The Acuity of Echolocation: Spatial Resolution in Sighted Persons Compared to the Performance of an Expert who is Blind

Compared with the echolocation performance of an expert who is blind, sighted novices rapidly learned size and position discrimination with surprising precision. We used a novel task to characterize the population distribution of echolocation skills in sighted persons and report the highest-known human echolocation acuity in the expert who is blind.