The influence of encoding strategy on associative memory consolidation across wake and sleep
Dan Denis1, Ryan Bottary2, Tony J Cunningham3,4
1Department of Psychology, University of York, York YO10 5DD, United Kingdom dan.denis@york.ac.uk.
Learning & Memory (Cold Spring Harbor, N.Y.)
|September 19, 2023
Summary
Encoding strategy significantly impacts memory. Integrative visualization enhances immediate recall and reduces forgetting during sleep, unlike nonintegrative methods, highlighting encoding
Area of Science:
- Cognitive Psychology
- Neuroscience
- Memory Research
Background:
- Sleep is known to benefit memory consolidation.
- Encoding strategies employed during initial learning may influence how effectively memories are consolidated.
Purpose of the Study:
- To investigate the moderating role of encoding strategy on memory consolidation during sleep.
- To compare the effects of integrative visualization versus nonintegrative visualization on memory retention and consolidation.
Main Methods:
- Eighty-nine participants encoded word pairs using either an integrative visualization technique or a nonintegrative visualization technique.
- Memory recall was assessed before and after a period of nocturnal sleep or daytime wakefulness.
- Cued recall tests were used to measure memory performance.
Main Results:
- Immediate memory performance was significantly higher for word pairs encoded with the integrative strategy.
- Integrated word pairs showed significantly less forgetting across a night of sleep compared to a day of wakefulness.
- Nonintegrated word pairs did not show a significant difference in forgetting between sleep and wake conditions.
Conclusions:
- The encoding strategy significantly influences both immediate memory retention and subsequent consolidation.
- Integrative visualization enhances memory consolidation during sleep, protecting against forgetting more effectively than nonintegrative strategies.
- Encoding strategy is a critical factor in memory consolidation, with implications for understanding memory formation and preservation.
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