Association of actigraphy-derived circadian phase indicators with the nadir of spindle frequency

The measurement of chronotype and circadian rhythms in polysomnography (PSG) studies is unresolved as no validated PSG markers have been published before. Data suggest that overnight changes in sleep spindle frequency (SSF) are due to a time-of-day effect, the nadir reflecting the middle of the biol...

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Vydáno v:Biological rhythm research Ročník 55; číslo 1; s. 16 - 29
Hlavní autoři: G. Horváth, Csenge, Bódizs, Róbert
Médium: Journal Article
Jazyk:angličtina
Vydáno: Abingdon Taylor & Francis Ltd 02.01.2024
Témata:
Activity patterns
circadian rhythm
Circadian rhythms
questionnaires
Sleep
young adults
ISSN:0929-1016, 1744-4179, 1744-4179
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Shrnutí:The measurement of chronotype and circadian rhythms in polysomnography (PSG) studies is unresolved as no validated PSG markers have been published before. Data suggest that overnight changes in sleep spindle frequency (SSF) are due to a time-of-day effect, the nadir reflecting the middle of the biological night. In this study, we tested the nadir of sleep spindle frequency (NSSF) as a phase angle estimate of the circadian rhythm. The associations between NSSF, Munich Chronotype Questionnaire (MCTQ) and actigraphy-derived sleep midpoints were analysed in a healthy young adult sample (N = 31; 16 females). MCTQ sleep midpoints on workdays, furthermore all actigraphy-derived sleep midpoint metrics and the least active 5 hours were consistent with the individual differences in NSSF, highlighting the potential use of NSSF as a chronotype indicator. Although further validation is needed, these results could open new horizons in the role of PSG recordings in circadian rhythm research
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ISSN:0929-1016
1744-4179
1744-4179
DOI:10.1080/09291016.2023.2283656