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Comparison of the Munich Chronotype Questionnaire with the Horne‐Östberg's Morningness‐Eveningness score
TLDR
The study shows that chronotype (based on MSF as measured by the MCTQ) strongly correlates with morningness‐eveningness (as measured with the MEQ), however, the M CTQ collects additional detailed information on sleep‐wake behavior under natural conditions. Expand
Seasonal affective disorder and latitude: a review of the literature.
TLDR
The influence of latitude on prevalence seems to be small and other factors like climate, genetic vulnerability and social-cultural context can be expected to play a more important role. Expand
Time-of-day-dependent effects of bright light exposure on human psychophysiology: comparison of daytime and nighttime exposure.
TLDR
The effect of bright light given at two different times of day on psychological and physiological parameters was time independent, since nighttime and daytime bright light reduced sleepiness and fatigue significantly and similarly. Expand
All night spectral analysis of EEG sleep in young adult and middle-aged male subjects
TLDR
It is concluded that the age-related differences in human sleep EEG power spectra are not identical to the changes in EEGPower spectra observed in the course of the sleep episode and cannot be completely explained by assuming a reduced need for sleep in older subjects. Expand
Subjective sleepiness correlates negatively with global alpha (8–12 Hz) and positively with central frontal theta (4–8 Hz) frequencies in the human resting awake electroencephalogram
TLDR
The notion that sleepiness is directly represented in the awake EEG is supported, with strong negative correlations of alpha (8-12 Hz) power with subjective sleepiness at all scalp locations, suggesting a negative association between sleepiness and general cortical activation. Expand
The reliability and validity of the Seasonal Pattern Assessment Questionnaire: a comparison between patient groups.
TLDR
The SPAQ is not sensitive enough to be considered a diagnostic instrument for SAD, Nevertheless, it is accurateenough to be used as a screenings instrument. Expand
Sex differences in the sleep EEG of young adults: visual scoring and spectral analysis.
TLDR
Analysis of baseline sleep of 13 men and 15 women and published data on the effects of sleep deprivation on EEG power spectra did not suggest a common mechanism underlying sleep deprivation effects and the sex difference in sleep EEGs, but it was concluded that sex differences in EEG powerSpectral analysis detected significantly higher power densities during non-REM sleep over a wide frequency range in the female versus male subjects. Expand
Effects of seganserin, a 5-HT2 antagonist, and temazepam on human sleep stages and EEG power spectra.
TLDR
It is concluded that the 5HT2 antagonist, seganserin, can induce slow wave sleep (SWS), but since the spectral results showed that the changes in the sleep EEG were not identical to those induced by sleep deprivation it seems premature to conclude that 5 HT2 receptors are primarily involved in NREM sleep regulation. Expand
The prevalence of seasonal affective disorder in the netherlands: a prospective and retrospective study of seasonal mood variation in the general population
TLDR
SAD subjects were significantly more often unemployed or on sick leave than other subjects, in both winter and summer, and responded to winter SAD criteria significantly more depressed than healthy subjects. Expand
Circadian control of the sleep–wake cycle
TLDR
In spite of this rapid increase in knowledge of the circadian clock and of sleep regulatory processes, much remains to be discovered concerning the precise interaction between the biological clock and sleep timing. Expand
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