نتایج جستجو برای: chronotype
تعداد نتایج: 631 فیلتر نتایج به سال:
The authors investigated associations between smartphone use and chronotype. To 196 medical university students, they administered a set of self-reporting questionnaires designed to evaluate smartphone use and chronotype. Respondents were categorized into morning types and evening types: for females, the evening types scored higher for smartphone dependence; the authors also found greater durat...
The study of circadian typology differences has increased in the last few years. As a result, new instruments have been developed to estimate the individual circadian phase of temporal human behavior, also referred as chronotype. The current review was conducted to evaluate the differences among the questionnaires most frequently used to assess chronotype: the Morningness-Eveningness Questionna...
Disrupted circadian rhythms and reduced sleep duration are associated with several human diseases, particularly obesity and type 2 diabetes, but until recently, little was known about the genetic factors influencing these heritable traits. We performed genome-wide association studies of self-reported chronotype (morning/evening person) and self-reported sleep duration in 128,266 white British i...
OBJECTIVE Based on individual daily physiological cycles, humans can be classified as early (EC), late (LC) and intermediate (IC) chronotypes. Recent studies have verified that chronotype-specificity relates to performance on cognitive tasks: participants perform more efficiently when tested in the chronotype-specific optimal time of day than when tested in their non-optimal time. Surprisingly,...
Humans come in different chronotypes and, particularly, the late chronotype (the so-called owl) has been shown to be associated with several health risks. A number of studies show that laboratory mice also display various chronotypes. In mice as well as in humans, the chronotype shows correlations with the period length and rhythm stability. In addition, some mouse models for human diseases sho...
Humans show large inter-individual differences in organising their behaviour within the 24-h day-this is most obvious in their preferred timing of sleep and wakefulness. Sleep and wake times show a near-Gaussian distribution in a given population, with extreme early types waking up when extreme late types fall asleep. This distribution is predominantly based on differences in an individuals' ci...
Article history: Received 15 January 2014 Received in revised form 15 July 2014 Accepted 2 September 2014 Available online xxxx Individuals with a propensity to wake up early in the morning (“early-morning” types) and those who like to stay up late at night (“night owls”) often exhibit distinctive psychological and physiological profiles. Previous research has shown that night owls score higher...
Background: The identification of differences in seasonality and chronotype may provide useful information regarding unipolar mania as a distinct entity. Therefore, the present study was planned to compare seasonality and chronotype in patients with unipolar mania and bipolar disorder. Method: A cross-sectional study included 60 euthymic outpatients, 30 affected by bipolar affective disorder (b...
The study of circadian typology differences has increased in the last few years. As a result, new instruments have been developed to estimate the individual circadian phase of temporal human behavior, also referred as chronotype. The current review was conducted to evaluate the differences among the questionnaires most frequently used to assess chronotype: the MorningnessEveningness Questionnai...
Objective: Chronotype refers to the time of the day that a person’s physical and cognitive functions are active. Simply this is a circadian phase preference of a person. While some of the people are morning active (so called larks ) others are more active at nights (The owls). The study of circadian rhythms, known as chronobiology, is all about the metabolic and psychiatric differences between ...
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