A family-tree of deaf mutes and its audiograms

Abstract

In this family, the parents had normal hearing, but their two children were deaf and mute and two deaf mutes were discoved in the father-side as well as in the mother-side relatives. The audiograms of these children could not be taken, because they were too young, but the audiograms of these deaf mutes in their relatives were closely resembled each other. © 1957, The Oto-Rhino-Laryngological Society of Japan, Inc. All rights reserved.