Department of Psychology, New York University.
Institut Pasteur, Universite Paris Cite, Inserm, Institut de l'Audition.
J Exp Psychol Learn Mem Cogn. 2023 Sep;49(9):1494-1504. doi: 10.1037/xlm0001150. Epub 2022 Jun 16.
While our perceptual experience seems to unfold continuously over time, episodic memory preserves distinct events for storage and recollection. Previous work shows that stability in encoding context serves to temporally bind individual items into sequential composite events. This phenomenon has been almost exclusively studied using visual and spatial memory paradigms. Here we adapt these paradigms to test the role of speaker regularity for event segmentation of complex auditory information. The results of our auditory paradigm replicate the findings in other sensory modalities-finding greater within-event temporal memory for items within speaker-bound events and greater source memory for items at speaker or event transitions. The task we use significantly extends the ecological validity of past paradigms by allowing participants to encode the stimuli without any suggestions on the part of the experimenter. This unique property of our design reveals that, while memory performance is strongly dependent on self-reported mnemonic strategy, behavioral effects associated with event segmentation are robust to changes in mnemonic strategy. Finally, we consider the effect of serial position on segmentation effects during encoding and present a modeling approach to estimate the independent contribution of event segmentation. These findings provide several lines of evidence suggesting that contextual stability in perceptual features drives segmentation during word listening and supports a modality-independent role for mechanisms involved in event segmentation. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
虽然我们的知觉体验似乎在时间上持续展开，但情景记忆将不同的事件保存下来以备存储和回忆。先前的工作表明，编码上下文的稳定性有助于将单个项目绑定到时间上连续的组合事件中。这种现象几乎只在使用视觉和空间记忆范式的情况下进行了研究。在这里，我们改编了这些范式来测试说话人规律性在复杂听觉信息的事件分割中的作用。我们的听觉范式的结果复制了其他感觉模态中的发现——在说话人绑定的事件内，项目之间的内事件时间记忆更大，在说话人或事件转换处，项目的源记忆更大。我们使用的任务通过允许参与者在没有实验者任何提示的情况下对刺激进行编码，极大地提高了过去范式的生态有效性。我们设计的这个独特特性表明，尽管记忆性能强烈依赖于自我报告的记忆策略，但与事件分割相关的行为效应不受记忆策略变化的影响。最后，我们考虑了在编码过程中序列位置对分割效应的影响，并提出了一种建模方法来估计事件分割的独立贡献。这些发现提供了几条证据，表明感知特征中的上下文稳定性在单词听力过程中驱动了分割，并支持了参与事件分割的机制的独立于模态的作用。（PsycInfo 数据库记录（c）2023 APA，保留所有权利）。
