Abstract:
:Sleep-wake regulation involves reciprocal interactions between sleep- and wake-promoting processes that inhibit one another. To uncover the signatures of the opponent processes underlying ultradian sleep cycles, principal component analysis was performed on the sets of 16 single-Hz log-transformed electroencephalographic (EEG) power densities (1-16 Hz frequency range). Data were collected during unrestricted night sleep followed by 9 20-min naps (14 women aged 17-55 yrs) and during 12 20-min naps after either restriction or deprivation of sleep (9 males and 9 males, respectively, aged 18-22 yrs). It was found that any subset of power spectra could be reduced to the invariant four-principal component structure. The time courses of scores on these four components might be interpreted as the spectral EEG markers of the kinetics of two pairs of opponent chronoregulatory processes. In a sequence of ultradian sleep cycles, the 1st and 2nd components represent the alternations between competing drives for sleep and wakefulness, respectively, whereas the 3rd and 4th components reflect the alternations between light and deep sleep, respectively. The results suggest that principal component structuring of EEG spectrum can be employed for derivation of the parameters of the quantitative models conceptualizing the three major aspects of sleep-wake regulation—homeostatic, circadian, and ultradian processes.
journal_name
Chronobiol Intjournal_title
Chronobiology internationalauthors
Putilov AAdoi
10.3109/07420528.2011.565136subject
Has Abstractpub_date
2011-05-01 00:00:00pages
287-99issue
4eissn
0742-0528issn
1525-6073journal_volume
28pub_type
杂志文章abstract::Fourteen healthy subjects have been studied in an isolation unit while living on a 30h "day" (20h awake, 10h asleep) for 14 (solar) days but while aware of real time. Waking activities were sedentary and included reading, watching television, and so forth. Throughout, regular recordings of rectal temperature were made...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420529609020906
更新日期:1996-10-01 00:00:00
abstract::The objectives of the study were to investigate the associations between night work and disability pension (DP) due to all causes, cardiovascular (CVD), mental, and other diagnoses, adjusting for familial confounding. The material of the study included comprehensive survey data on 27 165 Swedish twins born in 1935-195...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420528.2017.1399137
更新日期:2018-02-01 00:00:00
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journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420528.2020.1800028
更新日期:2020-12-01 00:00:00
abstract::Circadian rhythms are still expressed in animals that display daily torpor, implying a temperature compensation of the pacemaker. Nevertheless, it remains unclear how the clock works in hypothermic states and whether torpor itself, as a temperature pulse, affects the circadian system. To reveal changes in the clockwor...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420520500522424
更新日期:2006-01-01 00:00:00
abstract::Due to personal and working necessities, the time for exercise is often short, and scheduled early in the morning or late in the afternoon. Cortisol plays a central role in the physiological and behavioral response to a physical challenge and can be considered as an index of exercise stress. Therefore, the aim of this...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420528.2017.1311336
更新日期:2017-01-01 00:00:00
abstract::The 3111T/C single nucleotide polymorphism (SNP) of Circadian Locomotor Output Cycles Kaput (CLOCK) gene reportedly affects gastric motility before breakfast. It is of interest to know whether this SNP can affect the motility during the daytime. We investigated the association between the CLOCK 3111T/C SNP and several...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420528.2017.1373660
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journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420528.2012.728548
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journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420528.2012.741173
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journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420528.2019.1617732
更新日期:2019-08-01 00:00:00
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journal_title:Chronobiology international
pub_type: 杂志文章
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更新日期:2008-09-01 00:00:00
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journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420520500395011
更新日期:2005-01-01 00:00:00
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journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420528.2012.741169
更新日期:2013-05-01 00:00:00
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journal_title:Chronobiology international
pub_type: 传,历史文章,杂志文章
doi:10.1081/cbi-100103184
更新日期:2001-03-01 00:00:00
abstract::A diary-based instrument-the Social Rhythm Metric (SRM)-was used to assess the level of stability of daily social and behavioral rhythms in a group of 239 healthy subjects (112 male, 127 female) ranging in age from 20 to 89 years. Each subject completed the instrument for two consecutive weeks, which were averaged to ...
journal_title:Chronobiology international
pub_type: 杂志文章
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journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420528.2013.877921
更新日期:2014-05-01 00:00:00
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journal_title:Chronobiology international
pub_type: 杂志文章
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journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420528.2014.897711
更新日期:2014-06-01 00:00:00
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journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420528.2013.842575
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journal_title:Chronobiology international
pub_type: 杂志文章
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journal_title:Chronobiology international
pub_type: 杂志文章
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journal_title:Chronobiology international
pub_type: 杂志文章
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journal_title:Chronobiology international
pub_type: 杂志文章
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journal_title:Chronobiology international
pub_type: 杂志文章
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abstract::Melatonin, an essential pineal hormone, acts as a marker of the circadian clock that regulates biological rhythms in animals. The effects of exogenous melatonin on the circadian system of nocturnal rodents have been extensively studied; however, there is a paucity of studies on the phase-resetting characteristics of m...
journal_title:Chronobiology international
pub_type: 杂志文章
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更新日期:2020-05-01 00:00:00
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journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1081/cbi-100107968
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journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420520903398583
更新日期:2010-01-01 00:00:00
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journal_title:Chronobiology international
pub_type: 杂志文章
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journal_title:Chronobiology international
pub_type: 杂志文章
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更新日期:1999-05-01 00:00:00
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journal_title:Chronobiology international
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Chronobiology international
pub_type: 杂志文章,评审
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更新日期:2008-04-01 00:00:00