Correlation between vividness of visual imagery and echolocation ability in sighted, echo-naïve people.

The ability of humans to echolocate has been recognized since the 1940s. Little is known about what determines individual differences in echolocation ability, however. Although hearing ability has been suggested as an important factor in blind people and sighted-trained echolocators, there is evidence to suggest that this may not be the case for sighted novices.