Abstract
In this study we measured the postural sway of 28 healthy people while keeping the standing position and providing visually confusing information of other people coming near and passing by on both their sides. The measured conditions were standing between parallel flat bars or without the bars, and with vision fixed or free. The results show that postural sway was not influenced by the presence or absence of the parallel flat bars and the different vision conditions. In the group who were strongly conscious of others' passing, a higher value of postural sway area was only shown with free vision with the parallel flat bars compared to fixed vision. Therefore, we consider that healthy people with free vision who were strongly conscious of others' passing were influenced by the passing people with the parallel flat bars visual information input as peripheral vision, and showed a bigger postural sway than with fixed vision.
