视觉语音信息对脑卒中后失语症的词理解的好处
Anna Krason1, Gabriella Vigliocco1, Marja-Liisa Mailend2
1Experimental Psychology, University College London, UK; Moss Rehabilitation Research Institute, Elkins Park, PA, USA.
概括
视觉语音线索有助于单词理解,但这种益处在患有失言症 (PWA) 的人群中减少. 脑损伤的位置在前--状区域与这种减少的视听效益相关.
科学领域:
- 神经科学是一个神经科学.
- 语音和听力科学 语言和听力科学
- 语言学的语言学.
背景情况:
- 失言症会损害语言理解,通常会影响口语理解.
- 面对面的沟通使用视觉线索 (嘴巴,面部运动) 与听觉语音一起.
- 这些视觉语音线索对于失语者理解的好处在很大程度上仍未得到研究.
研究的目的:
- 研究视觉语音信息对阿法西亚 (PWA) 患者的单词理解的益处.
- 确定与PWA视觉语言的任何观察到的益处相关的神经解剖基质.
主要方法:
- 对36个PWA和13个神经类型对照进行了图片词验证任务.
- 刺激包括视听 (AV) 和仅听觉 (AO) 条件,有清晰和退化的音频.
- 多变量病变症状映射用于分析与AV益相关的大脑区域.
主要成果:
- 视觉语音信息为神经类型参与者提供了比PWA更大的好处.
- 当听觉语音信号被降低时,视觉语言的好处在两组中都更加明显.
- 上卷状,岛状,体感皮层和下额头卷状的损伤与在退化条件下减少AV益处有关.
结论:
- 视觉语音信息对单词理解有好处,特别是当听觉信号被降低时.
- 这种好处在与神经类型个体相比,在失言症患者中不那么明显.
- 特定的前--脑区域对于利用视听语音信息进行理解至关重要.
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