Influence of imposed optic flow characteristics and intention on postural responses.

Full Abstract

This study examined the influence of both optic flow characteristics and intention on postural control responses. Two groups of 10 adults each were exposed to the room's movement either at 0.6 cm/s (low velocity group) or 1.0 cm/s (high velocity group). All the participants stood in the upright stance inside of a moving room and were informed about the room movement only after the fourth trial as they were asked to resist to its influence. Results revealed that participants from both groups were influenced by the imposed visual stimulus in the first trials, but the coupling strength was weaker for the high velocity group. The request to resist the visual influences decreased visual influences on body sway, but only for the low velocity group. These results indicate that intention might play a role in stimulus influences on body sway but it is stimulus dependent.

Author information

Author/s: Barela, Ana M F (AM); Barela, Jose A (JA); Rinaldi, Natalia M (NM); de Toledo, Diana R (DR);

Affiliation: Instituto de Ciencias da Atividade Fisica e Esporte, Universidade Cruzeiro do Sul, Sao Paulo, Brazil.

Journal and publication information

Publication Type: Clinical Trial; Journal Article

Journal: Motor control (Motor Control), published in United States. (Language: eng)

Reference: 2009-Apr; vol 13 (issue 2) : pp 119-29

Dates: Created 2009/05/20; Completed 2009/06/16;

PMID: 19454775, status: MEDLINE (last retrieval date: 6/16/2009, IMS Date: 16 Jun 2009 00:00:00)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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