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Results: 113
Number of items: 113
  • Nagtegaal, J. E., Peeters, A. B. H., Swart, A. C. W., Smits, M. G., Kerkhof, G. A., & van der Meer, Y. G. (1998). Correlation between concentrations of melatonin in saliva and serum in patients with delayed sleep phase syndrome. Therapeutic Drug Monitoring, 20, 181-183. https://doi.org/10.1097/00007691-199804000-00008
  • Nagtegaal, J. E., Smits, M. G., Swart, A. C. W., Kerkhof, G. A., & van der Meer, Y. G. (1998). Melatonin responsive headache in Delayed Sleep Phase Syndrome. Headache, 38, 303-307. https://doi.org/10.1046/j.1526-4610.1998.3804303.x
  • Kramer, C. J. (1998). Alertness and information processing: diurnal fluctuations in healthy elderly. [Thesis, fully internal, Universiteit van Amsterdam]. Faculteit der Psychologie.
  • van Dongen, H. P. A., & Kerkhof, G. A. (1998). Absence of sea-sonal variation in the phase of the endogenous circadian rhythm in humans. Chronobiology International, 15, 623-632. https://doi.org/10.3109/07420529808993198
  • Kerkhof, G. A. (1997). Werken met de biologische klok. Neuropraxis, 1, 4-12.
  • Kramer, C. J., Kerkhof, G. A., & Hofman, W. F. (1997). Variabilite, rythme circadien et comportement someil-eveil chez la personne agee saine. In Troisiemes journees internationales des troubles du sommeil (pp. 121)
  • Kramer, C. J., Hofman, W. F., & Kerkhof, G. A. (1997). Age-effects in the spectral analysis of the MSLT. In D. G. M. Beersma (Ed.), Sleep-Wake research in the Netherlands, Vol 8 (pp. 75-78). Elinkwijk.
  • Nagtegaal, J. E., Kerkhof, G. A., Smits, M. G., Swart, A. C. W., & van der Meer, Y. G. (1997). Delayed sleep phase syndrome: a placebo-controlled cross-over study on the effects of melatonin administered 5 hours before dim light melatonin onset. In D. G. M. Beersma (Ed.), Sleep-Wake research in the Netherlands, Vol 8 (pp. 91-94). Elinkwijk.
  • Kerkhof, G. A. (1997). The 24-hour variation of mood differs between morning-type and evening-type individuals. Perceptual and Motor Skills, 85, 1-3.
  • Kramer, C. J., Kerkhof, G. A., & Hofman, W. F. (1997). Sleep-wake behaviour and circadian rhythmicity in aging. Journal of Sleep Research, 26, 725.
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