College of Education, Shanghai Normal University, Shanghai 200234, China.
College of Education, Shanghai Normal University, Shanghai 200234, China.
Neurosci Lett. 2019 Apr 23;699:1-7. doi: 10.1016/j.neulet.2019.01.028. Epub 2019 Jan 21.
Previous studies have investigated the time course of emotion effects during emotion-word processing, but no consistent pattern has emerged. Notably, most of these studies intermixed emotion-label words (e.g., "happy") with emotion-laden words (e.g., "successful"), although emotion activation differences for these two types of words have been documented. Here, we separately investigated the time course of the emotion effects of emotion-label and emotion-laden words with a lexical decision task. The results showed that emotion-label words and negative emotion-laden words elicited a larger P2 than did neutral words, whereas there was no difference in P2 between positive emotion-laden and neutral words. Furthermore, both emotion-label and emotion-laden words, regardless of their valence, elicited smaller N400 components than did neutral words. These results suggest that the emotion effect of emotion-label words occurs earlier than that of emotion-laden words, but this difference is limited to the positive valence category.
先前的研究调查了情绪词加工过程中的情绪效应的时间进程，但没有出现一致的模式。值得注意的是，这些研究大多将情绪标签词（例如“快乐”）与情绪负荷词（例如“成功”）混合在一起，尽管这两种词的情绪激活差异已有记录。在这里，我们使用词汇判断任务分别研究了情绪标签词和情绪负荷词的情绪效应的时间进程。结果表明，情绪标签词和负性情绪负荷词引起的 P2 比中性词大，而正性情绪负荷词和中性词之间的 P2 没有差异。此外，情绪标签词和情绪负荷词（无论其效价如何）引起的 N400 成分都比中性词小。这些结果表明，情绪标签词的情绪效应比情绪负荷词的情绪效应更早出现，但这种差异仅限于正效价类别。
