May 31, 2011

Human brain has it’s own form of ‘bat sight’

The part of the brain used by people who can “see like a bat” has been identified by researchers in Canada. Some blind people have learned to echolocate by making clicking noises and listening to the returning echoes.

A study of two such people, published in PLoS ONE, showed a part of the brain usually associated with sight was activated when listening to echoes.

Action for Blind People said further research could improve the way the technique is taught. Bats and dolphins bounce sound waves off their surroundings and by listening to the echoes can “see” the world around them.

Some blind humans have also trained themselves to do this, allowing them to explore cities, cycle and play sports.

The study looked at only two people so cannot say for certain what happens in the brains of all people who learn the technique, but the study concludes: “EB and LB use echolocation in a way that seems uncannily similar to vision.”

Full article at BBC

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