摘要
目的 探讨纯失读症与大脑半球枕叶病变的关系。方法 分析 3例左枕叶梗死和 2例右枕叶梗死患者的语言功能、详细阅读及视空间、忽视功能检查和影像学检查资料。结果 3例左枕叶梗死患者中 ,2例表现失读不伴失写 ,1例表现失读伴失写 ,阅读检查各自有其特点 ,并与病变的部位和范围密切相关 ;2例右枕叶梗死患者 ,语言功能无异常 ,表现视空间功能障碍。结论 大脑半球的左右枕叶分别对文字阅读和视空间结构功能有明显的侧向分化特点 。
Objective To investigate the correlation between pure alexia and occipital impairment in cerebral hemisphere.Methods 3 patients with left occipital infarction and 2 patients with right occipital infarction were analysed on their language function, reading abilities, the examination of neglect function and the results of MRI or CT.Results Among 3 patients with left occipital infarction, 2 patients showed alexia without agraphia. 1 patient showed alexia with agraphia. 3 cases showed the different peculiarities on the examination of reading abilities. The manifestations of reading impairment was relating to the location and the limitation of the occipital lesion. 2 patients with right occipital infarction showed impairment of visual spatial perception without disorder on language.Conclusion There was a remarkable lateral differentiation in cerebral hemisphere dominance in the occipital lobe. The left and right occipital lobes in cerebral hemisphere linked with reading and visual spatial perception separately. For the different stimulation from visual perception and language, there was reading center or reading system of relative differentiation in occipital cortex.
出处
《临床神经病学杂志》
CAS
2002年第5期280-282,共3页
Journal of Clinical Neurology
关键词
纯失读
空间知觉
视知觉
大脑半球机能
Pure alexia Space perception Visual perception Cerebral hemisphere function
