UFR Lettres, Sciences de l'Homme et des Sociétés, University Paris 13 Campus de Villetaneuse, Villetaneuse, France.
Brain Topogr. 2012 Jan;25(1):64-72. doi: 10.1007/s10548-011-0200-3. Epub 2011 Aug 24.
Behavioral and neuropsychological studies on written production suggested that some cognitive processes are common with spoken production. In this study, we attempted to specify the time course of common processes between the two modalities with event-related brain potentials (ERPs). High density EEG was recorded on twenty two healthy participants during a handwritten and an oral picture naming task on the same 120 stimuli. Waveform analyses and topographical pattern analyses were combined on stimulus- and response-aligned ERPs in order to cover the whole word encoding processing. Similar electrophysiological correlates between writing and speaking appeared until about 260 ms. According to previous estimations of the time course of spoken production, the time period of identical electrophysiological activity corresponds to visual (0-150 ms) semantic (150-190 ms) and lexical-semantic (190-275 ms) processes. Then, spoken and handwritten picture naming starts diverging and display different and modality specific topographical configurations from around 260 ms, i.e., at the beginning of the time-window associated to the encoding of the surface phonological form in spoken production. These results suggested shared conceptual and lexical-semantic processes between speaking and writing and different neurophysiological activity during word-form (phonological or orthographic) encoding.
行为和神经心理学研究表明，书面和口语产生涉及一些共同的认知过程。在本研究中，我们试图利用事件相关电位（ERP）来明确这两种模态之间的共同过程的时间进程。在相同的 120 个刺激上，对 22 名健康参与者进行了手写和口头图片命名任务的高密度 EEG 记录。为了涵盖整个单词编码处理过程，我们将刺激和反应对齐的 ERP 进行了波形分析和拓扑模式分析。直到大约 260ms 左右，写作和说话之间出现了类似的电生理相关性。根据口语产生时间进程的先前估计，相同的电生理活动的时间段对应于视觉（0-150ms）语义（150-190ms）和词汇语义（190-275ms）过程。然后，大约从 260ms 开始，口语和手写图片命名开始发散，并显示出不同的、特定于模态的拓扑结构，即开始与口语产生中表面语音形式编码相关的时间窗口。这些结果表明，口语和写作之间存在共同的概念和词汇语义过程，而在单词形式（语音或拼写）编码过程中则存在不同的神经生理活动。
