Hugdahl K, Wester K, Asbjørnsen A
Department of Somatic Psychology, University of Bergen, Haukeland Hospital, Norway.
Int J Neurosci. 1990 Sep;54(1-2):139-46. doi: 10.3109/00207459008986629.
Dichotic listening (DL) performance to consonant-vowel (CV) syllables is reported in an aphasic right-handed male patient. The patient suffered initially from a complete expressive aphasia after an intracerebral hemorrhage caused by the rupture of an arteriovenous malformation (AVM) underlying Broca's area. The patient was tested three times with DL; one week after the hemorrhage, five weeks after, and after at about 6 months. At the first test he could not speak, but understood well. At the second test he uttered one-syllable words, and could answer "yes" and "no" to questions. At the third test he could speak whole sentences, although slow and "stutter-like." Dichotic listening performance showed an almost perfect match with speech recovery. At the first test he showed a left ear advantage which changed to no ear advantage at the second test, and to a right ear advantage at the third test. The overall performance was markedly reduced at the first test, but improved at the following test. It is concluded that dichotic listening may be a valid complement to traditional language assessment procedures after unilateral brain lesions.
本文报告了一名失语的右利手男性患者对辅音-元音（CV）音节的双耳分听（DL）表现。该患者最初因位于布洛卡区下方的动静脉畸形（AVM）破裂导致脑出血，出现完全性表达性失语。对该患者进行了三次双耳分听测试，分别在出血后一周、五周以及大约6个月后。第一次测试时，他无法说话，但理解能力良好。第二次测试时，他能说出单音节词，并能对问题回答“是”或“否”。第三次测试时，他能够说出完整的句子，尽管语速缓慢且类似“口吃”。双耳分听表现与言语恢复情况几乎完全匹配。第一次测试时他表现出左耳优势，第二次测试时变为无耳优势，第三次测试时变为右耳优势。第一次测试时总体表现明显降低，但在随后的测试中有所改善。结论是，双耳分听可能是单侧脑损伤后传统语言评估程序的有效补充。
