Procedural memory consolidation is associated with heart rate variability and sleep spindles.

Autor: van Schalkwijk FJ; Laboratory for Sleep, Cognition and Consciousness Research, Centre for Cognitive Neuroscience (CCNS), University of Salzburg, Salzburg, Austria., Hauser T; Laboratory for Sleep, Cognition and Consciousness Research, Centre for Cognitive Neuroscience (CCNS), University of Salzburg, Salzburg, Austria., Hoedlmoser K; Laboratory for Sleep, Cognition and Consciousness Research, Centre for Cognitive Neuroscience (CCNS), University of Salzburg, Salzburg, Austria., Ameen MS; Laboratory for Sleep, Cognition and Consciousness Research, Centre for Cognitive Neuroscience (CCNS), University of Salzburg, Salzburg, Austria., Wilhelm FH; Clinical Stress and Emotion Laboratory, Division of Clinical Psychology, Psychotherapy and Health Psychology, Department of Psychology, University of Salzburg, Salzburg, Austria., Sauter C; Department of Neurology, Medical University of Vienna, Vienna, Austria.; Competence Center of Sleep Medicine, Charité - University Medicine, Berlin, Germany., Klösch G; Department of Neurology, Medical University of Vienna, Vienna, Austria., Moser D; Department of Neurology, Medical University of Vienna, Vienna, Austria., Gruber G; Department of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria., Anderer P; Department of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria., Saletu B; Department of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria., Parapatics S; Department of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria., Zeitlhofer J; Department of Neurology, Medical University of Vienna, Vienna, Austria., Schabus M; Laboratory for Sleep, Cognition and Consciousness Research, Centre for Cognitive Neuroscience (CCNS), University of Salzburg, Salzburg, Austria.
Jazyk: angličtina
Zdroj: Journal of sleep research [J Sleep Res] 2020 Jun; Vol. 29 (3), pp. e12910. Date of Electronic Publication: 2019 Aug 27.
DOI: 10.1111/jsr.12910
Abstrakt: Sleep and memory studies often focus on overnight rather than long-term memory changes, traditionally associating overnight memory change (OMC) with sleep architecture and sleep patterns such as spindles. In addition, (para-)sympathetic innervation has been associated with OMC after a daytime nap using heart rate variability (HRV). In this study we investigated overnight and long-term performance changes for procedural memory and evaluated associations with sleep architecture, spindle activity (SpA) and HRV measures (R-R interval [RRI], standard deviation of R-R intervals [SDNN], as well as spectral power for low [LF] and high frequencies [HF]). All participants (N = 20, M age  = 23.40 ± 2.78 years) were trained on a mirror-tracing task and completed a control (normal vision) and learning (mirrored vision) condition. Performance was evaluated after training (R1), after a full-night sleep (R2) and 7 days thereafter (R3). Overnight changes (R2-R1) indicated significantly higher accuracy after sleep, whereas a significant long-term (R3-R2) improvement was only observed for tracing speed. Sleep architecture measures were not associated with OMC after correcting for multiple comparisons. However, individual SpA change from the control to the learning night indicated that only "SpA enhancers" exhibited overnight improvements for accuracy and long-term improvements for speed. HRV analyses revealed that lower SDNN and LF power was associated with better OMC for the procedural speed measure. Altogether, this study indicates that overnight improvement for procedural memory is specific for spindle enhancers, and is associated with HRV during sleep following procedural learning.
(© 2019 The Authors. Journal of Sleep Research published by John Wiley & Sons Ltd on behalf of European Sleep Research Society.)
Databáze: MEDLINE
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