Vestibular and vestibulo-proprioceptive perception of motion in the horizontal plane in blindfolded man--III. Route inference.

摘要: Abstract The inference of direction and length a subsequent route during performance triangle completion task was studied in blindfolded human subjects. Subjects were transported walked with guidance along two sides left- right-oriented isosceles triangles. had to walk without assistance the inferential bases triangles back starting point. influence variables triangular trajectory—the side (2, 3 4 m) angle between (30–150°)—on accuracy investigated. Changes movement trajectory retained configuration lead an alteration linear but not angular estimation inferred route. equidistant trajectories result both estimations Estimations routes following passive transportation those walking showed similar degrees accuracy. When regarded as geometrical sum subjective displacements, backward paths could be predicted. results obtained show that vestibular cue can only provide gross orientation when moving complex horizontal plane; proprioceptive does improve adequately.