Saccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallers

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorde Souza, Nathaly Freitas-
Autor(es): dc.creatorBrito, Matheus Belizário-
Autor(es): dc.creatorRodrigues, Sérgio Tosi-
Autor(es): dc.creatorCavalieri, Beatriz Carvalho-
Autor(es): dc.creatorLima, Diego Nera-
Autor(es): dc.creatorde Moraes, Rodolfo Lemes-
Autor(es): dc.creatorBarbieri, Fabio Augusto-
Autor(es): dc.creatorBarela, José Angelo-
Autor(es): dc.creatorPolastri, Paula Fávaro-
Data de aceite: dc.date.accessioned2025-08-21T18:44:50Z-
Data de disponibilização: dc.date.available2025-08-21T18:44:50Z-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s00221-021-06256-9-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/233781-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/233781-
Descrição: dc.descriptionThis 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.-
Descrição: dc.descriptionFaculty 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 Paulo-
Descrição: dc.descriptionGraduate Program in Movement Sciences São Paulo State University - UNESP, São Paulo-
Descrição: dc.descriptionFaculty of Sciences Department of Physical Education Human Movement Research Laboratory (MOVI-LAB) São Paulo State University (UNESP), São Paulo-
Descrição: dc.descriptionInstitute of Bioscience Department of Physical Education Movement Studies Laboratory (LEM) São Paulo State University (UNESP), São Paulo-
Descrição: dc.descriptionFaculty 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 Paulo-
Descrição: dc.descriptionGraduate Program in Movement Sciences São Paulo State University - UNESP, São Paulo-
Descrição: dc.descriptionFaculty of Sciences Department of Physical Education Human Movement Research Laboratory (MOVI-LAB) São Paulo State University (UNESP), São Paulo-
Descrição: dc.descriptionInstitute of Bioscience Department of Physical Education Movement Studies Laboratory (LEM) São Paulo State University (UNESP), São Paulo-
Formato: dc.format395-406-
Idioma: dc.languageen-
Relação: dc.relationExperimental Brain Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectFalls-
Palavras-chave: dc.subjectGaze-
Palavras-chave: dc.subjectOlder fallers-
Palavras-chave: dc.subjectOptical flow-
Palavras-chave: dc.subjectPostural control-
Palavras-chave: dc.subjectVisual-motor coupling-
Título: dc.titleSaccadic eye movement performance reduces visual manipulation influence and center of pressure displacements in older fallers-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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