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KMID : 0361420120360060866
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Journal of Korean Academy of Rehabilitation Medicine
2012 Volume.36 No. 6 p.866 ~ p.870
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A Case of Generalized Auditory Agnosia with Unilateral Subcortical Brain Lesion
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Suh Hyee
Shin Yong-Il
Kim Soo-Yeon
Kim Sook-Hee
Chang Jae-Hyeok
Shin Yong-Beom
Ko Hyun-Yoon
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Abstract
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The mechanisms and functional anatomy underlying the early stages of speech perception are still not well understood. Auditory agnosia is a deficit of auditory object processing defined as a disability to recognize spoken languages and/or nonverbal environmental sounds and music despite adequate hearing while spontaneous speech, reading and writing are preserved. Usually, either the bilateral or unilateral temporal lobe, especially the transverse gyral lesions, are responsible for auditory agnosia. Subcortical lesions without cortical damage rarely causes auditory agnosia. We present a 73-year-old right-handed male with generalized auditory agnosia caused by a unilateral subcortical lesion. He was not able to repeat or dictate but to perform fluent and comprehensible speech. He could understand and read written words and phrases. His auditory brainstem evoked potential and audiometry were intact. This case suggested that the subcortical lesion involving unilateral acoustic radiation could cause generalized auditory agnosia.
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KEYWORD
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Auditory agnosia, Unilateral subcortical lesion
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