Relationship between dim light melatonin onset and the timing of sleep in sleep onset insomniacs

Helen Wright, Leon Lack, Richard R Bootzin

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Dim light melatonin onset (DLMO), a phase marker of the circadian system can be estimated from sleep diaries of good sleepers. Previous studies have shown a strong relationship between DLMO and midpoint of sleep and wake-up time. The present study investigated these same relationships in a group of sleep onset insomniacs. The correlations between DLMO and sleep onset time, sleep midpoint and wake-up time were significant but only moderate at r = 0.43, 0.48 and 0.42, respectively. Further, when the group was divided into insomniacs with late and early DLMO the correlations for the early group were no longer significant. Caution should be exercised when predicting DLMO from the sleep times of insomniacs.

Original languageEnglish (US)
Pages (from-to)78-80
Number of pages3
JournalSleep and Biological Rhythms
Volume4
Issue number1
DOIs
StatePublished - Feb 2006

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melatonin
Melatonin
sleep
Sleep
Light

Keywords

  • DLMO
  • Melatonin
  • Sleep timing

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Neurology
  • Physiology

Cite this

Relationship between dim light melatonin onset and the timing of sleep in sleep onset insomniacs. / Wright, Helen; Lack, Leon; Bootzin, Richard R.

In: Sleep and Biological Rhythms, Vol. 4, No. 1, 02.2006, p. 78-80.

Research output: Contribution to journalArticle

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