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No Associations between Interindividual Differences in Sleep Parameters and Episodic Memory Consolidation

Ackermann, Sandra and Hartmann, Francina and Papassotiropoulos, Andreas and de Quervain, Dominique J.-F. and Rasch, Björn. (2015) No Associations between Interindividual Differences in Sleep Parameters and Episodic Memory Consolidation. Sleep, 38 (6). pp. 951-959D.

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Official URL: http://edoc.unibas.ch/40794/

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Abstract

Sleep and memory are stable and heritable traits that strongly differ between individuals. Sleep benefits memory consolidation, and the amount of slow wave sleep, sleep spindles, and rapid eye movement sleep have been repeatedly identified as reliable predictors for the amount of declarative and/or emotional memories retrieved after a consolidation period filled with sleep. These studies typically encompass small sample sizes, increasing the probability of overestimating the real association strength. In a large sample we tested whether individual differences in sleep are predictive for individual differences in memory for emotional and neutral pictures.; Between-subject design.; Cognitive testing took place at the University of Basel, Switzerland. Sleep was recorded at participants' homes, using portable electroencephalograph-recording devices.; Nine hundred-twenty-nine healthy young participants (mean age 22.48 ± 3.60 y standard deviation).; None.; In striking contrast to our expectations as well as numerous previous findings, we did not find any significant correlations between sleep and memory consolidation for pictorial stimuli.; Our results indicate that individual differences in sleep are much less predictive for pictorial memory processes than previously assumed and suggest that previous studies using small sample sizes might have overestimated the association strength between sleep stage duration and pictorial memory performance. Future studies need to determine whether intraindividual differences rather than interindividual differences in sleep stage duration might be more predictive for the consolidation of emotional and neutral pictures during sleep.
Faculties and Departments:03 Faculty of Medicine > Bereich Psychiatrie (Klinik) > Erwachsenenpsychiatrie UPK > Molekulare Neurowissenschaften (Papassotiropoulos)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Psychiatrie (Klinik) > Erwachsenenpsychiatrie UPK > Molekulare Neurowissenschaften (Papassotiropoulos)
05 Faculty of Science > Departement Biozentrum > Services Biozentrum > Life Sciences Training Facility (Papassotiropoulos)
07 Faculty of Psychology > Departement Psychologie > Forschungsbereich Klinische Psychologie und Neurowissenschaften > Molecular Psychology (Papassotiropoulos)
UniBasel Contributors:de Quervain, Dominique J.-F. and Papassotiropoulos, Andreas
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Academy of Sleep Medicine and the Sleep Research Society
ISSN:1550-9109
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:25 Jun 2018 15:51
Deposited On:02 Feb 2016 13:10

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