Peris-Yague Alba, Frank Darya, Hellerstedt Robin, Strange Bryan A
Laboratory for Clinical Neuroscience, Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, IdISSC, Madrid, Spain.
PhD Program in Neuroscience, Universidad Autonóma de Madrid-Cajal Institute, Madrid 28029, Spain.
R Soc Open Sci. 2024 Jun 12;11(6):230926. doi: 10.1098/rsos.230926. eCollection 2024 Jun.
As we navigate our day-to-day lives, we regularly adapt our behaviour according to what we predict may happen next in a given context. When an unexpected event occurs, our predictions about the world are disrupted and must be updated. Unexpected, isolated events, particularly with high emotionality, are also better recalled. In the present work, we investigated how oddballs affect recall dynamics. Seventy young, healthy participants encoded word lists containing either emotional or perceptual oddballs at varying stimulus onset asynchronies followed by free recall. It is well established that after recalling an item, we have a higher probability of recalling items encoded nearby, particularly those that were encoded after the item was recalled, a phenomenon known as forward contiguity of recall. We tested how novelty (oddballs versus control words) modulated forward contiguity as a function of salience type (emotional versus perceptual). The present results provide empirical evidence of forward contiguity modulation selectively by emotional salience and suggest that recall patterns after presenting emotional and perceptual oddballs are mediated by different mechanisms.
在我们的日常生活中，我们会根据对给定情境中接下来可能发生的事情的预测来定期调整自己的行为。当意外事件发生时，我们对世界的预测就会被打乱，必须进行更新。意外的、孤立的事件，尤其是具有高度情感性的事件，也更容易被回忆起来。在本研究中，我们调查了异常刺激如何影响回忆动态。70名年轻健康的参与者对包含情感或感知异常刺激的单词列表进行编码，这些异常刺激具有不同的刺激起始异步性，随后进行自由回忆。众所周知，在回忆一个项目后，我们更有可能回忆起在其附近编码的项目，尤其是那些在该项目被回忆之后编码的项目，这一现象被称为回忆的向前连续性。我们测试了新颖性（异常刺激与对照词）如何根据显著性类型（情感与感知）调节向前连续性。目前的结果提供了情感显著性对向前连续性进行选择性调节的实证证据，并表明呈现情感和感知异常刺激后的回忆模式是由不同机制介导的。
