当左半球大脑中风对语言,实践和视觉注意力来说是正确的:一个案例报告
Elizabeth H T Chang1, Peter E Turkeltaub1,2, Anna Seydell-Greenwald1
1Center for Brain Plasticity and Recovery, Georgetown University Medical Center.
概括
在主导左半球 (LH) 的罕见中风病例中,语言和认知功能得到保存,这表明不典型的右半球 (RH) 主导. 这一发现挑战了关于大脑侧向化的传统观点.
科学领域:
- 神经科学是一个神经科学.
- 认知神经学 认知神经学
- 神经成像是一种神经成像.
背景情况:
- 大型中风通常会导致基于半球主导的显著功能缺陷.
- 认知功能的非典型横向化是一种已知的现象,但在如此广泛的损伤中很少有记录.
研究的目的:
- 报告一个独特的左半球大脑中风病例,语言,实践和视觉空间认知得以保存.
- 为了研究与完整的右半球 (RH) 同时功能横向化的潜力.
主要方法:
- 一名53岁的女性有LH MCA中风病史,接受了全面的行为评估.
- 功能磁共振成像 (fMRI) 用于评估认知任务期间的大脑活动.
主要成果:
- 尽管LH损伤很大,但患者保持了完整的语言 (W-AB AQ=99.2) 和实践.
- fMRI揭示了右半球对语言的优势,尽管右半球偏眼,但视觉空间认知和注意力仍然存在.
结论:
- 这个案例表明,语言,实践和视觉空间功能可以独立地向RH侧面化.
- "交叉非失语症"的现象支持灵活和独立的功能横向化,这与理解中风后缺陷有关.
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