CarlosCruz, Antonio Augusto Velasco eMalbouisson, Jorge Mário CarvalhoMessias, AndréGarcia, Denny MarcosCechetti, Sheila de PaulaBarbosa, José CarlosCruz, Antonio Augusto Velasco e2012-04-19T13:37:35Z20100165-0270http://www.repositorio.ufba.br/ri/handle/ri/5659Journal of Neuroscience MethodsAcesso restrito: Texto completo. p.119-125.To test a mathematical model for measuring blinking kinematics.Spontaneous and reflex blinks of 23 healthy subjects were recorded with two different temporal resolutions. A magnetic search coil was us d to record 77 blinks sampled at 200 Hz and 2 kHz in 13 subjects.A video system with low temporal resolution (30 Hz) was employed to register 60 blinks of 10 other subjects. The experimental data points were fitted with a model that assumes that the upper eyelid movement can be divided into two parts: an impulsive accelerated motion followed by a damped harmonic oscillation. All spontaneous and reflex blinks, including those recorded with low resolution, were well fitted by the model with a median coefficient of determination of 0.990. No significant difference was observed when the parameters of the blinks were estimated with the under-damped or critically damped solutions of the harmonic oscillator. On the other hand, the over-damped solution was not applicable to fit any movement. There was good agreement between the model and numerical estimation of the amplitude but not of maximum velocity. Spontaneous and reflex blinks can be mathematically described as consisting of two different phases. The down-phase is mainly an accelerated movement followed by a short time that represents the initial part of the damped harmonic oscillation. The latter is entirely responsible for the up-phase of the movement.Depending on the instantaneous characteristics of each movement, the under-damped or critically damped oscillation is better suited to describe the second phase of the blink.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-04-19T13:37:35Z No. of bitstreams: 1 __ac.els-cdn.com_S016502...bf6811d7f6d74c3c53fa740ee7563.pdf: 375216 bytes, checksum: 0e4181ac4785e73c432f37cdc60c8d61 (MD5)Made available in DSpace on 2012-04-19T13:37:35Z (GMT). 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dc.title.pt_BR.fl_str_mv Modeling upper eyelid kinematics during spontaneous and reflex blinks
dc.title.alternative.pt_BR.fl_str_mv Journal of Neuroscience Methods
title Modeling upper eyelid kinematics during spontaneous and reflex blinks
spellingShingle Modeling upper eyelid kinematics during spontaneous and reflex blinks
Malbouisson, Jorge Mário Carvalho
Blink
Harmonic oscillation
Mathematical model
title_short Modeling upper eyelid kinematics during spontaneous and reflex blinks
title_full Modeling upper eyelid kinematics during spontaneous and reflex blinks
title_fullStr Modeling upper eyelid kinematics during spontaneous and reflex blinks
title_full_unstemmed Modeling upper eyelid kinematics during spontaneous and reflex blinks
title_sort Modeling upper eyelid kinematics during spontaneous and reflex blinks
author Malbouisson, Jorge Mário Carvalho
author_facet Malbouisson, Jorge Mário Carvalho
Messias, André
Garcia, Denny Marcos
Cechetti, Sheila de Paula
Barbosa, José Carlos
Cruz, Antonio Augusto Velasco e
author_role author
author2 Messias, André
Garcia, Denny Marcos
Cechetti, Sheila de Paula
Barbosa, José Carlos
Cruz, Antonio Augusto Velasco e
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Malbouisson, Jorge Mário Carvalho
Messias, André
Garcia, Denny Marcos
Cechetti, Sheila de Paula
Barbosa, José Carlos
Cruz, Antonio Augusto Velasco e
Malbouisson, Jorge Mário Carvalho
Messias, André
Garcia, Denny Marcos
Cechetti, Sheila de Paula
Barbosa, José Carlos
Cruz, Antonio Augusto Velasco e
dc.subject.por.fl_str_mv Blink
Harmonic oscillation
Mathematical model
topic Blink
Harmonic oscillation
Mathematical model
description Acesso restrito: Texto completo. p.119-125.
publishDate 2010
dc.date.issued.fl_str_mv 2010
dc.date.accessioned.fl_str_mv 2012-04-19T13:37:35Z
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://www.repositorio.ufba.br/ri/handle/ri/5659
dc.identifier.issn.none.fl_str_mv 0165-0270
dc.identifier.number.pt_BR.fl_str_mv Journal of Neuroscience Methods
identifier_str_mv 0165-0270
Journal of Neuroscience Methods
url http://www.repositorio.ufba.br/ri/handle/ri/5659
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 DOI: 10.1016/j.jneumeth.2010.06.006
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
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