| http://www.w3.org/ns/prov#value | - At age 43, sight in her right eye was partially restored by cataract removal.Each subject listened through headphones to several types of sounds including speech, frequency sweeps (simple tones whose frequency changes), and sounds that appeared to be moving horizontally from one side of the head to the other (the illusion was created by increasing the volume or timing of sounds delivered to eith
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