tailieunhanh - Báo cáo khoa hoc:" Effects of visually simulated roll motion on vection and postural stabilization"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Effects of visually simulated roll motion on vection and postural stabilization | Journal of NeuroEngineering and Rehabilitation BioMed Central Research Open Access Effects of visually simulated roll motion on vection and postural stabilization Shigehito Tanahashi 2 Hiroyasu Ujiket2 Ryo Kozawa2 3 and Kazuhiko Ukai1 Address 1School of Science and Engineering Waseda University Tokyo Japan 2Institute for Human Science and Biomedical Engineering AIST Tsukuba Japan and 3School of Psychology Chukyo University Nagoya Japan Email Shigehito Tanahashi - kg21mj23@ Hiroyasu Ujike - Ryo Kozawa - rkozawa@ Kazuhiko Ukai - ukai@ Corresponding author fEqual contributors Published 9 October 2007 Received 3 June 2006 Journal of NeuroEngineering and Rehabilitation 2007 4 39 doi 1743-0003-4-39 Accepted 9 Oct ber 2007 This article is available from http content 4 1 39 2007 Tanahashi et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Visual motion often provokes vection the induced perception of self-motion and postural movement. Postural movement is known to increase during vection suggesting the same visual motion signal underlies vection and postural control. However self-motion does not need to be consciously perceived to influence postural control. Therefore visual motion itself may affect postural control mechanisms. The purpose of the present study was to investigate the effects of visual motion and vection on postural movements during and after exposure to a visual stimulus motion. Methods Eighteen observers completed four experimental conditions the order of which was counterbalanced across observers. Conditions corresponded to the four possible combinations of rotation direction of the visually simulated