Human Brain's 'Bat Sight' Found, Study in PLoS ONE
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.