Photo: Soldiers May Get "Sight" on Tips of Their Tongues



A researcher at the Florida Institute for Human and Machine Cognition in Pensacola checks to make sure that currents are running through a sensory-substitution device on April 12, 2006.

Military researchers say such technology—which allows users to "see" via electrical signals sent through the tongue to the brain—could give underwater soldiers extrasensory powers similar to those of snakes and fish.

Photograph courtesy AP Photo/Mari Darr~Welch


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