Delta and theta power spectra of night sleep EEG are higher in breast-feeding mothers than in non-pregnant women

Kyoko Nishihara, Shigeko Horiuchi, Hiromi Eto, Sunao Uchida, Makoto Honda

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    The power spectra of night sleep EEGs of 12 breast-feeding 9-13 week postpartum mothers were analyzed and compared with those of 12 non-pregnant women. The power spectra in the delta and theta frequency range during NREM sleep for breast-feeding mothers were significantly higher than those for non-pregnant women. In addition, the all-night sleep patterns of the mothers were classified into two groups - interrupted sleep due to taking care of their infants and non-interrupted sleep - in order to observe the influence of partial sleep deprivation. The power spectra in the delta and theta frequency range were not significantly different between them. This result suggests that increased delta and theta power spectra during postpartum sleep do not result from partial sleep deprivation. The role of prolactin in breast-feeding mothers' sleep is also discussed.

    Original languageEnglish
    Pages (from-to)216-220
    Number of pages5
    JournalNeuroscience Letters
    Volume368
    Issue number2
    DOIs
    Publication statusPublished - 2004 Sep 23

    Keywords

    • Breast-feeding
    • Delta power spectra
    • Partial sleep deprivation
    • Primipara
    • Prolactin
    • Theta power spectra

    ASJC Scopus subject areas

    • Neuroscience(all)

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