Recognition Potential is an electrophysiological response of the brain that is sensitive to semantic aspects of stimuli. According to its peak values (about 250ms), Recognition Potential appears as a good candidate to reflect lexical selection processes. Consequently, Recognition Potential might be sensitive to contextual information during reading a sentence. In present study, the standard procedures to improve the visibility of Recognition Potential (Rapid Stream Stimulation paradigm) were used in a task in which sentence context was crucial. A parieto-occipital Recognition Potential was observed to peak about 264ms after stimulus onset, followed by a centro-parietal N400 peaking at about 450ms. Recognition Potential was affected by contextual information though, contrary to N400, presenting larger amplitude to contextually congruous words. These results support the assumption that Recognition Potential may reflect lexical selection processes, representing also evidence of context effects on ERP around 250ms after stimulus onset during sentence reading.

中文翻译：

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句子上下文对阅读的早期影响的电生理证据

识别电位是大脑对刺激的语义方面敏感的电生理反应。根据其峰值（约 250ms），Recognition Potential 似乎是反映词汇选择过程的一个很好的候选者。因此，在阅读句子时，识别潜力可能对上下文信息敏感。在本研究中，在句子上下文至关重要的任务中使用了提高识别潜力（快速流刺激范式）可见性的标准程序。观察到顶枕叶识别电位在刺激开始后约 264 毫秒达到峰值，然后是顶枕中心 N400 在约 450 毫秒达到峰值。然而，与 N400 相反，识别潜力受上下文信息的影响，对上下文一致的词呈现更大的幅度。