scholarly journals The effect of dream report collection and dream incorporation on memory consolidation during sleep

2019 ◽  
Vol 28 (1) ◽  
Author(s):  
Sarah F. Schoch ◽  
Maren J. Cordi ◽  
Michael Schredl ◽  
Björn Rasch

2018 ◽  
Author(s):  
Sarah F. Schoch ◽  
Maren J. Cordi ◽  
Michael Schredl ◽  
Bjöern Rasch

AbstractWaking up during the night to collect dream reports is a commonly used method to study dreams. This method has also been applied in studies on the relationship between dreams and memory consolidation. However, it is unclear if these awakenings influence ongoing memory consolidation processes. Furthermore, only few studies have examined if task incorporation into dreams is related to enhanced performance in the task. Here we compare memory performance in a word-picture association learning task after a night with (up to six awakenings) and without awakenings in 22 young and healthy participants. We then examine if the task is successfully incorporated into the dreams and if this incorporation is related to the task performance the next morning. We show that while the awakenings impair both subjective and objective sleep quality, these awakenings did not impair ongoing memory consolidation during sleep. When dreams were collected during the night by awakenings, memories of the learning task were successfully incorporated into dreams. No incorporation occurred in dreams collected only in the morning. Task incorporation into NREM sleep dreams, but not REM sleep dreams showed a relationship with task performance the next morning.We conclude that the method of awakenings to collect dream reports is suitable for dream and memory studies, and is even crucial to uncover task incorporations. Furthermore, our study suggests that dreams in NREM rather than REM sleep might be related to processes of memory consolidation during sleep.



2000 ◽  
Vol 23 (6) ◽  
pp. 1001-1003 ◽  
Author(s):  
Michael Schredl

All five target articles are of high quality and very stimulating for the field. Several factors such as dream report length and NREM/REM differences, may be affected by the waking process (transition from sleep to wakefulness) and the recall process. It is helpful to distinguish between a model for REM sleep regulation and a physiological model for dreaming. A third model accounting for cognitive activity (thought-like dreaming) can also be of value. The postulated adaptive function of dreaming in avoidance learning does not seem very plausible because the two major basic assumptions (specificity of dream content and benefit of negative dreams) are not clearly supported by modern dream research: The critique of studies investigating memory consolidation in REM sleep is justified. Future studies integrating the knowledge of memory processes and sleep research will shed more light on the role of sleep, especially REM sleep in memory consolidation.[Hobson et al.; Nielsen; Revonsuo; Solms; Vertes & Eastman]



2015 ◽  
Vol 74 (2) ◽  
pp. 91-104 ◽  
Author(s):  
Bo Wang

Emotional arousal induced after learning has been shown to modulate memory consolidation. However, it is unclear whether the effect of postlearning arousal can extend to different aspects of memory. This study examined the effect of postlearning positive arousal on both item memory and source memory. Participants learned a list of neutral words and took an immediate memory test. Then they watched a positive or a neutral videoclip and took delayed memory tests after either 25 minutes or 1 week had elapsed after the learning phase. In both delay conditions, positive arousal enhanced consolidation of item memory as measured by overall recognition. Furthermore, positive arousal enhanced consolidation of familiarity but not recollection. However, positive arousal appeared to have no effect on consolidation of source memory. These findings have implications for building theoretical models of the effect of emotional arousal on consolidation of episodic memory and for applying postlearning emotional arousal as a technique of memory intervention.



2011 ◽  
Author(s):  
G. Deliens ◽  
R. Schmitz ◽  
A. Mary ◽  
P. Peigneux


2013 ◽  
Author(s):  
Jane C. Komsky ◽  
Colleen M. Kelley
Keyword(s):  


2013 ◽  
Author(s):  
Jelena Mirkovic ◽  
Gareth Gaskell
Keyword(s):  


2020 ◽  
Author(s):  
Martina Hedenius ◽  
Jarrad A. G. Lum ◽  
Sven Bölte


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