title: Auditory sound agnosia without aphasia following a right temporal lobe lesion.
abstract: A 55-year-old right-handed man showed inability to recognize the meaning of non-verbal sounds without impairment of language comprehension after a cerebrovascular accident. His auditory acuity was intact and no other sign of agnosia, apraxia or aphasia was detectable. His errors on a test of sound recognition were acoustic rather than semantic. Brain CT scan showed a small lesion in the posterior part of the right temporal lobe. This case suggests that auditory sound agnosia without language disorder can ensure a lesion confined to the right hemisphere, and that the deficit is discriminative rather than associative in nature.
authors.affiliation: Department of Neurology, Tohoku University School of Medicine, Sendai, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Fujii
authors.forename: R
authors.initials: R
authors.lastname: Fukatsu
authors.forename: S
authors.initials: S
authors.lastname: Watabe
authors.forename: A
authors.initials: A
authors.lastname: Ohnuma
authors.forename: K
authors.initials: K
authors.lastname: Teramura
authors.forename: I
authors.initials: I
authors.lastname: Kimura
authors.forename: S
authors.initials: S
authors.lastname: Saso
authors.forename: K
authors.initials: K
authors.lastname: Kogure
mesh_terms: D000377:Agnosia / Q000209:etiology* / Q000523:psychology; D001299:Audiometry; D002543:Cerebral Hemorrhage / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008568:Memory; D008875:Middle Aged; D009483:Neuropsychological Tests; D013016:Sound; D013702:Temporal Lobe / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed