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14.04.2023 | Basic Science • Original Article

Positive effects of napping on memory consolidation and resistance against interference

verfasst von: Yajing Wang, Yao Meng, Ruike Zhang, Jing Du, Yujia Huang, Siqi Zheng, Shuyu Xu, Lei Xiao, Jingzhou Xu, Hao Wang, Tong Su, Yunxiang Tang

Erschienen in: Sleep and Breathing | Ausgabe 6/2023

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Abstract

Purpose

This study explored the relationship between naps and memory among habitual nappers in China.

Methods

Medical college students participated and were divided into 30-min, 60-min, and 90-min time-in-bed groups. To evaluate declarative and procedural memory performance, A–B and A–C interfering word pair and interfering finger tapping tasks were employed.

Results

Among 60 students, a significant decrease in the correct recall rate in the declarative task after having a nap was found only in the 30-min group (p = 0.005). After learning interference (A-C word pairs), the correct recall rate for the declarative task decreased significantly in all interference tests (ps < 0.001). In the procedural task, the speed of sequence A in the retests increased after having a nap in all three groups (ps < 0.048), with a significant decrease in accuracy only in the 30-min group (p = 0.042). After learning interference (sequence B) in the procedural task, the speed of sequence A increased in the 60-min group after 1 h (p = 0.049), and both the 60-min and 90-min groups showed increased speed after one night (ps < 0.022). No significant improvement in speed was found in the 30-min group (ps > 0.05), and this group showed the lowest accuracy for sequence A (ps < 0.16).

Conclusion

A habitual nap time-in-bed of 60 or 90 min had better effects on declarative and procedural memory consolidation and better memory resistance against interference in procedural memory.

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Titel: Positive effects of napping on memory consolidation and resistance against interference
verfasst von: Yajing Wang
Yao Meng
Ruike Zhang
Jing Du
Yujia Huang
Siqi Zheng
Shuyu Xu
Lei Xiao
Jingzhou Xu
Hao Wang
Tong Su
Yunxiang Tang
Publikationsdatum: 14.04.2023
Verlag: Springer International Publishing
Erschienen in: Sleep and Breathing / Ausgabe 6/2023
Print ISSN: 1520-9512
Elektronische ISSN: 1522-1709
DOI: https://doi.org/10.1007/s11325-023-02822-3

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Positive effects of napping on memory consolidation and resistance against interference