SONAR SYSTEM OF THE BLIND: SIZE DISCRIMINATION.
Measurements were made of the ability of four blind subjects to use echoes to discriminate between objects of different sizes placed in front of them. Threshold estimates indicate that objects with area ratios as low as 1.07/1 could be discriminated.
D001766:Blindness; D006309:Hearing; D006801:Humans; D012858:Size Perception; D013016:Sound
BLINDNESS; HEARING; SIZE PERCEPTION