Derouet Joffrey, Doyère Valérie, Droit-Volet Sylvie
CNRS, UMR 6024, Laboratoire de Psychologie Sociale et Cognitive, Université Clermont Auvergne, Clermont-Ferrand, France.
CNRS, UMR 9197, Institut des Neurosciences Paris-Saclay, Université Paris-Sud - Université Paris-Saclay, Orsay, France.
Front Psychol. 2019 Apr 3;10:745. doi: 10.3389/fpsyg.2019.00745. eCollection 2019.
This study examined the effect of an interference task on the consolidation of duration in long-term memory. In a temporal generalization task, the participants performed a learning phase with a reference duration that either was, or was not, followed 30 min later by a 15-min interference task. They were then given a memory test, 24 h later. Using different participant groups, several reference durations were examined, from several hundred milliseconds (600 ms) to several seconds (2.5, 4, and 8 s). The results showed that the scalar timing property (i.e., precision proportional to judged duration) was preserved despite the interference task given during the memory consolidation process. However, the interference task increased the variability of time judgment and tended to produce a lengthening effect in all reference duration conditions. The modeling of individual data with parameters derived from scalar expectancy theory suggests that disrupting the memory consolidation of learned reference durations introduces noise in their representation in memory, with time being specifically distorted toward a lengthened duration.
本研究考察了一项干扰任务对长期记忆中时长巩固的影响。在一项时间泛化任务中，参与者进行一个学习阶段，其中有一个参考时长，在30分钟后，该参考时长要么紧接着有一个15分钟的干扰任务，要么没有。然后，在24小时后对他们进行记忆测试。使用不同的参与者组，研究了从几百毫秒（600毫秒）到几秒（2.5秒、4秒和8秒）的几个参考时长。结果表明，尽管在记忆巩固过程中进行了干扰任务，但标量计时特性（即精度与判断时长成正比）仍然得以保留。然而，干扰任务增加了时间判断的变异性，并在所有参考时长条件下都倾向于产生延长效应。用从标量期望理论推导出来的参数对个体数据进行建模表明，干扰已学参考时长的记忆巩固会在记忆表征中引入噪声，时间会特别朝着延长的时长发生扭曲。
