Existing evidence suggests an association between mood, time-of-day and morningness-eveningness (M-E). Since few studies have been carried out among adolescents, in this study daily mood fluctuations were analyzed in the naturalistic school context during 2 d in order to test how chronotype and time-of-day are related to mood during the school schedule period and check if sleep length is involv...

OBJECTIVES To estimate the prevalence of daytime sleepiness and circadian preferences, and to examine the extent to which caffeine consumption and Khat (a herbal stimulant) use are associated with daytime sleepiness and evening chronotype among Ethiopian college students. METHODS A cross-sectional study was conducted among 2,410 college students. A self-administered questionnaire was used to ...

Learning styles, cerebral dominance and chronotypes are among the factors that have been determined to be effective on individuals’ learning. It is stated in literature these three variables interrelated or affect each other. Therefore, aim of study determine extent which students’ predicts their learning styles whether an effect this level prediction as a moderating variable. In research, “Mor...

The mammalian circadian system is composed of a light-entrainable central clock in the suprachiasmatic nuclei (SCN) of the brain and peripheral clocks in virtually any other tissue. It allows the organism to optimally adjust metabolic, physiological and behavioral functions to the physiological needs it will have at specific time of the day. According to the resonance theory, such rhythms are o...

Morningness-eveningness has been associated with the entrained circadian phase. However, we recently identified morning and evening types having similar circadian phases. In this paper, we compared parameters of slow-wave activity (SWA) decay in non-rapid-eye-movement (NREM) sleep between these two subgroups to test the hypothesis that differences in the dynamics of nocturnal homeostatic sleep ...

Objectives: The aim of this study is to evaluate the possible relationship between presence/absence self-reported sleep and/or awake bruxism and chronotype profiles dental students. Materials Methods: students at Istanbul Medipol University Medeniyet in fall semester 2020-2021 academic year participated study. Along with demographic data, an 11-item questionnaire evaluating quality bruxism, a 1...

BACKGROUND Circadian rhythms play an integral role in human behavior, physiology and health. Individual differences in daily rhythms (chronotypes) can affect individual sleep-wake cycles, activity patterns and behavioral choices. Diurnal preference, the tendency towards morningness or eveningness among individuals, has been associated with interpersonal variation in circadian clock-related outp...

Objectives This is the first general population study to evaluate whether evening chronotypes (E) have poorer work ability (WA) and higher probability for early disability pensions (DPs) than morning types (M) in middle age. Methods Among non-retired individuals (n=5831; 2672 men, 3159 women) of Northern Finland Birth Cohort 1966, chronotype was determined at age 46 years with shortened Morning...

Introduction Several studies investigated the role of inflammation in etiopathogenesis psychiatric disorders, by also evaluating how CRP may exert a pathoplastic and/or psychopatological mood disorders. Objectives The aim our cross-sectional study is high-sensitivity C-reactive-protein (hsCRP) levels cohort unipolar and bipolar depressive inpatients, relation with psychopathological, temperamen...