A Case of Generalized Auditory Agnosia with Unilateral Subcortical Brain Lesion.
10.5535/arm.2012.36.6.866
- Author:
Hyee SUH
1
;
Yong Il SHIN
;
Soo Yeon KIM
;
Sook Hee KIM
;
Jae Hyeok CHANG
;
Yong Beom SHIN
;
Hyun Yoon KO
Author Information
1. Department of Rehabilitation Medicine, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 626-770, Korea. rmshin01@gmail.com
- Publication Type:Case Report
- Keywords:
Auditory agnosia;
Unilateral subcortical lesion
- MeSH:
Acoustics;
Agnosia;
Audiometry;
Brain;
Brain Stem;
Evoked Potentials;
Hearing;
Humans;
Male;
Music;
Speech Perception;
Temporal Lobe;
Writing
- From:Annals of Rehabilitation Medicine
2012;36(6):866-870
- CountryRepublic of Korea
- Language:English
-
Abstract:
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.
