DEAF HEAR RADIO

Radio Record, Volume I, Issue 26, 13 January 1928, Page 14

DEAF HEAR RADIO

BONES TRANSMIT SOUND. ‘The seat of hearing is in the brain, and conection between this and the middle ear-which in a radio system might represent the pick-up. wires or aerial-is made by the nerve of hearimg. In the normal person sound is transmitted to the nerve of hearing through air conduction via the eardrum. But in the deaf, where the passage to the drlum membrane has been obstructed or the drum has for other reason been rendered usefess, sound is transmitted through bone conduction via the skull bones. Dr. Curtis H. Muncie, a noted American ear specialist, says that this latter is just what happens when deaf people who cannot hear ordinary spokel sounds can leard quite well through radio headphones. The caps, pressed tightly against the ear structure, transmit the sounds directly to the nerve of hearing through the bones of the head. ,