Visual phonetic processing localized using speech and nonspeech face gestures in video and point-light displays.
Visual phonetic processing localized using speech and nonspeech face gestures in video and point-light displays.
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DOI：
10.1002/hbm.21139
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发表时间：
2011-10
影响因子：
4.8
通讯作者：
Joshi, Anand
中科院分区：
文献类型：
--
作者：
Bernstein, Lynne E.;Jiang, Jintao;Pantazis, Dimitrios;Lu, Zhong-Lin;Joshi, Anand
关键词：
说话的脸提供了多种类型的信息。为了分离负责整合语言相关视觉语音线索的皮层部位，在3.0T的fMRI扫描期间，语音和非语音面部手势以自然视频和点光显示呈现。听力正常的受试者观察刺激，并观察梭状面区（FFA）、枕叶外侧复合体（V5/MT）和感兴趣区域（ROI）的定位器。FFA、V5/MT在言语刺激时的激活程度显著低于非言语刺激和对照刺激。在组分析中，后上级颞沟和邻近的颞中回对语音的激活明显，与媒体无关。个体分析表明，言语和非言语刺激与相邻但不同的激活相关，言语激活更靠前。我们认为，言语激活区是颞视觉言语区（TVSA），它可以定位与本研究中使用的刺激组合。
The talking face affords multiple types of information. To isolate cortical sites with responsibility for integrating linguistically relevant visual speech cues, speech and non-speech face gestures were presented in natural video and point-light displays during fMRI scanning at 3.0T. Participants with normal hearing viewed the stimuli and also viewed localizers for the fusiform face area (FFA), the lateral occipital complex (LOC), and the visual motion (V5/MT) regions of interest (ROIs). The FFA, the LOC, and V5/MT were significantly less activated for speech relative to non-speech and control stimuli. Distinct activation of the posterior superior temporal sulcus and the adjacent middle temporal gyrus to speech, independent of media, was obtained in group analyses. Individual analyses showed that speech and non-speech stimuli were associated with adjacent but different activations, with the speech activations more anterior. We suggest that the speech activation area is the temporal visual speech area (TVSA), and that it can be localized with the combination of stimuli used in this study.
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