Jeunehomme Olivier, D'Argembeau Arnaud
Psychology and Neuroscience of Cognition Research Unit, University of Liège, Liège, Belgium.
Q J Exp Psychol (Hove). 2019 Apr;72(4):930-942. doi: 10.1177/1747021818773082. Epub 2018 May 7.
Recent studies suggest that the continuous flow of information that constitutes daily life events is temporally compressed in episodic memory, yet the characteristics and determinants of this compression mechanism remain unclear. This study examined this question using an experimental paradigm incorporating wearable camera technology. Participants experienced a series of real-life events and were later asked to mentally replay various event sequences that were cued by pictures taken during the original events. Estimates of temporal compression (the ratio of the time needed to mentally re-experience an event to the actual event duration) showed that events were replayed, on average, about eight times faster than the original experiences. This compression mechanism seemed to operate by representing events as a succession of moments or slices of prior experience separated by temporal discontinuities. Importantly, however, rates of temporal compression were not constant and were lower for events involving goal-directed actions. The results also showed that the perceived duration of events increased with the density of recalled moments of prior experience. Taken together, these data extend our understanding of the mechanisms underlying the temporal compression and perceived duration of real-life events in episodic memory.
最近的研究表明，构成日常生活事件的信息流在情景记忆中会在时间上被压缩，然而这种压缩机制的特征和决定因素仍不清楚。本研究使用结合了可穿戴相机技术的实验范式来探究这个问题。参与者经历了一系列现实生活事件，随后被要求在脑海中重现由原始事件期间拍摄的图片所提示的各种事件序列。时间压缩的估计值（即脑海中重新体验一个事件所需的时间与实际事件持续时间的比率）表明，事件的重现速度平均比原始体验快约八倍。这种压缩机制似乎是通过将事件表示为一系列由时间间断分隔的先前经验的时刻或片段来运作的。然而，重要的是，时间压缩率并非恒定不变，对于涉及目标导向行动的事件，压缩率较低。结果还表明，事件的感知持续时间随着先前经验回忆时刻的密度增加而增加。综上所述，这些数据扩展了我们对情景记忆中现实生活事件的时间压缩和感知持续时间背后机制的理解。
