UBC Theses and Dissertations
The use of echolocation as an aid in mobility for blind persons Boehm, Richard George
This investigation studied the degree of spatial data that could be perceived by subjects, through the use of echolocation, who were led through an indoor environment and verbally reported their spatial perceptions. The experimental group was composed of 5 totally blind and severely visually impaired subjects and the control group had 11 sighted subjects who were under blindfold. Each subject was led through the space, using the sighted guide technique, and the subject would click a clicker and attempt to perceive spatial data through echolocation. The space had 25 preselected reference points in it, and the experimental subjects averaged 20.2 correct responses and the control subjects 7.727 for an overall mean of 11.3125.