Cortical deafness: a longitudinal study
| Autor: | L J, Hood, C I, Berlin, P, Allen |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Adult
Auditory Cortex Language Disorders Speech Reception Threshold Test Deafness Magnetic Resonance Imaging Electric Stimulation Reflex Acoustic Audiometry Evoked Response Cochlea Radiography Sign Language Evoked Potentials Auditory Brain Stem Language Therapy Speech Perception Audiometry Pure-Tone Humans Female Longitudinal Studies Age of Onset Audiometry Speech |
| Zdroj: | Journal of the American Academy of Audiology. 5(5) |
| ISSN: | 1050-0545 |
| Popis: | We have studied a patient with MRI-confirmed bilateral absence of considerable portions of her temporal lobes resulting in cortical deafness. Although physiologic measures demonstrate normal peripheral hearing sensitivity, this patient's speech has the inflection and prosodic characteristics associated with profound peripheral hearing loss, and she is unable to understand spoken communication. Behaviorally obtained pure-tone thresholds taken over nearly 20 years range from normal to moderate hearing loss with normal middle ear muscle reflexes and normal ABRs; however, we consistently found abnormal middle latency and cortical evoked potentials. Because of her total inability to communicate auditorily, this patient was ultimately taught American Sign Language and educated at the Louisiana School for the Deaf. This rare case highlights the importance of using multiple audiologic measures sensitive to abnormalities at various levels of the auditory system. |
| Databáze: | OpenAIRE |
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