Higher Brain Function Research
Online ISSN : 1880-6716
Print ISSN : 0285-9513
ISSN-L : 0285-9513
Original article
Auditory agnosia associated with left unilateral lesion
Machiko KezukaMitsuru Kawamura
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JOURNAL FREE ACCESS

1997 Volume 17 Issue 3 Pages 241-248

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Abstract
    We reported a case of a 93 year-old right-handed woman who presented auditory agnosia with mild sensory aphasia following a left temporal infarction. She could not recognize spoken words, environmental sounds and music that had been familiar with her. Though she was able to speak fluently with some literal paraphasia, she could not sing her favorite Japanese folksongs. Her hearing ability was within normal on pure tone audiometry and ABR. MRI disclosed that the lesion was restricted mainly to the first temporal convolusion in the left hemisphere with bilateral periventricular abnormal findings. It is proposed that her auditory agnosia was consequent to the interruption of Wernicke's area and the auditory radiations from both of the right and left hemisphere. It is assumed that this interruption was due to the left temporal infarction. But in addition to this, the bilateral periventricular abnormal findings may play some significant roles on the mechanism of her auditory agnosia.
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© 1997 by Japan Society for Higher Brain Dysfunction ( founded as Japanese Society of Aphasiology in 1977 )
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