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The lifespan of time intervals in reference memory.
Pierre-Luc Gamache1, Simon Grondin
1Ecole de Psychologie, Université Laval, 2325 rue des Bibliothèques, Québec, QC G1V 0A6, Canada. pierre-luc.gamache@psy.ulaval.ca
Perception
|February 15, 2011
Summary
Memory influences our perception of time. Our experiments reveal that previous temporal experiences distort current time judgments, supporting the
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human Perception
Background:
- Previous research suggests perceived duration of auditory and visual intervals differs when directly compared.
- This difference may stem from a 'memory-mixing' process, where prior interval memory influences subsequent perceptions.
- The lifespan of temporal representations in memory is key to understanding time judgments.
Purpose of the Study:
- To investigate how memory influences time judgments.
- To explore the lifespan of temporal representations in memory.
- To manipulate auditory/visual signal presentation modes to test the memory-mixing hypothesis.
Main Methods:
- Experiment 1: Grouped auditory/visual signals by blocks versus randomized presentation.
- Experiment 2: Employed a line-segmentation task to assess cross-modal temporal distortion after training.
- Manipulated the mixing mode of auditory/visual signal presentations.
Main Results:
- In Experiment 1, grouping signals by modality reduced but did not eliminate the auditory/visual difference in perceived duration.
- In Experiment 2, training in one modality distorted perceived duration in the other modality for at least 30 trials.
- The magnitude of temporal distortion decreased as the block progressed.
Conclusions:
- Memory significantly influences time judgments, supporting the 'memory-mixing' process.
- Temporal representations in memory have a lasting impact on perception.
- Empirical evidence and quantitative data support the role of memory-mixing in time perception.
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