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0103 The Impact of Midday Napping on Individual Working Memory: Mediating Effects of Positive Affect Memory

Sleep (New York, N.Y.), 2018-04, Vol.41 (suppl_1), p.A41-A41 [Peer Reviewed Journal]

Sleep Research Society 2018. Published by Oxford University Press [on behalf of the Sleep Research Society]. All rights reserved. For permissions, please email: journals.permissions@oup.com 2018 ;Copyright © 2018 Sleep Research Society ;ISSN: 0161-8105 ;EISSN: 1550-9109 ;DOI: 10.1093/sleep/zsy061.102

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  • Title:
    0103 The Impact of Midday Napping on Individual Working Memory: Mediating Effects of Positive Affect Memory
  • Author: Zhou, J ; Fan, F ; Ma, N
  • Subjects: Affect (Psychology)
  • Is Part Of: Sleep (New York, N.Y.), 2018-04, Vol.41 (suppl_1), p.A41-A41
  • Description: Abstract Introduction Midday napping is a common behavior among Chinese population. Previous studies have shown that a brief midday napping could impact individual working memory and positive affect. Midday napping might improve individual working memory through the change of positive affect. Our study examined the impact of midday napping on individual working memory and further investigate whether the positive affect mediates the relationship between midday napping and working memory. Methods 63 college students (31 men; mean age ± SD: 19.92 ± 1.60) participated in this study, randomized into two groups, Nap-group and Wake-group. Nap-group (n=32) were allowed to have a 35-minute midday nap and extra 10 minutes sitting quietly to buffer against sleep inertia, while Wake-group (n=31) stayed 45-minute awake by reading neutral written materials between the two sessions. Other conditions remain identical. PASAT(Paced Auditory Serial Addition Test)and PANAS (Positive and Negative Affect Schedule) were used to evaluate individual working memory and positive affect respectively. Age and gender finally reckoned as controlled variables. Results Repeated measurement analysis of variance showed that the main effects of time reached a significant level (η2=0.092). Moreover, there was a significant interaction between time and group in working memory (η2=0.276). Further simple effect analysis found that the accuracy of PASAT significantly improved after a brief midday nap, p<0.001, but there was no remarkable change in wake group, p=0.069. Finally, we used Bootstrap method to detect mediation effects, there was a significant indirect effect of midday napping on working memory through positive affect could be measured. The indirect effects were 0.020, BootSE=0.008. The 95 % bootstrap confidence interval for the indirect effects did not include 0 (95 % CI: [0.008, 0.038]). Conclusion Our study supports that post-lunch nap can promote working memory, and positive affect play a mediating role in the relationship between midday napping and working memory. Support (If Any) National Natural Science Foundation of China 31500906, 31671165.
  • Publisher: US: Oxford University Press
  • Language: English
  • Identifier: ISSN: 0161-8105
    EISSN: 1550-9109
    DOI: 10.1093/sleep/zsy061.102
  • Source: ProQuest One Psychology
    Alma/SFX Local Collection
    ProQuest Central
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