The problem of aphasia, which was first described by Broca32 in 1870, has been studied extensively during the intervening years. In particular, disturbances in auditory comprehension, with reference to receptive aphasia, have been minutely investigated. Likewise, a vast amount of literature is available pertaining to the expressive and mixed forms of the disorder.16,17,21Aphasia has been defined as a symbolic language impairment resulting from an organic disturbance of cortical tissue.32 Since the overt manifestations of the cortical insult are primarily observable as symbolic disruptions in either expressive or receptive language patterns, or both, the question arises as to whether or not a concomitant reduction in auditory sensitivity may accompany the condition.Another form of cerebral injury, not specifically associated with symbolic language disturbance, is encountered in cerebral palsy. Cerebral palsy may be defined as a neuromuscular and sensory handicap, caused by damaged or absent brain structures.
TERR MA, GOETZINGER CP, ROUSEY CL. A Study of Hearing Acuity in Adult Aphasic and Cerebral Palsied Subjects. AMA Arch Otolaryngol. 1958;67(4):447–455. doi:10.1001/archotol.1958.00730010459012
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