A. Barret. A case of verbal deafness; autopsy. A case of pure mord-deafness with autopsy. journal of nervous and mental diseas, 1910. № 2

A 67-year-old patient has suffered from tabes dorsalis for several years. After an attack, the exact nature of which remained unclear, he developed phenomena of verbal deafness; a few days later he was admitted to the hospital. A detailed study, carried out a year after admission, established the following: the patient pays attention to the various sounds that he perceives, but does not understand the meaning of the words and is completely unable to assess the nature and meaning of various sounds. He is not able to repeat the word said by another person. The ability of arbitrary speech is preserved, and only occasionally does the patient make paraphasic errors in pronunciation. He reads printed materials easily and freely, understands questions put to him in writing, and gives correct answers to them. Arbitrary writing does not present any disturbances.