Reading fluent speech from talking faces: Typical brain networks and individual differences
Reading fluent speech from talking faces: Typical brain networks and individual differences
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DOI：
10.1162/0898929054021175
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发表时间：
2005-06-01
影响因子：
3.2
通讯作者：
Summerfield, AQ
中科院分区：
文献类型：
--
作者：
Hall, DA;Fussell, C;Summerfield, AQ
听者能够通过观察说话者的脸来提取重要的语言信息——这个过程被称为“读言”。先前对言语阅读的研究呈现出小而封闭的简单词汇集，其结果表明，视觉言语处理涉及颞叶、额叶和顶叶等大脑区域的广泛网络，可能是接受性语言系统多个阶段的基础。本研究通过呈现自然说出的句子，进一步探索了这一网络，这些句子利用了视觉语音处理的更丰富的复杂性。四种不同的基线（空白屏幕、静态面孔、非语言面部转向和听觉语音）使我们能够确定涉及语音阅读的神经处理层次，并测试视觉输入可靠地访问听觉皮层中基于声音的表征的说法。与被动观看空白屏幕相比，静态面孔条件诱发了双侧梭状回和小脑边界以及内侧额上回和左中央前回的激活
Listeners are able to extract important linguistic information by viewing the talker's face-a process known as "speechreading." Previous studies of speechreading present small closed sets of simple words and their results indicate that visual speech processing engages a wide network of brain regions in the temporal, frontal, and parietal lobes that are likely to underlie multiple stages of the receptive language system. The present study further explored this network in a large group of subjects by presenting naturally spoken sentences which tap the richer complexities of visual speech processing. Four different baselines (blank screen, static face, nonlinguistic facial gurning, and auditory speech) enabled us to determine the hierarchy of neural processing involved in speechreading and to test the claim that visual input reliably accesses sound-based representations in the auditory cortex. In contrast to passively viewing a blank screen, the static-face condition evoked activation bilaterally across the border of the fusiform gyrus and cerebellum, and in the medial superior frontal gyrus and left precentral gyrus (p