The most-anticipated Tamil action thriller movie "Thaandavam" starring Vikram, Anushka Shetty and British beauty Amy Jackson revolves around a blind-man who uses human echolocation technique to seek revenge.
His character in the movie is said to be inspired by Daniel Kish, an American-based human echolocation expert.
Human echolocation is a state of the art, where humans are able to recognize the objects/people in a surrounding and sense their movement towards them to spontaneously respond by actively generating sounds.
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.
Historically, empirical research on human echolocation focused on people who were blind (Ammons, Worchel, & Dallenbach, 1953; Kellogg, 1962; McCarty & Worchel, 1954; Rice & Feinstein, 1965; Supa, Cotzin, & Dallenbach, 1944), while the extent to which echolocation abilities are accessible to sighted persons remains a largely open question.
No study of which we are aware specifically tested echolocation experts, who presumably represent the height of human echolocation performance.
Because human echolocation is often discussed as an auditory perceptual aid in navigation and object perception, it is appropriate to investigate quantitatively detection thresholds and the limits of spatial acuity that human echolocation affords its practitioners.
We have characterized the spatial resolution of novice and expert human echolocation using size discrimination and novel, relative spatial localization tasks.