Saccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallers
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s00221-021-06256-9 http://hdl.handle.net/11449/233781 |
Resumo: | This study examined changes in postural control and gaze performance of faller and non-faller older adults under conditions of visual tasks and optical flow manipulations. Fifteen older non-fallers (69.8 years, ± 3.2) and fifteen older fallers (71.1 years, ± 6.4) stood on a force platform inside a moving room wearing an eye tracker. Four tasks were performed: gaze fixation; predictable saccades; unpredictable saccades; and free-viewing. The stimuli appeared at a frequency of 1.1 Hz during conditions of predictable and unpredictable saccades. Sixteen trials were divided into two blocks. In the first block, the room remained stationary. In the second block, the room oscillated, without the participant’s awareness, with a 0.6 cm amplitude and 0.2 Hz frequency. Results showed postural sway attenuation in older fallers during the saccadic tasks compared to gaze fixation and free-viewing tasks, in both stationary and moving room conditions. Both groups showed increased center of pressure (CoP) magnitude during the moving room condition and CoP displacements strongly coupled to the room’s movement. The influence of the moving room on the postural sway was reduced during the saccadic tasks for both older groups. Older fallers exhibited higher variability compared to older non-fallers. Gaze behavior differences between groups were dependent on the goals of the visual tasks. Therefore, CoP displacements of older adults are reduced during saccadic tasks regardless of their falling history. However, postural and gaze performance of older fallers suggests increased deterioration of postural and oculomotor control which may be used as a predictor of fall risk. |
id |
UNSP_835b0d5db57580512b79dfd350688da3 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/233781 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Saccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallersFallsGazeOlder fallersOptical flowPostural controlVisual-motor couplingThis study examined changes in postural control and gaze performance of faller and non-faller older adults under conditions of visual tasks and optical flow manipulations. Fifteen older non-fallers (69.8 years, ± 3.2) and fifteen older fallers (71.1 years, ± 6.4) stood on a force platform inside a moving room wearing an eye tracker. Four tasks were performed: gaze fixation; predictable saccades; unpredictable saccades; and free-viewing. The stimuli appeared at a frequency of 1.1 Hz during conditions of predictable and unpredictable saccades. Sixteen trials were divided into two blocks. In the first block, the room remained stationary. In the second block, the room oscillated, without the participant’s awareness, with a 0.6 cm amplitude and 0.2 Hz frequency. Results showed postural sway attenuation in older fallers during the saccadic tasks compared to gaze fixation and free-viewing tasks, in both stationary and moving room conditions. Both groups showed increased center of pressure (CoP) magnitude during the moving room condition and CoP displacements strongly coupled to the room’s movement. The influence of the moving room on the postural sway was reduced during the saccadic tasks for both older groups. Older fallers exhibited higher variability compared to older non-fallers. Gaze behavior differences between groups were dependent on the goals of the visual tasks. Therefore, CoP displacements of older adults are reduced during saccadic tasks regardless of their falling history. However, postural and gaze performance of older fallers suggests increased deterioration of postural and oculomotor control which may be used as a predictor of fall risk.Faculty of Sciences Department of Physical Education Laboratory of Information Vision and Action (LIVIA) São Paulo State University (UNESP), Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, São PauloGraduate Program in Movement Sciences São Paulo State University - UNESP, São PauloFaculty of Sciences Department of Physical Education Human Movement Research Laboratory (MOVI-LAB) São Paulo State University (UNESP), São PauloInstitute of Bioscience Department of Physical Education Movement Studies Laboratory (LEM) São Paulo State University (UNESP), São PauloFaculty of Sciences Department of Physical Education Laboratory of Information Vision and Action (LIVIA) São Paulo State University (UNESP), Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, São PauloGraduate Program in Movement Sciences São Paulo State University - UNESP, São PauloFaculty of Sciences Department of Physical Education Human Movement Research Laboratory (MOVI-LAB) São Paulo State University (UNESP), São PauloInstitute of Bioscience Department of Physical Education Movement Studies Laboratory (LEM) São Paulo State University (UNESP), São PauloUniversidade Estadual Paulista (UNESP)de Souza, Nathaly Freitas [UNESP]Brito, Matheus Belizário [UNESP]Rodrigues, Sérgio Tosi [UNESP]Cavalieri, Beatriz Carvalho [UNESP]Lima, Diego Nera [UNESP]de Moraes, Rodolfo Lemes [UNESP]Barbieri, Fabio Augusto [UNESP]Barela, José Angelo [UNESP]Polastri, Paula Fávaro [UNESP]2022-05-01T10:18:56Z2022-05-01T10:18:56Z2022-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article395-406http://dx.doi.org/10.1007/s00221-021-06256-9Experimental Brain Research, v. 240, n. 2, p. 395-406, 2022.1432-11060014-4819http://hdl.handle.net/11449/23378110.1007/s00221-021-06256-92-s2.0-85118585294Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengExperimental Brain Researchinfo:eu-repo/semantics/openAccess2024-04-24T18:53:20Zoai:repositorio.unesp.br:11449/233781Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:11:49.926432Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Saccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallers |
title |
Saccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallers |
spellingShingle |
Saccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallers de Souza, Nathaly Freitas [UNESP] Falls Gaze Older fallers Optical flow Postural control Visual-motor coupling |
title_short |
Saccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallers |
title_full |
Saccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallers |
title_fullStr |
Saccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallers |
title_full_unstemmed |
Saccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallers |
title_sort |
Saccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallers |
author |
de Souza, Nathaly Freitas [UNESP] |
author_facet |
de Souza, Nathaly Freitas [UNESP] Brito, Matheus Belizário [UNESP] Rodrigues, Sérgio Tosi [UNESP] Cavalieri, Beatriz Carvalho [UNESP] Lima, Diego Nera [UNESP] de Moraes, Rodolfo Lemes [UNESP] Barbieri, Fabio Augusto [UNESP] Barela, José Angelo [UNESP] Polastri, Paula Fávaro [UNESP] |
author_role |
author |
author2 |
Brito, Matheus Belizário [UNESP] Rodrigues, Sérgio Tosi [UNESP] Cavalieri, Beatriz Carvalho [UNESP] Lima, Diego Nera [UNESP] de Moraes, Rodolfo Lemes [UNESP] Barbieri, Fabio Augusto [UNESP] Barela, José Angelo [UNESP] Polastri, Paula Fávaro [UNESP] |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
de Souza, Nathaly Freitas [UNESP] Brito, Matheus Belizário [UNESP] Rodrigues, Sérgio Tosi [UNESP] Cavalieri, Beatriz Carvalho [UNESP] Lima, Diego Nera [UNESP] de Moraes, Rodolfo Lemes [UNESP] Barbieri, Fabio Augusto [UNESP] Barela, José Angelo [UNESP] Polastri, Paula Fávaro [UNESP] |
dc.subject.por.fl_str_mv |
Falls Gaze Older fallers Optical flow Postural control Visual-motor coupling |
topic |
Falls Gaze Older fallers Optical flow Postural control Visual-motor coupling |
description |
This study examined changes in postural control and gaze performance of faller and non-faller older adults under conditions of visual tasks and optical flow manipulations. Fifteen older non-fallers (69.8 years, ± 3.2) and fifteen older fallers (71.1 years, ± 6.4) stood on a force platform inside a moving room wearing an eye tracker. Four tasks were performed: gaze fixation; predictable saccades; unpredictable saccades; and free-viewing. The stimuli appeared at a frequency of 1.1 Hz during conditions of predictable and unpredictable saccades. Sixteen trials were divided into two blocks. In the first block, the room remained stationary. In the second block, the room oscillated, without the participant’s awareness, with a 0.6 cm amplitude and 0.2 Hz frequency. Results showed postural sway attenuation in older fallers during the saccadic tasks compared to gaze fixation and free-viewing tasks, in both stationary and moving room conditions. Both groups showed increased center of pressure (CoP) magnitude during the moving room condition and CoP displacements strongly coupled to the room’s movement. The influence of the moving room on the postural sway was reduced during the saccadic tasks for both older groups. Older fallers exhibited higher variability compared to older non-fallers. Gaze behavior differences between groups were dependent on the goals of the visual tasks. Therefore, CoP displacements of older adults are reduced during saccadic tasks regardless of their falling history. However, postural and gaze performance of older fallers suggests increased deterioration of postural and oculomotor control which may be used as a predictor of fall risk. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-05-01T10:18:56Z 2022-05-01T10:18:56Z 2022-02-01 |
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://dx.doi.org/10.1007/s00221-021-06256-9 Experimental Brain Research, v. 240, n. 2, p. 395-406, 2022. 1432-1106 0014-4819 http://hdl.handle.net/11449/233781 10.1007/s00221-021-06256-9 2-s2.0-85118585294 |
url |
http://dx.doi.org/10.1007/s00221-021-06256-9 http://hdl.handle.net/11449/233781 |
identifier_str_mv |
Experimental Brain Research, v. 240, n. 2, p. 395-406, 2022. 1432-1106 0014-4819 10.1007/s00221-021-06256-9 2-s2.0-85118585294 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Experimental Brain Research |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
395-406 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128906981539840 |