Digital Daily Cycles of Individuals

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2015
Department
Department of Computer Science
Major/Subject
Mcode
Degree programme
Language
en
Pages
7
1-7
Series
FRONTIERS IN PHYSICS, Volume 3
Abstract
Humans, like almost all animals, are phase-locked to the diurnal cycle. Most of us sleep at night and are active through the day. Because we have evolved to function with this cycle, the circadian rhythm is deeply ingrained and even detectable at the biochemical level. However, within the broader day-night pattern, there are individual differences: e.g., some of us are intrinsically morning-active, while others prefer evenings. In this article, we look at digital daily cycles: circadian patterns of activity viewed through the lens of auto-recorded data of communication and online activity. We begin at the aggregate level, discuss earlier results, and illustrate differences between population-level daily rhythms in different media. Then we move on to the individual level, and show that there is a strong individual-level variation beyond averages: individuals typically have their distinctive daily pattern that persists in time. We conclude by discussing the driving forces behind these signature daily patterns, from personal traits (morningness/eveningness) to variation in activity level and external constraints, and outline possibilities for future research.
Description
VK: Saramäki, J.; Triton
Keywords
circadian rhythms, digital phenotyping, electronic communication records, individual differences, mobile phones
Other note
Citation
Aledavood , T , Lehmann , S & Saramäki , J 2015 , ' Digital Daily Cycles of Individuals ' , Frontiers in Physics , vol. 3 , 73 , pp. 1-7 . https://doi.org/10.3389/fphy.2015.00073