【摘要】 目的 :分析纯词聋的神经心理学特征及探讨可能的机制。方法 :对一例纯词聋病例的神经心理学检查结果及影像学特征进行分析。结果 :神经心理学检查主要特征为对词语声的听辨认及复述障碍 ,而对非词语声 (音乐声、环境声等 )的听辨认基本正常 ;头颅CT示单一的右侧颞顶叶出血灶累及皮质下及皮质。结论 :对词语声和非词语声的辨别分离是纯词聋的一个突出的特征 ;纯词聋的可能机制为次级感觉皮质区即Wernicke区被孤立所致 ,本例的机制可能为右颞叶具有相当于Wernicke区的功能而被孤立所致或右侧半球听觉区的信息不能经胼胝体传递到左侧Wernicke区所致。更多还原

【Abstract】 Objective:To study the neuropsychological features and explore possible mechanisms in pure word deafness.Methods:A case of a 55 year-old right-handed woman was analysed,who presented with a long lasting pure word deafness following subcortical and cortical hemorrhage in right temporal and parietal lobe.Results:There was no sign of aphasia. The auditory deficit was sepecific for language, while recognition of music and environmental sounds was normal. CT examinations showed that the lesion was due to right cerebral hemisphere hemorrhage, mainly the white matter of temporal and parietal lobe. Conclusion:It is proposed that pure word deafness was consequent to the isolation of Wernicke’s area from incoming auditory information due to the interruption both of the association fibers from the right auditory area traveling across the corpus callosum and of the left auditory radiations.更多还原