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KMID : 0361020210640040277
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Korean Journal of Otolaryngology - Head and Neck Surgery
2021 Volume.64 No. 4 p.277 ~ p.284
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Verbal Auditory Agnosia Developed after Unilateral Temporal Lobe Infarction
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Jeon Jeong-Bae
Jeon Min-Chae
Lee Dong-Hee
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Abstract
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Stroke results in sudden loss of function related to its damaged portion. When this occurs intemporal lobe, the function of hearing and listening may be affected, although receptive languageprocessing is affected while hearing perception is relatively spared. This is called as“central deafness.” It has been known that hearing ability is seldom impaired in the case oftemporal lobe stroke except in the case of bilateral lesions. However, we experienced a72-year-old, right-handed woman who presented with both sudden hearing difficulty due tounilateral temporal lobe infarctions after suddenly not being able to respond to any verbalquestions except environmental sounds. Pure-tone audiometry showed both flat sensorineuralhearing loss of mild degree in both ears but she could not understand any verbal sound. BrainMRI demonstrated extensive ischemic infarcts in the left temporal lobes involving primaryauditory cortex. She was diagnosed as verbal auditory agnosia and has received speech-languagetherapy.
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KEYWORD
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Auditory agnosia, Cerebral infarction, Primary auditory cortex, Sudden hearing loss
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