Tag Archive: echolocation

Teach yourself to echolocate

Photo of Daniel Kish by PopTech licensed under CC BY-SA 2.0

Jessica Leigh Hester, Atlas Obscura, writes about how we can learn to navigate with sound. Hester introduces us to Daniel Kish, who, after losing his vision as an infant, taught himself to move around with echolocation. You may be aware that bats use echolocation for navigation, and, apparently, so does Kish. Hester writes that he “uses his mouth to produce a series of short, crisp clicking sounds, and then listens to how those sounds bounce off the surrounding landscape.” By employing echolocation, Kish can then map out his environment.

Want to give it a try? Kish teaches echolocation, mostly to blind students, and he gives Hester an introductory lesson on how to get in tune with your sonic environment. Click the link for Kish’s primer.

Humans can use sound to estimate sizes of enclosed spaces

ScienceDaily writes about fascinating research in echolocation in “Echolocation: Sizing up spaces by ear.” The article tells us about research conducted at Ludwig-Maximilians-Universitaet (LMU), and led by Lutz Wiegrebe, a professor in the Department of Biology at LMU, that has shown that sighted people can be taught to estimate room size with the help of self-generated clicks. The research also found differences in how reflected sound affected the visual cortex of sighted versus blind participants.  Namely, with a “congenitally blind participant…reception of the reflected sounds resulted in the activation of the visual cortex.” “That the primary visual cortex can execute auditory tasks is a remarkable testimony to the plasticity of the human brain,” says Wiegrebe. Interestingly, sighted subjects “exhibited only a relatively weak activation of the visual cortex during the echolocation task.”  Click the link above to read the entire article. It’s a very interesting read.

Link via Cheryl Tipp.