Protein conditioners for split ends

A current debate exists as to whether locomotion on foot is guided by optic flow (the apparent motion of the world when the subject is moving) [1–4] or perceived direction [5]. Rushton et al. [5] have shown that the path taken by a participant wearing prism spectacles is described reasonably by a model predicting trajectory from visual direction. We repeated Rushton et al.’s [5] experiment but manipulated the amount of additional information available. Our experiment involved participants walking directly to a target from a starting position 23 m away while wearing 6.84° prism glasses. Participants were instructed to walk directly to the target at a brisk pace. The participants were naïve to the purpose of the experiment and did not observe the trajectory of others before walking themselves. The amount of available information was manipulated in three viewing conditions: reduced cue (n = 8), in which the target was viewed monocularly through a small aperture prism with a 10° field of view over a grass ground plane; intermediate cue (n = 24), in which the target was viewed binocularly through a 35° field of view prism over a grass ground plane with randomly distributed brown markings, and the presence of surrounding buildings; and rich cue (n = 16), in which binocular prisms with an essentially unrestricted field Magazine R545