“…The possible negative consequences of unstable gait are numerous. There have also been reports of individuals who, while driving their automobile after a flight simulator exposure, had to pull off to the side of the road because they became too disoriented to continue (Kennedy, Frank, McCauley, Bittner, Root, and Binks, 1984;Miller and Goodson, 1958). Kellogg, Coward, and Castore (1980) have reported the onset of visual flashbacks and "bedsp1ns" as late as 10…”