ELISABETH SCHNEIDER / LOOK AT SCIENCES / SCIENCE PHOTO LIBRARY ELISABETH SCHNEIDER / LOOK AT SCIENCES / SCIENCE PHOTO LIBRARY
Tongue visual aid. Blind woman testing a device that allows her to identify objects using an electrode placed on her tongue. A camera records an image of the object and translates it into an electrical signal. This signal is sent to an electrode in the person's mouth and can be used to help the participant determine what the object is.
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